xref: /reactos/base/applications/calc/winmain.c (revision 9592728f)
1 /*
2  * ReactOS Calc (main program)
3  *
4  * Copyright 2007-2017, Carlo Bramini
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
19  */
20 
21 #include "calc.h"
22 
23 #define HTMLHELP_PATH(_pt)  _T("%systemroot%\\Help\\calc.chm::") _T(_pt)
24 
25 #define MAKE_BITMASK4(_show_b16, _show_b10, _show_b8, _show_b2) \
26     (((_show_b2)  << 0) | \
27      ((_show_b8)  << 1) | \
28      ((_show_b10) << 2) | \
29      ((_show_b16) << 3))
30 
31 #define MAKE_BITMASK5(_transl, _is_stats, _is_ctrl, _show_b16, _show_b10, _show_b8, _show_b2) \
32     (((_show_b2)  << 0) | \
33      ((_show_b8)  << 1) | \
34      ((_show_b10) << 2) | \
35      ((_show_b16) << 3) | \
36      ((_is_ctrl)  << 5) | \
37      ((_is_stats) << 6) | \
38      ((_transl)   << 7))
39 
40 #define KEY_IS_UP       0x80000000
41 #define KEY_WAS_DOWN    0x40000000
42 
43 #define BITMASK_IS_ASCII    0x80
44 #define BITMASK_IS_STATS    0x40
45 #define BITMASK_IS_CTRL     0x20
46 #define BITMASK_HEX_MASK    0x08
47 #define BITMASK_DEC_MASK    0x04
48 #define BITMASK_OCT_MASK    0x02
49 #define BITMASK_BIN_MASK    0x01
50 
51 #define CALC_CLR_RED        RGB(0xFF, 0x00, 0x00)
52 #define CALC_CLR_BLUE       RGB(0x00, 0x00, 0xFF)
53 #define CALC_CLR_PURP       RGB(0xFF, 0x00, 0xFF)
54 
55 typedef struct {
56     CHAR key; // Virtual key identifier
57     WORD idc; // IDC for posting message
58 } key2code_t;
59 
60 typedef struct {
61     WORD     idc;  // IDC for posting message
62     CHAR     key;  // Virtual key identifier
63     BYTE     mask; // enable/disable into the various modes.
64     COLORREF col;  // color used for drawing the text
65 } key3code_t;
66 
67 #define CTRL_FLAG   0x100
68 #define ALT_FLAG    0x200
69 
70 #define CTRL_A  (0x0001+'A'-'A')
71 #define CTRL_C  (0x0001+'C'-'A')
72 #define CTRL_D  (0x0001+'D'-'A')
73 #define CTRL_L  (0x0001+'L'-'A')
74 #define CTRL_M  (0x0001+'M'-'A')
75 #define CTRL_P  (0x0001+'P'-'A')
76 #define CTRL_R  (0x0001+'R'-'A')
77 #define CTRL_S  (0x0001+'S'-'A')
78 #define CTRL_T  (0x0001+'T'-'A')
79 #define CTRL_V  (0x0001+'V'-'A')
80 #define CTRL_Z  (0x0001+'Z'-'A')
81 
82 static const key3code_t key2code[] = {
83     /* CONTROL-ID          Key                    asc sta ctl hex dec oct bin */
84     { IDC_BUTTON_STA,      CTRL_S,  MAKE_BITMASK5(  1,  0,  1,  1,  1,  1,  1), CALC_CLR_BLUE, },
85     { IDC_BUTTON_AVE,      CTRL_A,  MAKE_BITMASK5(  1,  1,  1,  1,  1,  1,  1), CALC_CLR_BLUE, },
86     { IDC_BUTTON_SUM,      CTRL_T,  MAKE_BITMASK5(  1,  1,  1,  1,  1,  1,  1), CALC_CLR_BLUE, },
87     { IDC_BUTTON_S,        CTRL_D,  MAKE_BITMASK5(  1,  1,  1,  1,  1,  1,  1), CALC_CLR_BLUE, },
88     { IDC_BUTTON_MS,       CTRL_M,  MAKE_BITMASK5(  1,  0,  1,  1,  1,  1,  1), CALC_CLR_RED,  },
89     { IDC_BUTTON_MR,       CTRL_R,  MAKE_BITMASK5(  1,  0,  1,  1,  1,  1,  1), CALC_CLR_RED,  },
90     { IDC_BUTTON_MP,       CTRL_P,  MAKE_BITMASK5(  1,  0,  1,  1,  1,  1,  1), CALC_CLR_RED,  },
91     { IDC_BUTTON_MC,       CTRL_L,  MAKE_BITMASK5(  1,  0,  1,  1,  1,  1,  1), CALC_CLR_RED,  },
92     { IDC_BUTTON_0,        '0',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  1), CALC_CLR_BLUE, },
93     { IDC_BUTTON_1,        '1',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  1), CALC_CLR_BLUE, },
94     { IDC_BUTTON_2,        '2',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  0), CALC_CLR_BLUE, },
95     { IDC_BUTTON_3,        '3',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  0), CALC_CLR_BLUE, },
96     { IDC_BUTTON_4,        '4',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  0), CALC_CLR_BLUE, },
97     { IDC_BUTTON_5,        '5',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  0), CALC_CLR_BLUE, },
98     { IDC_BUTTON_6,        '6',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  0), CALC_CLR_BLUE, },
99     { IDC_BUTTON_7,        '7',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  0), CALC_CLR_BLUE, },
100     { IDC_BUTTON_8,        '8',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  0,  0), CALC_CLR_BLUE, },
101     { IDC_BUTTON_9,        '9',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  0,  0), CALC_CLR_BLUE, },
102     { IDC_BUTTON_DOT,      '.',     MAKE_BITMASK5(  1,  0,  0,  0,  1,  0,  0), CALC_CLR_BLUE, },
103     { IDC_BUTTON_DOT,      ',',     MAKE_BITMASK5(  1,  0,  0,  0,  1,  0,  0), -1,            },
104     { IDC_BUTTON_ADD,      '+',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  1), CALC_CLR_RED,  },
105     { IDC_BUTTON_SUB,      '-',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  1), CALC_CLR_RED,  },
106     { IDC_BUTTON_MULT,     '*',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  1), CALC_CLR_RED,  },
107     { IDC_BUTTON_DIV,      '/',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  1), CALC_CLR_RED,  },
108     { IDC_BUTTON_AND,      '&',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  1), CALC_CLR_RED,  },
109     { IDC_BUTTON_OR,       '|',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  1), CALC_CLR_RED,  },
110     { IDC_BUTTON_XOR,      '^',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  1), CALC_CLR_RED,  },
111     { IDC_BUTTON_LSH,      '<',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  1), CALC_CLR_RED,  },
112     { IDC_BUTTON_NOT,      '~',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  1), CALC_CLR_RED,  },
113     { IDC_BUTTON_INT,      ';',     MAKE_BITMASK5(  1,  0,  0,  0,  1,  0,  0), CALC_CLR_RED,  },
114     { IDC_BUTTON_EQU,      '=',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  1), CALC_CLR_RED,  },
115     { IDC_BUTTON_A,        'A',     MAKE_BITMASK5(  1,  0,  0,  1,  0,  0,  0), CALC_CLR_BLUE, },
116     { IDC_BUTTON_B,        'B',     MAKE_BITMASK5(  1,  0,  0,  1,  0,  0,  0), CALC_CLR_BLUE, },
117     { IDC_BUTTON_C,        'C',     MAKE_BITMASK5(  1,  0,  0,  1,  0,  0,  0), CALC_CLR_BLUE, },
118     { IDC_BUTTON_D,        'D',     MAKE_BITMASK5(  1,  0,  0,  1,  0,  0,  0), CALC_CLR_BLUE, },
119     { IDC_BUTTON_E,        'E',     MAKE_BITMASK5(  1,  0,  0,  1,  0,  0,  0), CALC_CLR_BLUE, },
120     { IDC_BUTTON_F,        'F',     MAKE_BITMASK5(  1,  0,  0,  1,  0,  0,  0), CALC_CLR_BLUE, },
121     { IDC_CHECK_HYP,       'H',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  1), -1,            },
122     { IDC_CHECK_INV,       'I',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  1), -1,            },
123     { IDC_BUTTON_LOG,      'L',     MAKE_BITMASK5(  1,  0,  0,  0,  1,  0,  0), CALC_CLR_PURP, },
124     { IDC_BUTTON_DMS,      'M',     MAKE_BITMASK5(  1,  0,  0,  0,  1,  0,  0), CALC_CLR_PURP, },
125     { IDC_BUTTON_LN,       'N',     MAKE_BITMASK5(  1,  0,  0,  0,  1,  0,  0), CALC_CLR_PURP, },
126     { IDC_BUTTON_PI,       'P',     MAKE_BITMASK5(  1,  0,  0,  0,  1,  0,  0), CALC_CLR_BLUE, },
127     { IDC_BUTTON_RX,       'R',     MAKE_BITMASK5(  1,  0,  0,  0,  1,  0,  0), CALC_CLR_PURP, },
128     { IDC_BUTTON_SIN,      'S',     MAKE_BITMASK5(  1,  0,  0,  0,  1,  0,  0), CALC_CLR_PURP, },
129     { IDC_BUTTON_COS,      'O',     MAKE_BITMASK5(  1,  0,  0,  0,  1,  0,  0), CALC_CLR_PURP, },
130     { IDC_BUTTON_TAN,      'T',     MAKE_BITMASK5(  1,  0,  0,  0,  1,  0,  0), CALC_CLR_PURP, },
131     { IDC_BUTTON_FE,       'V',     MAKE_BITMASK5(  1,  0,  0,  0,  1,  0,  0), CALC_CLR_PURP, },
132     { IDC_BUTTON_EXP,      'X',     MAKE_BITMASK5(  1,  0,  0,  0,  1,  0,  0), CALC_CLR_PURP, },
133     { IDC_BUTTON_XeY,      'Y',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  1), CALC_CLR_PURP, },
134     { IDC_BUTTON_SQRT,     '@',     MAKE_BITMASK5(  1,  0,  0,  0,  1,  0,  0), CALC_CLR_BLUE, },
135     { IDC_BUTTON_Xe2,      '@',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  1), CALC_CLR_PURP, },
136     { IDC_BUTTON_Xe3,      '#',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  1), CALC_CLR_PURP, },
137     { IDC_BUTTON_NF,       '!',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  1), CALC_CLR_PURP, },
138     { IDC_BUTTON_LEFTPAR,  '(',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  1), CALC_CLR_PURP, },
139     { IDC_BUTTON_RIGHTPAR, ')',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  1), CALC_CLR_PURP, },
140     { IDC_BUTTON_MOD,      '%',     MAKE_BITMASK5(  1,  0,  0,  1,  1,  1,  1), CALC_CLR_RED,  },
141     { IDC_BUTTON_PERCENT,  '%',     MAKE_BITMASK5(  1,  0,  0,  0,  1,  0,  0), CALC_CLR_BLUE, },
142     /*----------------------------------------------------------------------*/
143     { IDC_BUTTON_DAT,  VK_INSERT,   MAKE_BITMASK5(  0,  1,  0,  1,  1,  1,  1), CALC_CLR_BLUE, },
144     { IDC_BUTTON_EQU,  VK_RETURN,   MAKE_BITMASK5(  0,  0,  0,  1,  1,  1,  1), CALC_CLR_RED,  },
145     { IDC_BUTTON_CANC, VK_ESCAPE,   MAKE_BITMASK5(  0,  0,  0,  1,  1,  1,  1), CALC_CLR_RED,  },
146     { IDC_BUTTON_CE,   VK_DELETE,   MAKE_BITMASK5(  0,  0,  0,  1,  1,  1,  1), CALC_CLR_RED,  },
147     { IDC_BUTTON_BACK, VK_BACK,     MAKE_BITMASK5(  0,  0,  0,  1,  1,  1,  1), CALC_CLR_RED,  },
