1 #include <windows.h>
2 #include <stdio.h>
3 #include <string.h>
4 
5 BOOL WINAPI GdiGradientFill( HDC hdc, TRIVERTEX *vert_array, ULONG nvert,
6                            void * grad_array, ULONG ngrad, ULONG mode );
7 
8 LRESULT WINAPI MainWndProc(HWND, UINT, WPARAM, LPARAM);
9 
10 int WINAPI
11 WinMain(HINSTANCE hInstance,
12 	HINSTANCE hPrevInstance,
13 	LPSTR lpszCmdLine,
14 	int nCmdShow)
15 {
16   WNDCLASS wc;
17   MSG msg;
18   HWND hWnd;
19 
20   wc.lpszClassName = "GradientClass";
21   wc.lpfnWndProc = MainWndProc;
22   wc.style = CS_VREDRAW | CS_HREDRAW;
23   wc.hInstance = hInstance;
24   wc.hIcon = LoadIcon(NULL, (LPCTSTR)IDI_APPLICATION);
25   wc.hCursor = LoadCursor(NULL, (LPCTSTR)IDC_ARROW);
26   wc.hbrBackground = (HBRUSH)GetStockObject(GRAY_BRUSH);
27   wc.lpszMenuName = NULL;
28   wc.cbClsExtra = 0;
29   wc.cbWndExtra = 0;
30   if (RegisterClass(&wc) == 0)
31     {
32       fprintf(stderr, "RegisterClass failed (last error 0x%lX)\n",
33 	      GetLastError());
34       return(1);
35     }
36 
37   hWnd = CreateWindow("GradientClass",
38 		      "GradientFill Test",
39 		      WS_OVERLAPPEDWINDOW|WS_HSCROLL|WS_VSCROLL,
40 		      0,
41 		      0,
42 		      CW_USEDEFAULT,
43 		      CW_USEDEFAULT,
44 		      NULL,
45 		      NULL,
46 		      hInstance,
47 		      NULL);
48   if (hWnd == NULL)
49     {
50       fprintf(stderr, "CreateWindow failed (last error 0x%lX)\n",
51 	      GetLastError());
52       return(1);
53     }
54 
55 	//tf = CreateFontA(14, 0, 0, TA_BASELINE, FW_NORMAL, FALSE, FALSE, FALSE,
56 	//	ANSI_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
57 	//	DEFAULT_QUALITY, FIXED_PITCH|FF_DONTCARE, "Timmons");
58 
59   ShowWindow(hWnd, nCmdShow);
60 
61   while(GetMessage(&msg, NULL, 0, 0))
62   {
63     TranslateMessage(&msg);
64     DispatchMessage(&msg);
65   }
66 
67   //DeleteObject(tf);
68 
69   return msg.wParam;
70 }
71 LRESULT CALLBACK MainWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
72 {
73 	HDC hDC;
74 
75 	switch(msg)
76 	{
77 	case WM_PAINT:
78 	{
79 	  PAINTSTRUCT ps;
80 	  TRIVERTEX        vert [5] ;
81           GRADIENT_TRIANGLE    gTRi[3];
82           GRADIENT_RECT        gRect[2];
83 	  hDC = BeginPaint(hWnd, &ps);
84 
85 	  vert [0] .x       =  0;
86 	  vert [0] .y       =  0;
87 	  vert [0] .Red     =  0xff00;
88 	  vert [0] .Green   =  0xff00;
89 	  vert [0] .Blue    =  0xff00;
90 	  vert [0] .Alpha   =  0x0000;
91 
92 	  vert [1] .x       =  300;
93 	  vert [1] .y       =  20;
94 	  vert [1] .Red     =  0x0000;
95 	  vert [1] .Green   =  0x0000;
96 	  vert [1] .Blue    =  0xff00;
97 	  vert [1] .Alpha   =  0x0000;
98 
99 	  vert [2] .x       =  100;
100 	  vert [2] .y       =  200;
101 	  vert [2] .Red     =  0xff00;
102 	  vert [2] .Green   =  0x0000;
103 	  vert [2] .Blue    =  0x0000;
104 	  vert [2] .Alpha   =  0x0000;
105 
106 	  vert [3] .x       =  250;
107 	  vert [3] .y       =  300;
108 	  vert [3] .Red     =  0x8000;
109 	  vert [3] .Green   =  0x8000;
110 	  vert [3] .Blue    =  0x0000;
111 	  vert [3] .Alpha   =  0x0000;
112 
113 	  vert [4] .x       =  325;
114 	  vert [4] .y       =  300;
115 	  vert [4] .Red     =  0x0000;
116 	  vert [4] .Green   =  0xff00;
117 	  vert [4] .Blue    =  0x0000;
118 	  vert [4] .Alpha   =  0x0000;
119 
120 	  gTRi[0].Vertex1   = 0;
121 	  gTRi[0].Vertex2   = 1;
122 	  gTRi[0].Vertex3   = 2;
123 
124 	  gTRi[1].Vertex1   = 1;
125 	  gTRi[1].Vertex2   = 2;
126 	  gTRi[1].Vertex3   = 3;
127 
128 	  gTRi[2].Vertex1   = 1;
129 	  gTRi[2].Vertex2   = 3;
130 	  gTRi[2].Vertex3   = 4;
131 
132 	  GdiGradientFill(hDC,vert,5,&gTRi,3,GRADIENT_FILL_TRIANGLE);
133 
134 
135 	  vert [0] .x      = 5;
136 	  vert [0] .y      = 200;
137 	  vert [0] .Red    = 0x0000;
138 	  vert [0] .Green  = 0x0000;
139 	  vert [0] .Blue   = 0x0000;
140 	  vert [0] .Alpha  = 0x0000;
141 
142 	  vert [1] .x      = 90;
143 	  vert [1] .y      = 240;
144 	  vert [1] .Red    = 0x0000;
145 	  vert [1] .Green  = 0x0000;
146 	  vert [1] .Blue   = 0xff00;
147 	  vert [1] .Alpha  = 0x0000;
148 
149 	  vert [2] .x      = 5;
150 	  vert [2] .y      = 245;
151 	  vert [2] .Red    = 0x0000;
152 	  vert [2] .Green  = 0x0000;
153 	  vert [2] .Blue   = 0x0000;
154 	  vert [2] .Alpha  = 0x0000;
155 
156 	  vert [3] .x      = 90;
157 	  vert [3] .y      = 300;
158 	  vert [3] .Red    = 0x0000;
159 	  vert [3] .Green  = 0x0000;
160 	  vert [3] .Blue   = 0xff00;
161 	  vert [3] .Alpha  = 0x0000;
162 
163 	  gRect[0].UpperLeft  = 0;
164 	  gRect[0].LowerRight = 1;
165 
166 	  gRect[1].UpperLeft  = 2;
167 	  gRect[1].LowerRight = 3;
168 
169 	  GdiGradientFill(hDC,vert,4,&gRect[0],1,GRADIENT_FILL_RECT_H);
170 	  GdiGradientFill(hDC,vert,4,&gRect[1],1,GRADIENT_FILL_RECT_V);
171 
172           EndPaint(hWnd, &ps);
173 	  break;
174 	}
175 
176 	case WM_DESTROY:
177 	  PostQuitMessage(0);
178 	  break;
179 
180 	default:
181 	  return DefWindowProc(hWnd, msg, wParam, lParam);
182 	}
183 	return 0;
184 }
185