148     { IDC_RADIO_HEX,   VK_F5,       MAKE_BITMASK5(  0,  0,  0,  1,  1,  1,  1), -1,            },
149     { IDC_RADIO_DEC,   VK_F6,       MAKE_BITMASK5(  0,  0,  0,  1,  1,  1,  1), -1,            },
150     { IDC_RADIO_OCT,   VK_F7,       MAKE_BITMASK5(  0,  0,  0,  1,  1,  1,  1), -1,            },
151     { IDC_RADIO_BIN,   VK_F8,       MAKE_BITMASK5(  0,  0,  0,  1,  1,  1,  1), -1,            },
152     { IDC_BUTTON_SIGN, VK_F9,       MAKE_BITMASK5(  0,  0,  0,  1,  1,  1,  1), CALC_CLR_BLUE, },
153 };
154 
155 static const key2code_t key2code_base16[] = {
156     { VK_F2,       IDC_RADIO_DWORD, },
157     { VK_F3,       IDC_RADIO_WORD, },
158     { VK_F4,       IDC_RADIO_BYTE, },
159     { VK_F12,      IDC_RADIO_QWORD, },
160 };
161 
162 static const key2code_t key2code_base10[] = {
163     { VK_F2,       IDC_RADIO_DEG, },
164     { VK_F3,       IDC_RADIO_RAD, },
165     { VK_F4,       IDC_RADIO_GRAD, },
166 };
167 
168 static const WORD operator_codes[] = {
169     /* CONTROL-ID       operator */
170     (WORD)IDC_STATIC,   // RPN_OPERATOR_PARENT
171     IDC_BUTTON_PERCENT, // RPN_OPERATOR_PERCENT
172     IDC_BUTTON_EQU,     // RPN_OPERATOR_EQUAL
173     IDC_BUTTON_OR,      // RPN_OPERATOR_OR
174     IDC_BUTTON_XOR,     // RPN_OPERATOR_XOR
175     IDC_BUTTON_AND,     // RPN_OPERATOR_AND
176     IDC_BUTTON_LSH,     // RPN_OPERATOR_LSH
177     IDC_BUTTON_RSH,     // RPN_OPERATOR_RSH
178     IDC_BUTTON_ADD,     // RPN_OPERATOR_ADD
179     IDC_BUTTON_SUB,     // RPN_OPERATOR_SUB
180     IDC_BUTTON_MULT,    // RPN_OPERATOR_MULT
181     IDC_BUTTON_DIV,     // RPN_OPERATOR_DIV
182     IDC_BUTTON_MOD,     // RPN_OPERATOR_MOD
183     IDC_BUTTON_XeY,     // RPN_OPERATOR_POW
184     IDC_BUTTON_XrY,     // RPN_OPERATOR_SQR
185 };
186 
187 typedef void (*rpn_callback1)(calc_number_t *);
188 
189 typedef struct {
190     WORD            idc;
191     BYTE            range;
192     BYTE            check_nan;
193     rpn_callback1   direct;
194     rpn_callback1   inverse;
195     rpn_callback1   hyperb;
196     rpn_callback1   inv_hyp;
197 } function_table_t;
198 
199 static void run_fe(calc_number_t *number);
200 static void run_dat_sta(calc_number_t *number);
201 static void run_mp(calc_number_t *c);
202 static void run_mm(calc_number_t *c);
203 static void run_ms(calc_number_t *c);
204 static void run_mw(calc_number_t *c);
205 static void run_canc(calc_number_t *c);
206 static void run_rpar(calc_number_t *c);
207 static void run_lpar(calc_number_t *c);
208 
209 static const function_table_t function_table[] = {
210     { IDC_BUTTON_SIN,  MODIFIER_INV|MODIFIER_HYP, 1, rpn_sin,     rpn_asin,    rpn_sinh, rpn_asinh },
211     { IDC_BUTTON_COS,  MODIFIER_INV|MODIFIER_HYP, 1, rpn_cos,     rpn_acos,    rpn_cosh, rpn_acosh },
212     { IDC_BUTTON_TAN,  MODIFIER_INV|MODIFIER_HYP, 1, rpn_tan,     rpn_atan,    rpn_tanh, rpn_atanh },
213     { IDC_BUTTON_INT,  MODIFIER_INV,              1, rpn_int,     rpn_frac,    NULL,     NULL      },
214     { IDC_BUTTON_RX,   0,                         1, rpn_reci,    NULL,        NULL,     NULL      },
215     { IDC_BUTTON_NOT,  0,                         1, rpn_not,     NULL,        NULL,     NULL      },
216     { IDC_BUTTON_PI,   MODIFIER_INV,              0, rpn_pi,      rpn_2pi,     NULL,     NULL      },
217     { IDC_BUTTON_Xe2,  MODIFIER_INV,              1, rpn_exp2,    rpn_sqrt,    NULL,     NULL      },
218     { IDC_BUTTON_Xe3,  MODIFIER_INV,              1, rpn_exp3,    rpn_cbrt,    NULL,     NULL      },
219     { IDC_BUTTON_LN,   MODIFIER_INV,              1, rpn_ln,      rpn_exp,     NULL,     NULL      },
220     { IDC_BUTTON_LOG,  MODIFIER_INV,              1, rpn_log,     rpn_exp10,   NULL,     NULL      },
221     { IDC_BUTTON_NF,   0,                         1, rpn_fact,    NULL,        NULL,     NULL      },
222     { IDC_BUTTON_AVE,  MODIFIER_INV,              0, rpn_ave,     rpn_ave2,    NULL,     NULL      },
223     { IDC_BUTTON_SUM,  MODIFIER_INV,              0, rpn_sum,     rpn_sum2,    NULL,     NULL      },
224     { IDC_BUTTON_S,    MODIFIER_INV,              0, rpn_s_m1,    rpn_s,       NULL,     NULL      },
225     { IDC_BUTTON_SQRT, MODIFIER_INV,              1, rpn_sqrt,    NULL,        NULL,     NULL      },
226     { IDC_BUTTON_DMS,  MODIFIER_INV,              1, rpn_dec2dms, rpn_dms2dec, NULL,     NULL      },
227     { IDC_BUTTON_FE,   0,                         1, run_fe,      NULL,        NULL,     NULL      },
228     { IDC_BUTTON_DAT,  0,                         1, run_dat_sta, NULL,        NULL,     NULL,     },
229     { IDC_BUTTON_MP,   MODIFIER_INV|NO_CHAIN,     1, run_mp,      run_mm,      NULL,     NULL,     },
230     { IDC_BUTTON_MS,   MODIFIER_INV|NO_CHAIN,     1, run_ms,      run_mw,      NULL,     NULL,     },
231     { IDC_BUTTON_CANC, NO_CHAIN,                  0, run_canc,    NULL,        NULL,     NULL,     },
232     { IDC_BUTTON_RIGHTPAR, NO_CHAIN,              1, run_rpar,    NULL,        NULL,     NULL,     },
233     { IDC_BUTTON_LEFTPAR,  NO_CHAIN,              0, run_lpar,    NULL,        NULL,     NULL,     },
234 };
235 
236 /* Sub-classing information for theming support */
237 typedef struct{
238     BOOL    bHover;
239     WNDPROC oldProc;
240 } BTNINFO,*LPBTNINFO;
241 
242 
243 /*
244  * Global variable declaration
245  */
246 
247 calc_t  calc;
248 
249 /* Hot-state info for theming support */
250 BTNINFO BtnInfo[255];
251 UINT    BtnCount;
252 
253 static void UpdateNumberIntl(void)
254 {
255     /* Get current user defaults */
256     if (!GetLocaleInfo(LOCALE_USER_DEFAULT, LOCALE_SDECIMAL, calc.sDecimal, SIZEOF(calc.sDecimal)))
257         _tcscpy(calc.sDecimal, _T("."));
258 
259     if (!GetLocaleInfo(LOCALE_USER_DEFAULT, LOCALE_STHOUSAND, calc.sThousand, SIZEOF(calc.sThousand)))
260         _tcscpy(calc.sThousand, _T(","));
261 
262     /* get the string lengths */
263     calc.sDecimal_len = _tcslen(calc.sDecimal);
264     calc.sThousand_len = _tcslen(calc.sThousand);
265 }
266 
267 static int LoadRegInt(LPCTSTR lpszApp, LPCTSTR lpszKey, int iDefault)
268 {
269     HKEY  hKey;
270     int   iValue;
271     DWORD tmp;
272 
273     if (RegOpenKeyEx(HKEY_CURRENT_USER, lpszApp, 0, KEY_QUERY_VALUE, &hKey) == ERROR_SUCCESS)
274     {
275         /* Try to load integer value */
276         tmp = sizeof(int);
277 
278         if (RegQueryValueEx(hKey, lpszKey, NULL, NULL, (LPBYTE)&iValue, &tmp) == ERROR_SUCCESS)
279             iDefault = iValue;
280 
281         /* close the key */
282         RegCloseKey(hKey);
283     }
284 
285     return iDefault;
286 }
287 
288 static void SaveRegInt(LPCTSTR lpszApp, LPCTSTR lpszKey, int iValue)
289 {
290     HKEY hKey;
291 
292     if (RegCreateKeyEx(HKEY_CURRENT_USER, lpszApp, 0, NULL, REG_OPTION_NON_VOLATILE, KEY_SET_VALUE, NULL, &hKey, NULL) == ERROR_SUCCESS)
293     {
294         RegSetValueEx(hKey, lpszKey, 0, REG_DWORD, (const BYTE*)&iValue, sizeof(int));
295 
296         /* close the key */
297         RegCloseKey(hKey);
298     }
299 }
300 
301 static void load_config(void)
302 {
303     OSVERSIONINFO osvi;
304 
305     osvi.dwOSVersionInfoSize = sizeof(osvi);
306     GetVersionEx(&osvi);
307 
308     switch (osvi.dwPlatformId) {
309     case VER_PLATFORM_WIN32s:
310     case VER_PLATFORM_WIN32_WINDOWS:
311         /* Try to load last selected layout */
312         calc.layout = GetProfileInt(_T("SciCalc"), _T("layout"), CALC_LAYOUT_STANDARD);
313 
314         /* Try to load last selected formatting option */
315         calc.usesep = (GetProfileInt(_T("SciCalc"), _T("UseSep"), FALSE)) ? TRUE : FALSE;
316         break;
317 
318     default: /* VER_PLATFORM_WIN32_NT */
319         /* Try to load last selected layout */
320         calc.layout = LoadRegInt(_T("SOFTWARE\\Microsoft\\Calc"), _T("layout"), CALC_LAYOUT_STANDARD);
321 
322         /* Try to load last selected formatting option */
323         calc.usesep = (LoadRegInt(_T("SOFTWARE\\Microsoft\\Calc"), _T("UseSep"), FALSE)) ? TRUE : FALSE;
324         break;
325     }
326 
327     /* memory is empty at startup */
328     calc.is_memory = FALSE;
329 
330     /* Get locale info for numbers */
331     UpdateNumberIntl();
332 }
333 
334 static void save_config(void)
335 {
336     TCHAR buf[32];
337     OSVERSIONINFO osvi;
338 
339     osvi.dwOSVersionInfoSize = sizeof(osvi);
340     GetVersionEx(&osvi);
341 
342     switch (osvi.dwPlatformId) {
343     case VER_PLATFORM_WIN32s:
344     case VER_PLATFORM_WIN32_WINDOWS:
345         _stprintf(buf, _T("%lu"), calc.layout);
346         WriteProfileString(_T("SciCalc"), _T("layout"), buf);
347         WriteProfileString(_T("SciCalc"), _T("UseSep"), (calc.usesep==TRUE) ? _T("1") : _T("0"));
348         break;
349 
350     default: /* VER_PLATFORM_WIN32_NT */
351         SaveRegInt(_T("SOFTWARE\\Microsoft\\Calc"), _T("layout"), calc.layout);
352         SaveRegInt(_T("SOFTWARE\\Microsoft\\Calc"), _T("UseSep"), calc.usesep);
353         break;
354     }
355 }
356 
357 static LRESULT post_key_press(LPARAM lParam, WORD idc)
358 {
359     HWND  hCtlWnd = GetDlgItem(calc.hWnd,idc);
360     TCHAR ClassName[64];
361 
362     /* check if the key is enabled! */
363     if (!IsWindowEnabled(hCtlWnd))
364         return 1;
365 
366     if (!GetClassName(hCtlWnd, ClassName, SIZEOF(ClassName)))
367         return 1;
368 
369     if (!_tcscmp(ClassName, WC_BUTTON)) {
370         DWORD dwStyle = GetWindowLongPtr(hCtlWnd, GWL_STYLE) & 0xF;
371 
372         /* Set states for press/release, but only for push buttons */
373         if (dwStyle == BS_PUSHBUTTON || dwStyle == BS_DEFPUSHBUTTON || dwStyle == BS_OWNERDRAW) {
374             if (!(lParam & KEY_WAS_DOWN)) {
375                 PostMessage(hCtlWnd, BM_SETSTATE, 1, 0);
376             } else
377             if ((lParam & KEY_IS_UP)) {
378                 PostMessage(hCtlWnd, BM_SETSTATE, 0, 0);
379                 PostMessage(hCtlWnd, BM_CLICK, 0, 0);
380             }
381             return 1;
382         }
383     }
384     /* default action: simple click event at key release */
385     if ((lParam & KEY_IS_UP)) {
386         PostMessage(hCtlWnd, BM_CLICK, 0, 0);
387     }
388     return 1;
389 }
390 
391 static int vk2ascii(unsigned int vk)
392 {
393     unsigned short int s;
394     int                scan;
395     BYTE               state[256];
396     HKL                layout=GetKeyboardLayout(0);
397 
398     if(!GetKeyboardState(state))
399         return 0;
400 
401     scan=MapVirtualKeyEx(vk, 0, layout);
402     s = 0;
403     if (ToAsciiEx(vk, scan, state, &s, 0, layout)>0) {
404         /* convert to upper case */
405         if (s >= 'a' && s <= 'z')
406             s = s - 'a' + 'A';
407         /* add check to CTRL key */
408         if (vk >= 'A' && vk <= 'Z' &&
409             s >= CTRL_A && s <= CTRL_Z)
410             s |= CTRL_FLAG;
411         else
412         if (GetAsyncKeyState(VK_MENU) < 0)
413             s |= ALT_FLAG;
414         return s;
415     }
416     return 0;
417 }
418 
419 static int process_vk_key(WPARAM wParam, LPARAM lParam)
420 {
421     const key2code_t *k;
422     unsigned int x;
423     unsigned short int ch;
424 
425     ch = vk2ascii(LOWORD(wParam));
426     if ((lParam & KEY_IS_UP)) {
427         /* Test for "copy" to clipboard */
428         if (ch == (CTRL_C|CTRL_FLAG)) {
429             SendMessage(calc.hWnd, WM_COMMAND, IDM_EDIT_COPY, 0);
430             return 1;
431         }
432         /* Test for "paste" from clipboard */
433         if (ch == (CTRL_V|CTRL_FLAG)) {
434             SendMessage(calc.hWnd, WM_COMMAND, IDM_EDIT_PASTE, 0);
435             return 1;
436         }
437         /* Test of help menu */
438         if (LOWORD(wParam) == VK_F1) {
439             SendMessage(calc.hWnd, WM_COMMAND, IDM_HELP_HELP, 0);
440             return 1;
441         }
442     }
443 
444     for (x=0; x<SIZEOF(key2code); x++) {
445         int key = key2code[x].key;
446         if (key2code[x].mask & BITMASK_IS_CTRL)
447             key |= CTRL_FLAG;
448         if ((key == ch             &&  (key2code[x].mask & BITMASK_IS_ASCII)) ||
449             (key == LOWORD(wParam) && !(key2code[x].mask & BITMASK_IS_ASCII))
450            ) {
451             if (GetDlgItem(calc.hWnd, key2code[x].idc) == NULL)
452                 continue;
453             return post_key_press(lParam, key2code[x].idc);
454         }
455     }
456     if (calc.layout == CALC_LAYOUT_SCIENTIFIC) {
457         if (calc.base == IDC_RADIO_DEC) {
458             k = key2code_base10;
459             x = SIZEOF(key2code_base10);
460         } else {
461             k = key2code_base16;
462             x = SIZEOF(key2code_base16);
463         }
464         do {
465             if (k->key == LOWORD(wParam)) {
466                 return post_key_press(lParam, k->idc);
467             }
468             k++;
469         } while (--x);
470     }
471     return 0;
472 }
473 
474 #ifdef USE_KEYBOARD_HOOK
475 static LRESULT CALLBACK
476 KeyboardHookProc(int nCode, WPARAM wParam, LPARAM lParam)
477 {
478     if(nCode<0 || calc.is_menu_on)
479         return CallNextHookEx(calc.hKeyboardHook,nCode,wParam,lParam);
480 
481     if(nCode==HC_ACTION)
482         if (process_vk_key(wParam, lParam))
483             return;
484 
485     return CallNextHookEx(calc.hKeyboardHook,nCode,wParam,lParam);
486 }
487 #endif
488 
489 static void update_lcd_display(HWND hwnd)
490 {
491     /*
492      * multiply size of calc.buffer by 2 because it may
493      * happen that separator is used between each digit.
494      * Also added little additional space for dot and '\0'.
495      */
496     TCHAR tmp[MAX_CALC_SIZE * 2 + 2];
497 
498     if (calc.buffer[0] == _T('\0'))
499         _tcscpy(tmp, _T("0"));
500     else
501         _tcscpy(tmp, calc.buffer);
502 
503     /* Add final '.' in decimal mode (if it's missing), but
504      * only if it's a result: no append if it prints "ERROR".
505      */
506     if (calc.base == IDC_RADIO_DEC && !calc.is_nan) {
507         if (_tcschr(tmp, _T('.')) == NULL)
508             _tcscat(tmp, _T("."));
509     }
510     /* if separator mode is on, let's add an additional space */
511     if (calc.usesep && !calc.sci_in && !calc.sci_out && !calc.is_nan) {
512         /* go to the integer part of the string */
513         TCHAR *p = _tcschr(tmp, _T('.'));
514         TCHAR *e = _tcschr(tmp, _T('\0'));
515         int    n=0, t;
516 
517         if (p == NULL) p = e;
518         switch (calc.base) {
519         case IDC_RADIO_HEX:
520         case IDC_RADIO_BIN:
521             t = 4;
522             break;
523         default:
524         /* fall here for:
525              IDC_RADIO_DEC:
526              IDC_RADIO_OCT: */
527             t = 3;
528             break;
529         }
530         while (--p > tmp) {
531             if (++n == t && *(p-1) != _T('-')) {
532                 memmove(p+1, p, (e-p+1)*sizeof(TCHAR));
533                 e++;
534                 *p = _T(' ');
535                 n = 0;
536             }
537         }
538         /* if decimal mode, apply regional settings */
539         if (calc.base == IDC_RADIO_DEC) {
540             TCHAR *p = tmp;
541             TCHAR *e = _tcschr(tmp, _T('.'));
542 
543             /* searching for thousands default separator */
544             while (p < e) {
545                 if (*p == _T(' ')) {
546                     memmove(p+calc.sThousand_len, p+1, _tcslen(p)*sizeof(TCHAR));
547                     memcpy(p, calc.sThousand, calc.sThousand_len*sizeof(TCHAR));
548                     p += calc.sThousand_len;
549                 } else
550                     p++;
551             }
552             /* update decimal point too. */
553             memmove(p+calc.sDecimal_len, p+1, _tcslen(p)*sizeof(TCHAR));
554             memcpy(p, calc.sDecimal, calc.sDecimal_len*sizeof(TCHAR));
555         }
556     } else {
557         TCHAR *p = _tcschr(tmp, _T('.'));
558 
559         /* update decimal point when usesep is false */
560         if (p != NULL) {
561             memmove(p+calc.sDecimal_len, p+1, _tcslen(p)*sizeof(TCHAR));
562             memcpy(p, calc.sDecimal, calc.sDecimal_len*sizeof(TCHAR));
563         }
564     }
565     SetDlgItemText(hwnd, IDC_TEXT_OUTPUT, tmp);
566 }
567 
568 static void update_parent_display(HWND hWnd)
569 {
570     TCHAR str[8];
571     int   n = eval_parent_count();
572 
573     if (!n)
574         str[0] = _T('\0');
575     else
576         _stprintf(str,_T("(=%d"), n);
577     SetDlgItemText(hWnd, IDC_TEXT_PARENT, str);
578 }
579 
580 static void build_operand(HWND hwnd, DWORD idc)
581 {
582     unsigned int i = 0, n;
583 
584     if (idc == IDC_BUTTON_DOT) {
585         /* if dot is the first char, it's added automatically */
586         if (calc.buffer == calc.ptr) {
587             *calc.ptr++ = _T('0');
588             *calc.ptr++ = _T('.');
589             *calc.ptr   = _T('\0');
590             update_lcd_display(hwnd);
591             return;
592         }
593         /* if pressed dot and it's already in the string, then return */
594         if (_tcschr(calc.buffer, _T('.')) != NULL)
595             return;
596     }
597     if (idc != IDC_STATIC) {
598         while (idc != key2code[i].idc) i++;
599     }
600     n = calc.ptr - calc.buffer;
601     if (idc == IDC_BUTTON_0 && n == 0) {
602         /* no need to put the dot because it's handled by update_lcd_display() */
603         calc.buffer[0] = _T('0');
604         calc.buffer[1] = _T('\0');
605         update_lcd_display(hwnd);
606         return;
607     }
608     switch (calc.base) {
609     case IDC_RADIO_HEX:
610         if (n >= 16)
611             return;
612         break;
613     case IDC_RADIO_DEC:
614         if (n >= SIZEOF(calc.buffer)-1)
615             return;
616         if (calc.sci_in) {
617             if (idc != IDC_STATIC)
618                 calc.esp = (calc.esp * 10 + (key2code[i].key-'0')) % LOCAL_EXP_SIZE;
619             if (calc.ptr == calc.buffer)
620                 _stprintf(calc.ptr, _T("0.e%+d"), calc.esp);
621             else {
622                 /* adds the dot at the end if the number has no decimal part */
623                 if (!_tcschr(calc.buffer, _T('.')))
624                     *calc.ptr++ = _T('.');
625                 _stprintf(calc.ptr, _T("e%+d"), calc.esp);
626             }
627             update_lcd_display(hwnd);
628             return;
629         }
630         break;
631     case IDC_RADIO_OCT:
632         if (n >= 22)
633             return;
634         break;
635     case IDC_RADIO_BIN:
636         if (n >= 64)
637             return;
638         break;
639     }
640     calc.ptr += _stprintf(calc.ptr, _T("%C"), key2code[i].key);
641     update_lcd_display(hwnd);
642 }
643 
644 static void prepare_rpn_result(calc_number_t *rpn, TCHAR *buffer, int size, int base)
645 {
646     if (calc.is_nan) {
647         rpn_zero(&calc.code);
648         LoadString(calc.hInstance, IDS_MATH_ERROR, buffer, size);
649         return;
650     }
651     prepare_rpn_result_2(rpn, buffer, size, base);
652 }
653 
654 static void set_rpn_result(HWND hwnd, calc_number_t *rpn)
655 {
656     calc.sci_in = FALSE;
657     prepare_rpn_result(rpn, calc.buffer, SIZEOF(calc.buffer), calc.base);
658     calc.ptr = calc.buffer + _tcslen(calc.buffer);
659     update_lcd_display(hwnd);
660     update_parent_display(hwnd);
661 }
662 
663 static void display_rpn_result(HWND hwnd, calc_number_t *rpn)
664 {
665     set_rpn_result(hwnd, rpn);
666     calc.ptr = calc.buffer;
667 }
668 
669 static int get_modifiers(HWND hWnd)
670 {
671     int modifiers = 0;
672 
673     if (IsDlgButtonChecked(hWnd, IDC_CHECK_INV) == BST_CHECKED)
674         modifiers |= MODIFIER_INV;
675     if (IsDlgButtonChecked(hWnd, IDC_CHECK_HYP) == BST_CHECKED)
676         modifiers |= MODIFIER_HYP;
677 
678     return modifiers;
679 }
680 
681 static void convert_text2number(calc_number_t *a)
682 {
683     /* if the screen output buffer is empty, then */
684     /* the operand is taken from the last input */
685     if (calc.buffer == calc.ptr) {
686         /* if pushed valued is ZERO then we should grab it */
687         if (!_tcscmp(calc.buffer, _T("0.")) ||
688             !_tcscmp(calc.buffer, _T("0")))
689             /* this zero is good for both integer and decimal */
690             rpn_zero(a);
691         else
692             rpn_copy(a, &calc.code);
693         return;
694     }
695     /* ZERO is the default value for all numeric bases */
696     rpn_zero(a);
697     convert_text2number_2(a);
698 }
699 
700 static const struct _update_check_menus {
701     DWORD  *sel;
702     WORD    idm;
703     WORD    idc;
704 } upd[] = {
705     { &calc.layout, IDM_VIEW_STANDARD,   CALC_LAYOUT_STANDARD },
706     { &calc.layout, IDM_VIEW_SCIENTIFIC, CALC_LAYOUT_SCIENTIFIC },
707     { &calc.layout, IDM_VIEW_CONVERSION, CALC_LAYOUT_CONVERSION },
708     /*-----------------------------------------*/
709     { &calc.base, IDM_VIEW_HEX, IDC_RADIO_HEX, },
710     { &calc.base, IDM_VIEW_DEC, IDC_RADIO_DEC, },
711     { &calc.base, IDM_VIEW_OCT, IDC_RADIO_OCT, },
712     { &calc.base, IDM_VIEW_BIN, IDC_RADIO_BIN, },
713     /*-----------------------------------------*/
714     { &calc.degr, IDM_VIEW_DEG,  IDC_RADIO_DEG, },
715     { &calc.degr, IDM_VIEW_RAD,  IDC_RADIO_RAD, },
716     { &calc.degr, IDM_VIEW_GRAD, IDC_RADIO_GRAD, },
717     /*-----------------------------------------*/
718     { &calc.size, IDM_VIEW_QWORD, IDC_RADIO_QWORD, },
719     { &calc.size, IDM_VIEW_DWORD, IDC_RADIO_DWORD, },
720     { &calc.size, IDM_VIEW_WORD,  IDC_RADIO_WORD, },
721     { &calc.size, IDM_VIEW_BYTE,  IDC_RADIO_BYTE, },
722 };
723 
724 static void update_menu(HWND hWnd)
725 {
726     HMENU        hMenu = GetSubMenu(GetMenu(hWnd), 1);
727     unsigned int x;
728 
729     for (x=0; x<SIZEOF(upd); x++) {
730         if (*(upd[x].sel) != upd[x].idc) {
731             CheckMenuItem(hMenu, upd[x].idm, MF_BYCOMMAND|MF_UNCHECKED);
732             CheckDlgButton(hWnd, upd[x].idc, BST_UNCHECKED);
733         } else {
734             CheckMenuItem(hMenu, upd[x].idm, MF_BYCOMMAND|MF_CHECKED);
735             CheckDlgButton(hWnd, upd[x].idc, BST_CHECKED);
736         }
737     }
738     CheckMenuItem(hMenu, IDM_VIEW_GROUP, MF_BYCOMMAND|(calc.usesep ? MF_CHECKED : MF_UNCHECKED));
739 }
740 
741 typedef struct {
742     WORD   idc;
743     WORD   mask;
744 } radio_config_t;
745 
746 static const radio_config_t radio_setup[] = {
747     /* CONTROL-ID                     hex dec oct bin */
748     { IDC_RADIO_QWORD,  MAKE_BITMASK4(  1,  0,  1,  1) },
749     { IDC_RADIO_DWORD,  MAKE_BITMASK4(  1,  0,  1,  1) },
750     { IDC_RADIO_WORD,   MAKE_BITMASK4(  1,  0,  1,  1) },
751     { IDC_RADIO_BYTE,   MAKE_BITMASK4(  1,  0,  1,  1) },
752     { IDC_RADIO_DEG,    MAKE_BITMASK4(  0,  1,  0,  0) },
753     { IDC_RADIO_RAD,    MAKE_BITMASK4(  0,  1,  0,  0) },
754     { IDC_RADIO_GRAD,   MAKE_BITMASK4(  0,  1,  0,  0) },
755 };
756 
757 static void enable_allowed_controls(HWND hwnd, DWORD base)
758 {
759     BYTE mask;
760     int  n;
761 
762     switch (base) {
763     case IDC_RADIO_DEC:
764         mask = BITMASK_DEC_MASK;
765         break;
766     case IDC_RADIO_HEX:
767         mask = BITMASK_HEX_MASK;
768         break;
769     case IDC_RADIO_OCT:
770         mask = BITMASK_OCT_MASK;
771         break;
772     case IDC_RADIO_BIN:
773         mask = BITMASK_BIN_MASK;
774         break;
775     default:
776         return;
777     }
778     for (n=0; n<SIZEOF(key2code); n++) {
779         if (key2code[n].mask != 0) {
780             HWND hCtlWnd = GetDlgItem(hwnd, key2code[n].idc);
781             BOOL current;
782 
783             if ((key2code[n].mask & BITMASK_IS_STATS))
784                 current = IsWindow(calc.hStatWnd) ? TRUE : FALSE;
785             else
786                 current = (key2code[n].mask & mask) ? TRUE : FALSE;
787             if (IsWindowEnabled(hCtlWnd) != current)
788                 EnableWindow(hCtlWnd, current);
789         }
790     }
791 }
792 
793 static void update_radio(HWND hwnd, unsigned int base)
794 {
795     HMENU   hMenu;
796     LPCTSTR lpMenuId;
797     WORD    mask;
798     int     n;
799 
800     switch (base) {
801     case IDC_RADIO_DEC:
802         lpMenuId = MAKEINTRESOURCE(IDR_MENU_SCIENTIFIC_1);
803         mask = BITMASK_DEC_MASK;
804         break;
805     case IDC_RADIO_HEX:
806         lpMenuId = MAKEINTRESOURCE(IDR_MENU_SCIENTIFIC_2);
807         mask = BITMASK_HEX_MASK;
808         break;
809     case IDC_RADIO_OCT:
810         lpMenuId = MAKEINTRESOURCE(IDR_MENU_SCIENTIFIC_2);
811         mask = BITMASK_OCT_MASK;
812         break;
813     case IDC_RADIO_BIN:
814         lpMenuId = MAKEINTRESOURCE(IDR_MENU_SCIENTIFIC_2);
815         mask = BITMASK_BIN_MASK;
816         break;
817     default:
818         return;
819     }
820 
821     if (calc.base != base) {
822         convert_text2number(&calc.code);
823         convert_real_integer(base);
824         calc.base = base;
825         display_rpn_result(hwnd, &calc.code);
826 
827         hMenu = GetMenu(hwnd);
828         DestroyMenu(hMenu);
829         hMenu = LoadMenu(calc.hInstance, lpMenuId);
830         SetMenu(hwnd, hMenu);
831         update_menu(hwnd);
832 
833         for (n=0; n<SIZEOF(radio_setup); n++)
834             ShowWindow(GetDlgItem(hwnd, radio_setup[n].idc), (radio_setup[n].mask & mask) ? SW_SHOW : SW_HIDE);
835 
836         enable_allowed_controls(hwnd, base);
837     }
838 
839     CheckRadioButton(hwnd, IDC_RADIO_HEX, IDC_RADIO_BIN, calc.base);
840 
841     if (base == IDC_RADIO_DEC)
842         CheckRadioButton(hwnd, IDC_RADIO_DEG, IDC_RADIO_GRAD, calc.degr);
843     else
844         CheckRadioButton(hwnd, IDC_RADIO_QWORD, IDC_RADIO_BYTE, calc.size);
845 }
846 
847 static void update_memory_flag(HWND hWnd, BOOL mem_flag)
848 {
849     calc.is_memory = mem_flag;
850     SetDlgItemText(hWnd, IDC_TEXT_MEMORY, mem_flag ? _T("M") : _T(""));
851 }
852 
853 static void update_n_stats_items(HWND hWnd, TCHAR *buffer)
854 {
855     unsigned int n = SendDlgItemMessage(hWnd, IDC_LIST_STAT, LB_GETCOUNT, 0, 0);
856 
857     _stprintf(buffer, _T("n=%u"), n);
858     SetDlgItemText(hWnd, IDC_TEXT_NITEMS, buffer);
859 }
860 
861 static void clean_stat_list(void)
862 {
863     statistic_t *p = calc.stat;
864 
865     while (p != NULL) {
866         statistic_t *s = p;
867         p = (statistic_t *)(p->next);
868         rpn_free(&s->num);
869         free(s);
870     }
871     calc.stat = p;
872 }
873 
874 static void delete_stat_item(int n)
875 {
876     statistic_t *p = calc.stat;
877     statistic_t *s;
878 
879     if (n == 0) {
880         calc.stat = (statistic_t *)p->next;
881         rpn_free(&p->num);
882         free(p);
883     } else {
884         s = (statistic_t *)p->next;
885         while (--n) {
886             p = s;
887             s = (statistic_t *)p->next;
888         }
889         p->next = s->next;
890         rpn_free(&s->num);
891         free(s);
892     }
893 }
894 
895 static char *ReadConversion(const char *formula)
896 {
897     intptr_t len = strlen(formula);
898     char *str = (char *)malloc(len+3);
899 
900     if (str == NULL)
901         return NULL;
902 
903     str[0] = '(';
904     memcpy(str+1, formula, len);
905     str[len+1] = ')';
906     str[len+2] = '\0';
907 
908     _tcscpy(calc.source, (*calc.buffer == _T('\0')) ? _T("0") : calc.buffer);
909 
910     /* clear display content before proceeding */
911     calc.ptr = calc.buffer;
912     calc.buffer[0] = _T('\0');
913 
914     return str;
915 }
916 
917 static INT_PTR CALLBACK DlgStatProc(HWND hWnd, UINT msg, WPARAM wp, LPARAM lp)
918 {
919     TCHAR buffer[SIZEOF(calc.buffer)];
920     DWORD n;
921 
922     switch (msg) {
923     case WM_INITDIALOG:
924         return TRUE;
925     case WM_COMMAND:
926         switch (LOWORD(wp)) {
927         case IDC_LIST_STAT:
928             if (HIWORD(wp) == CBN_DBLCLK)
929                 SendMessage(hWnd, WM_COMMAND, (WPARAM)IDC_BUTTON_LOAD, 0);
930             return TRUE;
931         case IDC_BUTTON_RET:
932             SetFocus(GetDlgItem(GetParent(hWnd), IDC_BUTTON_FOCUS));
933             return TRUE;
934         case IDC_BUTTON_LOAD:
935             n = SendDlgItemMessage(hWnd, IDC_LIST_STAT, LB_GETCURSEL, 0, 0);
936             if (n == LB_ERR)
937                 return TRUE;
938             PostMessage(GetParent(hWnd), WM_LOAD_STAT, (WPARAM)n, 0);
939             return TRUE;
940         case IDC_BUTTON_CD:
941             n = SendDlgItemMessage(hWnd, IDC_LIST_STAT, LB_GETCURSEL, 0, 0);
942             if (n == LB_ERR)
943                 return TRUE;
944             SendDlgItemMessage(hWnd, IDC_LIST_STAT, LB_DELETESTRING, (WPARAM)n, 0);
945             update_n_stats_items(hWnd, buffer);
946             delete_stat_item(n);
947             return TRUE;
948         case IDC_BUTTON_CAD:
949             SendDlgItemMessage(hWnd, IDC_LIST_STAT, LB_RESETCONTENT, 0, 0);
950             clean_stat_list();
951             update_n_stats_items(hWnd, buffer);
952             return TRUE;
953         }
954         break;
955     case WM_CLOSE:
956         DestroyWindow(hWnd);
957         return TRUE;
958     case WM_DESTROY:
959         clean_stat_list();
960         PostMessage(GetParent(hWnd), WM_CLOSE_STATS, 0, 0);
961         return TRUE;
962     case WM_INSERT_STAT:
963         prepare_rpn_result(&(((statistic_t *)lp)->num),
964                            buffer, SIZEOF(buffer),
965                            ((statistic_t *)lp)->base);
966         SendDlgItemMessage(hWnd, IDC_LIST_STAT, LB_ADDSTRING, 0, (LPARAM)buffer);
967         update_n_stats_items(hWnd, buffer);
968         return TRUE;
969     }
970     return FALSE;
971 }
972 
973 static WPARAM idm_2_idc(int idm)
974 {
975     int x;
976 
977     for (x=0; x<SIZEOF(upd); x++) {
978         if (upd[x].idm == idm)
979             break;
980     }
981     return (WPARAM)(upd[x].idc);
982 }
983 
984 static void CopyMemToClipboard(void *ptr)
985 {
986     if(OpenClipboard(NULL)) {
987         HGLOBAL  clipbuffer;
988         TCHAR   *buffer;
989 
990         EmptyClipboard();
991         clipbuffer = GlobalAlloc(GMEM_DDESHARE, (_tcslen(ptr)+1)*sizeof(TCHAR));
992         buffer = (TCHAR *)GlobalLock(clipbuffer);
993         _tcscpy(buffer, ptr);
994         GlobalUnlock(clipbuffer);
995 #ifdef UNICODE
996         SetClipboardData(CF_UNICODETEXT,clipbuffer);
997 #else
998         SetClipboardData(CF_TEXT,clipbuffer);
999 #endif
1000         CloseClipboard();
1001     }
1002 }
1003 
1004 static void handle_copy_command(HWND hWnd)
1005 {
1006     TCHAR display[MAX_CALC_SIZE];
1007     UINT  n;
1008 
1009     n = GetDlgItemText(hWnd, IDC_TEXT_OUTPUT, display, SIZEOF(display));
1010 
1011     if (calc.base == IDC_RADIO_DEC && _tcschr(calc.buffer, _T('.')) == NULL)
1012         display[n - calc.sDecimal_len] = _T('\0');
1013 
1014     CopyMemToClipboard(display);
1015 }
1016 
1017 static char *ReadClipboard(void)
1018 {
1019     char *buffer = NULL;
1020 
1021     if (OpenClipboard(NULL)) {
1022         HANDLE  hData = GetClipboardData(CF_TEXT);
1023         char   *fromClipboard;
1024 
1025         if (hData != NULL) {
1026             fromClipboard = (char *)GlobalLock(hData);
1027             if (fromClipboard[0])
1028                 buffer = _strupr(_strdup(fromClipboard));
1029             GlobalUnlock( hData );
1030         }
1031         CloseClipboard();
1032     }
1033     return buffer;
1034 }
1035 
1036 static char *handle_sequence_input(HWND hwnd, sequence_t *seq)
1037 {
1038     char *ptr = seq->ptr;
1039     int ch, x;
1040 
1041     ch = *ptr++;
1042     if (ch == '\\')
1043         PostMessage(hwnd, WM_COMMAND, (WPARAM)IDC_BUTTON_DAT, 0);
1044     else
1045     if (ch == ':') {
1046         ch = *ptr;
1047         if (ch != '\0')
1048             ptr++;
1049         switch (ch) {
1050         case 'C': PostMessage(hwnd, WM_COMMAND, (WPARAM)IDC_BUTTON_MC, 0); break;
1051         case 'E': PostMessage(hwnd, WM_COMMAND, (WPARAM)IDC_BUTTON_EXP,0); break;
1052         case 'M': PostMessage(hwnd, WM_COMMAND, (WPARAM)IDC_BUTTON_MS, 0); break;
1053         case 'P': PostMessage(hwnd, WM_COMMAND, (WPARAM)IDC_BUTTON_MP, 0); break;
1054         case 'Q': PostMessage(hwnd, WM_COMMAND, (WPARAM)IDC_BUTTON_CANC, 0); break;
1055         case 'R': PostMessage(hwnd, WM_COMMAND, (WPARAM)IDC_BUTTON_MR, 0); break;
1056         }
1057     } else
1058     if (ch == '$') {
1059         calc.ptr =
1060         _tcscpy(calc.buffer, calc.source) +
1061         _tcslen(calc.source);
1062     } else {
1063         for (x=0; x<SIZEOF(key2code); x++) {
1064             if (!(key2code[x].mask & BITMASK_IS_ASCII) ||
1065                 (key2code[x].mask & BITMASK_IS_CTRL))
1066                 continue;
1067             if (key2code[x].key == ch) {
1068                 PostMessage(hwnd, WM_COMMAND, (WPARAM)key2code[x].idc, 0);
1069                 break;
1070             }
1071         }
1072     }
1073 
1074     if (*ptr != '\0')
1075     {
1076         seq->ptr = ptr;
1077         PostMessage(hwnd, seq->wm_msg, 0, 0);
1078     } else {
1079         free(seq->data);
1080         seq->data = seq->ptr = ptr = NULL;
1081     }
1082     return ptr;
1083 }
1084 
1085 static void run_dat_sta(calc_number_t *a)
1086 {
1087     statistic_t *s = (statistic_t *)malloc(sizeof(statistic_t));
1088     statistic_t *p = calc.stat;
1089 
1090     rpn_alloc(&s->num);
1091     rpn_copy(&s->num, a);
1092     s->base = calc.base;
1093     s->next = NULL;
1094     if (p == NULL)
1095         calc.stat = s;
1096     else {
1097         while (p->next != NULL)
1098             p = (statistic_t *)(p->next);
1099         p->next = s;
1100     }
1101     PostMessage(calc.hStatWnd, WM_INSERT_STAT, 0, (LPARAM)s);
1102 }
1103 
1104 static void run_mp(calc_number_t *c)
1105 {
1106     calc_node_t cn;
1107 
1108     cn.number = *c;
1109     cn.base = calc.base;
1110     run_operator(&calc.memory, &calc.memory, &cn, RPN_OPERATOR_ADD);
1111     update_memory_flag(calc.hWnd, TRUE);
1112 }
1113 
1114 static void run_mm(calc_number_t *c)
1115 {
1116     calc_node_t cn;
1117 
1118     cn.number = *c;
1119     cn.base = calc.base;
1120     run_operator(&calc.memory, &calc.memory, &cn, RPN_OPERATOR_SUB);
1121     update_memory_flag(calc.hWnd, TRUE);
1122 }
1123 
1124 static void run_ms(calc_number_t *c)
1125 {
1126     rpn_copy(&calc.memory.number, c);
1127     calc.memory.base = calc.base;
1128     update_memory_flag(calc.hWnd, rpn_is_zero(&calc.memory.number) ? FALSE : TRUE);
1129 }
1130 
1131 static void run_mw(calc_number_t *c)
1132 {
1133     calc_number_t tmp;
1134 
1135     rpn_copy(&tmp, &calc.memory.number);
1136     rpn_copy(&calc.memory.number, c);
1137     calc.memory.base = calc.base;
1138     if (calc.is_memory)
1139         rpn_copy(c, &tmp);
1140     update_memory_flag(calc.hWnd, rpn_is_zero(&calc.memory.number) ? FALSE : TRUE);
1141 }
1142 
1143 static statistic_t *upload_stat_number(int n)
1144 {
1145     statistic_t *p = calc.stat;
1146 
1147     if (p == NULL)
1148         return p;
1149 
1150     while (n--) {
1151         p = (statistic_t *)(p->next);
1152         if (p == NULL)
1153             return p;
1154     }
1155 
1156 #ifndef ENABLE_MULTI_PRECISION
1157     if (calc.base != p->base) {
1158         if (calc.base == IDC_RADIO_DEC)
1159             calc.code.f = (double)p->num.i;
1160         else {
1161             calc.code.i = (__int64)p->num.f;
1162             apply_int_mask(&calc.code);
1163         }
1164     } else
1165 #endif
1166         rpn_copy(&calc.code, &p->num);
1167 
1168     calc.is_nan = FALSE;
1169 
1170     return p;
1171 }
1172 
1173 static void run_fe(calc_number_t *number)
1174 {
1175     calc.sci_out = ((calc.sci_out != FALSE) ? FALSE : TRUE);
1176 }
1177 
1178 static void handle_context_menu(HWND hWnd, WPARAM wp, LPARAM lp)
1179 {
1180     TCHAR text[64];
1181     HMENU hMenu = CreatePopupMenu();
1182     BOOL idm;
1183 
1184     LoadString(calc.hInstance, IDS_QUICKHELP, text, SIZEOF(text));
1185     AppendMenu(hMenu, MF_STRING | MF_ENABLED, IDM_HELP_HELP, text);
1186     idm = TrackPopupMenu( hMenu,
1187                           TPM_LEFTALIGN | TPM_TOPALIGN | TPM_RETURNCMD | TPM_RIGHTBUTTON,
1188                           LOWORD(lp),
1189                           HIWORD(lp),
1190                           0,
1191                           hWnd,
1192                           NULL);
1193     DestroyMenu(hMenu);
1194 #ifndef DISABLE_HTMLHELP_SUPPORT
1195     if (idm) {
1196         HH_POPUP popup;
1197 
1198         memset(&popup, 0, sizeof(popup));
1199         popup.cbStruct = sizeof(HH_POPUP);
1200         popup.clrForeground = 1;
1201         popup.clrBackground = -1;
1202         popup.pt.x = LOWORD(lp);
1203         popup.pt.y = HIWORD(lp);
1204         popup.rcMargins.top    = -1;
1205         popup.rcMargins.bottom = -1;
1206         popup.rcMargins.left   = -1;
1207         popup.rcMargins.right  = -1;
1208         popup.idString = GetWindowLongPtr((HWND)wp, GWL_ID);
1209         calc_HtmlHelp((HWND)wp, HTMLHELP_PATH("/popups.txt"), HH_DISPLAY_TEXT_POPUP, (DWORD_PTR)&popup);
1210     }
1211 #else
1212     (void)idm;
1213 #endif
1214 }
1215 
1216 static void run_canc(calc_number_t *c)
1217 {
1218     flush_postfix();
1219     rpn_zero(c);
1220 
1221     /* clear also scientific display modes */
1222     calc.sci_out = FALSE;
1223     calc.sci_in  = FALSE;
1224 
1225     /* clear state of inv and hyp flags */
1226     CheckDlgButton(calc.hWnd, IDC_CHECK_INV, BST_UNCHECKED);
1227     CheckDlgButton(calc.hWnd, IDC_CHECK_HYP, BST_UNCHECKED);
1228 }
1229 
1230 static void run_rpar(calc_number_t *c)
1231 {
1232     exec_closeparent(c);
1233 }
1234 
1235 static void run_lpar(calc_number_t *c)
1236 {
1237     exec_infix2postfix(c, RPN_OPERATOR_PARENT);
1238 }
1239 
1240 static LRESULT CALLBACK SubclassButtonProc(HWND hWnd, WPARAM wp, LPARAM lp)
1241 {
1242     LPDRAWITEMSTRUCT dis = (LPDRAWITEMSTRUCT)lp;
1243     UINT             dwText;
1244     TCHAR            text[64];
1245     int              dx, dy, len;
1246     SIZE             size;
1247     POINT            pt;
1248 
1249     if(dis->CtlType == ODT_BUTTON)
1250     {
1251         HTHEME hTheme = NULL;
1252         LPBTNINFO lpBtnInfo;
1253 
1254         if (calc_IsAppThemed() && calc_IsThemeActive())
1255             hTheme = calc_OpenThemeData(hWnd, L"Button");
1256 
1257         if (hTheme)
1258         {
1259             int iState = 0;
1260 
1261             if ((dis->itemState & ODS_DISABLED))
1262                 iState |= PBS_DISABLED;
1263             if ((dis->itemState & ODS_SELECTED))
1264                 iState |= PBS_PRESSED;
1265 
1266             lpBtnInfo = (LPBTNINFO)GetWindowLongPtr(dis->hwndItem, GWLP_USERDATA);
1267             if (lpBtnInfo != NULL)
1268             {
1269                 if (lpBtnInfo->bHover)
1270                     iState |= PBS_HOT;
1271             }
1272 
1273             if (calc_IsThemeBackgroundPartiallyTransparent(hTheme, BP_PUSHBUTTON, iState))
1274             {
1275                 calc_DrawThemeParentBackground(dis->hwndItem, dis->hDC, &dis->rcItem);
1276             }
1277 
1278             // Draw the frame around the control
1279             calc_DrawThemeBackground(hTheme, dis->hDC, BP_PUSHBUTTON, iState, &dis->rcItem, NULL);
1280 
1281             calc_CloseThemeData(hTheme);
1282         } else {
1283             /* default state: unpushed */
1284             DWORD dwStyle = 0;
1285 
1286             if ((dis->itemState & ODS_SELECTED))
1287                 dwStyle = DFCS_PUSHED;
1288 
1289             DrawFrameControl(dis->hDC, &dis->rcItem, DFC_BUTTON, DFCS_BUTTONPUSH | dwStyle);
1290         }
1291 
1292         /* button text to write */
1293         len = GetWindowText(dis->hwndItem, text, SIZEOF(text));
1294 
1295         /*
1296          * little exception: 1/x has different color
1297          * in standard and scientific modes
1298          */
1299         if ((calc.layout == CALC_LAYOUT_STANDARD ||
1300              calc.layout == CALC_LAYOUT_CONVERSION) &&
1301             IDC_BUTTON_RX == dis->CtlID) {
1302             SetTextColor(dis->hDC, CALC_CLR_BLUE);
1303         } else
1304         for (dx=0; dx<SIZEOF(key2code); dx++) {
1305             if (key2code[dx].idc == dis->CtlID) {
1306                 SetTextColor(dis->hDC, key2code[dx].col);
1307                 break;
1308             }
1309         }
1310 
1311         /* No background, to avoid corruption of the texture */
1312         SetBkMode(dis->hDC, TRANSPARENT);
1313 
1314         /* Default state: enabled */
1315         dwText = 0;
1316         if ((dis->itemState & ODS_DISABLED))
1317             dwText = DSS_DISABLED;
1318 
1319         /* Draw the text in the button */
1320         GetTextExtentPoint32(dis->hDC, text, len, &size);
1321         dx = ((dis->rcItem.right-dis->rcItem.left) - size.cx) >> 1;
1322         dy = ((dis->rcItem.bottom-dis->rcItem.top) - size.cy) >> 1;
1323         if ((dis->itemState & ODS_SELECTED)) {
1324             dx++;
1325             dy++;
1326         }
1327         pt.x = dis->rcItem.left + dx;
1328         pt.y = dis->rcItem.top + dy;
1329         DrawState(dis->hDC, NULL, NULL, (LPARAM)text, 0, pt.x, pt.y, size.cx, size.cy, DST_TEXT | dwText);
1330     }
1331     return 1L;
1332 }
1333 
1334 static INT_PTR CALLBACK HotButtonProc(HWND hWnd, UINT msg, WPARAM wp, LPARAM lp)
1335 {
1336     LPBTNINFO lpBtnInfo = (LPBTNINFO)GetWindowLongPtr(hWnd, GWLP_USERDATA);
1337     TRACKMOUSEEVENT mouse_event;
1338 
1339     switch (msg) {
1340     case WM_MOUSEMOVE:
1341         mouse_event.cbSize = sizeof(TRACKMOUSEEVENT);
1342         mouse_event.dwFlags = TME_QUERY;
1343         if (!TrackMouseEvent(&mouse_event) || !(mouse_event.dwFlags & (TME_HOVER|TME_LEAVE)))
1344         {
1345             mouse_event.dwFlags = TME_HOVER|TME_LEAVE;
1346             mouse_event.hwndTrack = hWnd;
1347             mouse_event.dwHoverTime = 1;
1348             TrackMouseEvent(&mouse_event);
1349         }
1350         break;
1351 
1352     case WM_MOUSEHOVER:
1353         lpBtnInfo->bHover = TRUE;
1354         InvalidateRect(hWnd, NULL, FALSE);
1355         break;
1356 
1357     case WM_MOUSELEAVE:
1358         lpBtnInfo->bHover = FALSE;
1359         InvalidateRect(hWnd, NULL, FALSE);
1360         break;
1361     }
1362 
1363     return CallWindowProc(lpBtnInfo->oldProc, hWnd, msg, wp, lp);
1364 }
1365 
1366 static BOOL CALLBACK EnumChildProc(HWND hWnd, LPARAM lParam)
1367 {
1368     TCHAR szClass[64];
1369 
1370     if (!GetClassName(hWnd, szClass, SIZEOF(szClass)))
1371         return TRUE;
1372 
1373     if (!_tcscmp(szClass, WC_BUTTON))
1374     {
1375         int *pnCtrls = (int *)lParam;
1376         int nCtrls = *pnCtrls;
1377 
1378         BtnInfo[nCtrls].oldProc = (WNDPROC)GetWindowLongPtr(hWnd, GWLP_WNDPROC);
1379         BtnInfo[nCtrls].bHover  = FALSE;
1380 
1381         SetWindowLongPtr(hWnd, GWLP_USERDATA, (LONG_PTR)&BtnInfo[nCtrls]);
1382         SetWindowLongPtr(hWnd, GWLP_WNDPROC, (LONG_PTR)HotButtonProc);
1383 
1384         *pnCtrls = ++nCtrls;
1385     }
1386     return TRUE;
1387 }
1388 
1389 static INT_PTR CALLBACK OnSettingChange(HWND hWnd, WPARAM wParam, LPARAM lParam)
1390 {
1391     /* Check for user policy and area string valid */
1392     if (wParam == 0 && lParam != 0)
1393     {
1394         LPTSTR lpArea = (LPTSTR)lParam;
1395 
1396         /* Check if a parameter has been changed into the locale settings */
1397         if (!_tcsicmp(lpArea, _T("intl")))
1398         {
1399             /* Re-load locale parameters */
1400             UpdateNumberIntl();
1401 
1402             /* Update text for decimal button */
1403             SetDlgItemText(hWnd, IDC_BUTTON_DOT, calc.sDecimal);
1404 
1405             /* Update text into the output display */
1406             update_lcd_display(hWnd);
1407         }
1408     }
1409     return 0;
1410 }
1411 
1412 static INT_PTR CALLBACK DlgMainProc(HWND hWnd, UINT msg, WPARAM wp, LPARAM lp)
1413 {
1414     unsigned int x;
1415     RECT         rc;
1416 
1417     switch (msg) {
1418     case WM_DRAWITEM:
1419         return SubclassButtonProc(hWnd, wp, lp);
1420 
1421     case WM_INITDIALOG:
1422 #ifdef DISABLE_HTMLHELP_SUPPORT
1423         EnableMenuItem(GetMenu(hWnd), IDM_HELP_HELP, MF_BYCOMMAND | MF_GRAYED);
1424 #endif
1425         calc.hWnd=hWnd;
1426         /* Enumerate children and apply hover function */
1427         BtnCount = 0;
1428         EnumChildWindows(hWnd, EnumChildProc, (LPARAM)&BtnCount);
1429 
1430 #ifdef USE_KEYBOARD_HOOK
1431         calc.hKeyboardHook=SetWindowsHookEx(
1432                                        WH_KEYBOARD,
1433                                        KeyboardHookProc,
1434                                        NULL,
1435                                        GetCurrentThreadId()
1436                                       );
1437 #endif
1438         rpn_zero(&calc.code);
1439         calc.sci_out = FALSE;
1440         calc.base = IDC_RADIO_DEC;
1441         calc.size = IDC_RADIO_QWORD;
1442         calc.degr = IDC_RADIO_DEG;
1443         calc.ptr  = calc.buffer;
1444         calc.is_nan = FALSE;
1445         enable_allowed_controls(hWnd, IDC_RADIO_DEC);
1446         update_radio(hWnd, IDC_RADIO_DEC);
1447         update_menu(hWnd);
1448         display_rpn_result(hWnd, &calc.code);
1449         update_memory_flag(hWnd, calc.is_memory);
1450         /* remove keyboard focus */
1451         SetFocus(GetDlgItem(hWnd, IDC_BUTTON_FOCUS));
1452         /* set our calc icon */
1453         SendMessage(hWnd, WM_SETICON, ICON_BIG,   (LPARAM)calc.hBgIcon);
1454         SendMessage(hWnd, WM_SETICON, ICON_SMALL, (LPARAM)calc.hSmIcon);
1455         /* update text for decimal button */
1456         SetDlgItemText(hWnd, IDC_BUTTON_DOT, calc.sDecimal);
1457         /* Fill combo box for conversion */
1458         if (calc.layout == CALC_LAYOUT_CONVERSION)
1459             ConvInit(hWnd);
1460         /* Restore the window at the same position it was */
1461         if (calc.x_coord >= 0 && calc.y_coord >= 0) {
1462             int w, h, sw, sh;
1463 
1464             GetWindowRect(hWnd, &rc);
1465             w = rc.right-rc.left;
1466             h = rc.bottom-rc.top;
1467             sw = GetSystemMetrics(SM_CXSCREEN);
1468             sh = GetSystemMetrics(SM_CYSCREEN);
1469             if (calc.x_coord+w > sw) calc.x_coord = sw - w;
1470             if (calc.y_coord+h > sh) calc.y_coord = sh - h;
1471             MoveWindow(hWnd, calc.x_coord, calc.y_coord, w, h, FALSE);
1472         }
1473         break;
1474     case WM_CTLCOLORSTATIC:
1475         if ((HWND)lp == GetDlgItem(hWnd, IDC_TEXT_OUTPUT))
1476             return (LRESULT)GetStockObject(WHITE_BRUSH);
1477         break;
1478     case WM_HANDLE_CLIPBOARD:
1479         handle_sequence_input(hWnd, &calc.Clipboard);
1480         return TRUE;
1481     case WM_COMMAND:
1482         /*
1483          * if selection of category is changed, we must
1484          * update the content of the "from/to" combo boxes.
1485          */
1486         if (wp == MAKEWPARAM(IDC_COMBO_CATEGORY, CBN_SELCHANGE)) {
1487             ConvAdjust(hWnd, SendDlgItemMessage(hWnd, IDC_COMBO_CATEGORY, CB_GETCURSEL, 0, 0));
1488             return TRUE;
1489         }
1490         if (HIWORD(wp) != BN_CLICKED && HIWORD(wp) != BN_DBLCLK)
1491             break;
1492         /* avoid flicker if the user selects from keyboard */
1493         if (GetFocus() != GetDlgItem(hWnd, IDC_BUTTON_FOCUS))
1494             SetFocus(GetDlgItem(hWnd, IDC_BUTTON_FOCUS));
1495         switch (LOWORD(wp)) {
1496         case IDM_HELP_ABOUT:
1497         {
1498             TCHAR infotitle[100];
1499             TCHAR infotext[200];
1500             LoadString(calc.hInstance, IDS_CALC_NAME, infotitle, SIZEOF(infotitle));
1501             LoadString(calc.hInstance, IDS_AUTHOR, infotext, SIZEOF(infotext));
1502             ShellAbout(hWnd, infotitle, infotext, calc.hBgIcon);
1503             return TRUE;
1504         }
1505         case IDM_HELP_HELP:
1506 #ifndef DISABLE_HTMLHELP_SUPPORT
1507             calc_HtmlHelp(hWnd, HTMLHELP_PATH("/general_information.htm"), HH_DISPLAY_TOPIC, (DWORD_PTR)NULL);
1508 #endif
1509             return TRUE;
1510         case IDM_VIEW_STANDARD:
1511             calc.layout = CALC_LAYOUT_STANDARD;
1512             calc.action = IDM_VIEW_STANDARD;
1513             DestroyWindow(hWnd);
1514             return TRUE;
1515         case IDM_VIEW_SCIENTIFIC:
1516             calc.layout = CALC_LAYOUT_SCIENTIFIC;
1517             calc.action = IDM_VIEW_SCIENTIFIC;
1518             DestroyWindow(hWnd);
1519             return TRUE;
1520         case IDM_VIEW_CONVERSION:
1521             calc.layout = CALC_LAYOUT_CONVERSION;
1522             calc.action = IDM_VIEW_CONVERSION;
1523             DestroyWindow(hWnd);
1524             return TRUE;
1525         case IDM_VIEW_HEX:
1526         case IDM_VIEW_DEC:
1527         case IDM_VIEW_OCT:
1528         case IDM_VIEW_BIN:
1529         case IDM_VIEW_DEG:
1530         case IDM_VIEW_RAD:
1531         case IDM_VIEW_GRAD:
1532         case IDM_VIEW_QWORD:
1533         case IDM_VIEW_DWORD:
1534         case IDM_VIEW_WORD:
1535         case IDM_VIEW_BYTE:
1536             SendMessage(hWnd, WM_COMMAND, idm_2_idc(LOWORD(wp)), 0);
1537             return TRUE;
1538         case IDM_EDIT_COPY:
1539             handle_copy_command(hWnd);
1540             return TRUE;
1541         case IDM_EDIT_PASTE:
1542             if (calc.Clipboard.data != NULL)
1543                 break;
1544             calc.Clipboard.data = ReadClipboard();
1545             if (calc.Clipboard.data != NULL) {
1546                 /* clear the content of the display before pasting */
1547                 PostMessage(hWnd, WM_COMMAND, IDC_BUTTON_CE, 0);
1548                 calc.Clipboard.ptr = calc.Clipboard.data;
1549                 calc.Clipboard.wm_msg = WM_HANDLE_CLIPBOARD;
1550                 handle_sequence_input(hWnd, &calc.Clipboard);
1551             }
1552             return TRUE;
1553         case IDM_VIEW_GROUP:
1554             calc.usesep = (calc.usesep ? FALSE : TRUE);
1555             update_menu(hWnd);
1556             update_lcd_display(hWnd);
1557             return TRUE;
1558         case IDC_BUTTON_CONVERT:
1559             ConvExecute(hWnd);
1560             return TRUE;
1561         case IDC_BUTTON_CE: {
1562             calc_number_t tmp;
1563             rpn_zero(&tmp);
1564             display_rpn_result(hWnd, &tmp);
1565             }
1566             return TRUE;
1567         case IDC_RADIO_DEC:
1568         case IDC_RADIO_HEX:
1569         case IDC_RADIO_OCT:
1570         case IDC_RADIO_BIN:
1571 /* GNU WINDRES is bugged so I must always force radio update */
1572 /* (Fix for Win95/98) */
1573 #ifdef _MSC_VER
1574             if (calc.base == LOWORD(wp))
1575                 break;
1576 #endif
1577             calc.is_nan = FALSE;
1578             update_radio(hWnd, LOWORD(wp));
1579             return TRUE;
1580         case IDC_RADIO_DEG:
1581         case IDC_RADIO_RAD:
1582         case IDC_RADIO_GRAD:
1583 /* GNU WINDRES is bugged so I must always force radio update */
1584 /* (Fix for Win95/98) */
1585 #ifdef _MSC_VER
1586             if (calc.degr == LOWORD(wp))
1587                 break;
1588 #endif
1589             calc.degr = LOWORD(wp);
1590             calc.is_nan = FALSE;
1591             update_menu(hWnd);
1592             return TRUE;
1593         case IDC_RADIO_QWORD:
1594         case IDC_RADIO_DWORD:
1595         case IDC_RADIO_WORD:
1596         case IDC_RADIO_BYTE:
1597 /* GNU WINDRES is bugged so I must always force radio update */
1598 /* (Fix for Win95/98) */
1599 #ifdef _MSC_VER
1600             if (calc.size == LOWORD(wp))
1601                 break;
1602 #endif
1603             calc.size = LOWORD(wp);
1604             calc.is_nan = FALSE;
1605             update_menu(hWnd);
1606             /*
1607              * update the content of the display
1608              */
1609             convert_text2number(&calc.code);
1610             apply_int_mask(&calc.code);
1611             display_rpn_result(hWnd, &calc.code);
1612             return TRUE;
1613         case IDC_BUTTON_1:
1614         case IDC_BUTTON_2:
1615         case IDC_BUTTON_3:
1616         case IDC_BUTTON_4:
1617         case IDC_BUTTON_5:
1618         case IDC_BUTTON_6:
1619         case IDC_BUTTON_7:
1620         case IDC_BUTTON_8:
1621         case IDC_BUTTON_9:
1622         case IDC_BUTTON_0:
1623         case IDC_BUTTON_DOT:
1624         case IDC_BUTTON_A:
1625         case IDC_BUTTON_B:
1626         case IDC_BUTTON_C:
1627         case IDC_BUTTON_D:
1628         case IDC_BUTTON_E:
1629         case IDC_BUTTON_F:
1630             calc.is_nan = FALSE;
1631             build_operand(hWnd, LOWORD(wp));
1632             return TRUE;
1633         case IDC_BUTTON_PERCENT:
1634         case IDC_BUTTON_ADD:
1635         case IDC_BUTTON_SUB:
1636         case IDC_BUTTON_MULT:
1637         case IDC_BUTTON_DIV:
1638         case IDC_BUTTON_MOD:
1639         case IDC_BUTTON_AND:
1640         case IDC_BUTTON_OR:
1641         case IDC_BUTTON_XOR:
1642         case IDC_BUTTON_LSH:
1643         case IDC_BUTTON_RSH:
1644         case IDC_BUTTON_EQU:
1645         case IDC_BUTTON_XeY:
1646         case IDC_BUTTON_XrY:
1647             if (calc.is_nan) break;
1648             /*
1649              * LSH and XeY buttons hold also the RSH and XrY functions with INV modifier,
1650              * but since they are two operand operators, they must be handled here.
1651              */
1652             if ((get_modifiers(hWnd) & MODIFIER_INV))
1653             {
1654                 WPARAM IdcSim = IDC_STATIC;
1655 
1656                 switch (LOWORD(wp)) {
1657                 case IDC_BUTTON_LSH: IdcSim = MAKEWPARAM(IDC_BUTTON_RSH, BN_CLICKED); break;
1658                 case IDC_BUTTON_XeY: IdcSim = MAKEWPARAM(IDC_BUTTON_XrY, BN_CLICKED); break;
1659                 }
1660 
1661                 if (IdcSim != IDC_STATIC)
1662                 {
1663                     PostMessage(hWnd, WM_COMMAND, IdcSim, 0);
1664                     CheckDlgButton(hWnd, IDC_CHECK_INV, BST_UNCHECKED);
1665                     break;
1666                 }
1667             }
1668 
1669             for (x=0; x<SIZEOF(operator_codes); x++) {
1670                 if (LOWORD(wp) == operator_codes[x]) {
1671                     convert_text2number(&calc.code);
1672 
1673                     if (calc.ptr == calc.buffer) {
1674                         if (calc.last_operator != x) {
1675                             if (x != RPN_OPERATOR_EQUAL)
1676                                 exec_change_infix();
1677                         } else
1678                         if (x == RPN_OPERATOR_EQUAL) {
1679                             exec_infix2postfix(&calc.code, calc.prev_operator);
1680                             rpn_copy(&calc.code, &calc.prev);
1681                         } else
1682                             break;
1683                     }
1684 
1685                     /* if no change then quit silently, */
1686                     /* without display updates */
1687                     if (!exec_infix2postfix(&calc.code, x))
1688                         break;
1689 
1690                     display_rpn_result(hWnd, &calc.code);
1691                     break;
1692                 }
1693             }
1694             return TRUE;
1695         case IDC_BUTTON_BACK:
1696             if (calc.sci_in) {
1697                 if (calc.esp == 0) {
1698                     TCHAR *ptr;
1699 
1700                     calc.sci_in = FALSE;
1701                     ptr = _tcschr(calc.ptr, _T('e'));
1702                     if (ptr)
1703                         *ptr = _T('\0');
1704                     update_lcd_display(hWnd);
1705                 } else {
1706                     calc.esp /= 10;
1707                     build_operand(hWnd, IDC_STATIC);
1708                 }
1709             } else
1710             if (calc.ptr != calc.buffer) {
1711                 *--calc.ptr = _T('\0');
1712                 if (!_tcscmp(calc.buffer, _T("-")) ||
1713                     !_tcscmp(calc.buffer, _T("-0")) ||
1714                     !_tcscmp(calc.buffer, _T("0"))) {
1715                     calc.ptr = calc.buffer;
1716                     calc.buffer[0] = _T('\0');
1717                 }
1718                 update_lcd_display(hWnd);
1719             }
1720             return TRUE;
1721         case IDC_BUTTON_MC:
1722             rpn_zero(&calc.memory.number);
1723             update_memory_flag(hWnd, FALSE);
1724             return TRUE;
1725         case IDC_BUTTON_MR:
1726             if (calc.is_memory) {
1727                 calc.is_nan = FALSE;
1728                 rpn_copy(&calc.code, &calc.memory.number);
1729                 display_rpn_result(hWnd, &calc.code);
1730             }
1731             return TRUE;
1732         case IDC_BUTTON_EXP:
1733             if (calc.sci_in || calc.is_nan || calc.buffer == calc.ptr)
1734                 break;
1735             calc.sci_in = TRUE;
1736             calc.esp = 0;
1737             build_operand(hWnd, IDC_STATIC);
1738             return TRUE;
1739         case IDC_BUTTON_SIGN:
1740             if (calc.sci_in) {
1741                 calc.esp = 0-calc.esp;
1742                 build_operand(hWnd, IDC_STATIC);
1743             } else {
1744                 if (calc.is_nan || calc.buffer[0] == _T('\0'))
1745                     break;
1746 
1747                 if (calc.buffer[0] == _T('-')) {
1748                     /* make the number positive */
1749                     memmove(calc.buffer, calc.buffer+1, sizeof(calc.buffer)-1);
1750                     if (calc.buffer != calc.ptr)
1751                         calc.ptr--;
1752                 } else {
1753                     /* if first char is '0' and no dot, it isn't valid */
1754                     if (calc.buffer[0] == _T('0') &&
1755                         calc.buffer[1] != _T('.'))
1756                         break;
1757                     /* make the number negative */
1758                     memmove(calc.buffer+1, calc.buffer, sizeof(calc.buffer)-1);
1759                     calc.buffer[0] = _T('-');
1760                     if (calc.buffer != calc.ptr)
1761                         calc.ptr++;
1762                 }
1763                 /* If the input buffer is empty, then
1764                    we change also the sign of calc.code
1765                    because it could be the result of a
1766                    previous calculation. */
1767                 if (calc.buffer == calc.ptr)
1768                     rpn_sign(&calc.code);
1769                 update_lcd_display(hWnd);
1770             }
1771             return TRUE;
1772         case IDC_BUTTON_RIGHTPAR:
1773         case IDC_BUTTON_LEFTPAR:
1774         case IDC_BUTTON_CANC:
1775         case IDC_BUTTON_MP:
1776         case IDC_BUTTON_DAT:
1777         case IDC_BUTTON_FE:
1778         case IDC_BUTTON_DMS:
1779         case IDC_BUTTON_SQRT:
1780         case IDC_BUTTON_S:
1781         case IDC_BUTTON_SUM:
1782         case IDC_BUTTON_AVE:
1783         case IDC_BUTTON_NF:
1784         case IDC_BUTTON_LN:
1785         case IDC_BUTTON_LOG:
1786         case IDC_BUTTON_Xe2:
1787         case IDC_BUTTON_Xe3:
1788         case IDC_BUTTON_PI:
1789         case IDC_BUTTON_NOT:
1790         case IDC_BUTTON_RX:
1791         case IDC_BUTTON_INT:
1792         case IDC_BUTTON_SIN:
1793         case IDC_BUTTON_COS:
1794         case IDC_BUTTON_TAN:
1795         case IDC_BUTTON_MS:
1796             for (x=0; x<SIZEOF(function_table); x++) {
1797                 if (LOWORD(wp) == function_table[x].idc) {
1798                     rpn_callback1 cb = NULL;
1799 
1800                     /* test if NaN state is important or not */
1801                     if (calc.is_nan && function_table[x].check_nan) break;
1802                     /* otherwise, it's cleared */
1803                     calc.is_nan = FALSE;
1804 
1805                     switch (get_modifiers(hWnd) & function_table[x].range) {
1806                     case 0:
1807                         cb = function_table[x].direct;
1808                         break;
1809                     case MODIFIER_INV:
1810                         cb = function_table[x].inverse;
1811                         break;
1812                     case MODIFIER_HYP:
1813                         cb = function_table[x].hyperb;
1814                         break;
1815                     case MODIFIER_INV|MODIFIER_HYP:
1816                         cb = function_table[x].inv_hyp;
1817                         break;
1818                     }
1819                     if (cb != NULL) {
1820                         convert_text2number(&calc.code);
1821                         cb(&calc.code);
1822 //                        display_rpn_result(hWnd, &calc.code);
1823                         set_rpn_result(hWnd, &calc.code);
1824 
1825                         if ((function_table[x].range & NO_CHAIN))
1826                             calc.ptr = calc.buffer;
1827 
1828 //                        if (!(function_table[x].range & NO_CHAIN))
1829 //                            exec_infix2postfix(&calc.code, RPN_OPERATOR_NONE);
1830                         if (function_table[x].range & MODIFIER_INV)
1831                             CheckDlgButton(hWnd, IDC_CHECK_INV, BST_UNCHECKED);
1832                         if (function_table[x].range & MODIFIER_HYP)
1833                             CheckDlgButton(hWnd, IDC_CHECK_HYP, BST_UNCHECKED);
1834                     }
1835                     break;
1836                 }
1837             }
1838             return TRUE;
1839         case IDC_BUTTON_STA:
1840             if (IsWindow(calc.hStatWnd))
1841                 break;
1842             calc.hStatWnd = CreateDialog(calc.hInstance,
1843                                     MAKEINTRESOURCE(IDD_DIALOG_STAT), hWnd, DlgStatProc);
1844             if (calc.hStatWnd != NULL) {
1845                 enable_allowed_controls(hWnd, calc.base);
1846                 SendMessage(calc.hStatWnd, WM_SETFOCUS, 0, 0);
1847             }
1848             return TRUE;
1849         }
1850         break;
1851     case WM_CLOSE_STATS:
1852         calc.hStatWnd = NULL;
1853         enable_allowed_controls(hWnd, calc.base);
1854         return TRUE;
1855     case WM_LOAD_STAT:
1856         if (upload_stat_number((int)LOWORD(wp)) != NULL)
1857             display_rpn_result(hWnd, &calc.code);
1858         return TRUE;
1859     case WM_START_CONV:
1860         x = LOWORD(lp);
1861         calc.Convert[x].data = ReadConversion(calc.Convert[x].data);
1862         if (calc.Convert[x].data != NULL) {
1863             calc.Convert[x].ptr = calc.Convert[x].data;
1864             PostMessage(hWnd, HIWORD(lp), 0, 0);
1865         }
1866         return TRUE;
1867     case WM_HANDLE_FROM:
1868         if (calc.is_nan)
1869             break;
1870         if (handle_sequence_input(hWnd, &calc.Convert[0]) == NULL)
1871             PostMessage(hWnd, WM_START_CONV, 0,
1872                         MAKELPARAM(0x0001, WM_HANDLE_TO));
1873         return TRUE;
1874     case WM_HANDLE_TO:
1875         if (!calc.is_nan)
1876             handle_sequence_input(hWnd, &calc.Convert[1]);
1877         return TRUE;
1878     case WM_CLOSE:
1879         calc.action = IDC_STATIC;
1880         DestroyWindow(hWnd);
1881         return TRUE;
1882 
1883     case WM_DESTROY:
1884         /* Get (x,y) position of the calculator */
1885         GetWindowRect(hWnd, &rc);
1886         calc.x_coord = rc.left;
1887         calc.y_coord = rc.top;
1888 #ifdef USE_KEYBOARD_HOOK
1889         UnhookWindowsHookEx(calc.hKeyboardHook);
1890 #endif
1891         PostQuitMessage(0);
1892         return TRUE;
1893     case WM_CONTEXTMENU:
1894         if ((HWND)wp != hWnd)
1895             handle_context_menu(hWnd, wp, lp);
1896         return TRUE;
1897     case WM_ENTERMENULOOP:
1898         calc.is_menu_on = TRUE;
1899         /* Check if a valid format is available in the clipboard */
1900         EnableMenuItem(GetSubMenu(GetMenu(hWnd), 0),
1901                        IDM_EDIT_PASTE,
1902                        MF_BYCOMMAND|
1903                        (IsClipboardFormatAvailable(CF_TEXT) ?
1904                        MF_ENABLED : MF_GRAYED));
1905         break;
1906     case WM_EXITMENULOOP:
1907         calc.is_menu_on = FALSE;
1908         break;
1909 
1910     case WM_SETTINGCHANGE:
1911         return OnSettingChange(hWnd, wp, lp);
1912 
1913     case WM_THEMECHANGED:
1914         InvalidateRect(hWnd, NULL, FALSE);
1915         break;
1916     }
1917     return FALSE;
1918 }
1919 
1920 #if defined(__GNUC__) && !defined(__REACTOS__)
1921 int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd)
1922 #else
1923 int WINAPI _tWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nShowCmd)
1924 #endif
1925 {
1926     MSG msg;
1927     DWORD dwLayout;
1928 
1929     /* Initialize controls for theming & manifest support */
1930     InitCommonControls();
1931 
1932     calc.hInstance = hInstance;
1933 
1934     calc.x_coord = -1;
1935     calc.y_coord = -1;
1936 
1937     load_config();
1938     start_rpn_engine();
1939 
1940     HtmlHelp_Start(hInstance);
1941 
1942     Theme_Start(hInstance);
1943 
1944     calc.hBgIcon = LoadImage(
1945                     hInstance,
1946                     MAKEINTRESOURCE(IDI_CALC),
1947                     IMAGE_ICON,
1948                     GetSystemMetrics(SM_CXICON),
1949                     GetSystemMetrics(SM_CYICON),
1950                     0);
1951 
1952     calc.hSmIcon = LoadImage(
1953                     hInstance,
1954                     MAKEINTRESOURCE(IDI_CALC),
1955                     IMAGE_ICON,
1956                     GetSystemMetrics(SM_CXSMICON),
1957                     GetSystemMetrics(SM_CYSMICON),
1958                     0);
1959 
1960     do {
1961         /* ignore hwnd: dialogs are already visible! */
1962         if (calc.layout == CALC_LAYOUT_SCIENTIFIC)
1963             dwLayout = IDD_DIALOG_SCIENTIFIC;
1964         else
1965         if (calc.layout == CALC_LAYOUT_CONVERSION)
1966             dwLayout = IDD_DIALOG_CONVERSION;
1967         else
1968             dwLayout = IDD_DIALOG_STANDARD;
1969 
1970         /* This call will always fail if UNICODE for Win9x */
1971         if (NULL == CreateDialog(hInstance, MAKEINTRESOURCE(dwLayout), NULL, DlgMainProc))
1972             break;
1973 
1974         while (GetMessage(&msg, NULL, 0, 0)) {
1975 #ifndef USE_KEYBOARD_HOOK
1976             if ((msg.message == WM_KEYUP ||
1977                 msg.message == WM_KEYDOWN) &&
1978                 !calc.is_menu_on)
1979                 process_vk_key(msg.wParam, msg.lParam);
1980 #endif
1981             TranslateMessage(&msg);
1982             DispatchMessage(&msg);
1983         }
1984 
1985         save_config();
1986     } while (calc.action != IDC_STATIC);
1987 
1988     if (calc.hBgIcon != NULL)
1989         DestroyIcon(calc.hBgIcon);
1990 
1991     if (calc.hSmIcon != NULL)
1992         DestroyIcon(calc.hSmIcon);
1993 
1994     stop_rpn_engine();
1995 
1996     Theme_Stop();
1997     HtmlHelp_Stop();
1998 
1999     return 0;
2000 }
2001