1 ///////////////////////////////////////////////////////////////////////////////
2 // Name: src/msw/nativewin.cpp
3 // Purpose: wxNativeWindow implementation
4 // Author: Vadim Zeitlin
5 // Created: 2008-03-05
6 // Copyright: (c) 2008 Vadim Zeitlin <vadim@wxwindows.org>
7 // Licence: wxWindows licence
8 ///////////////////////////////////////////////////////////////////////////////
9
10 // ============================================================================
11 // declarations
12 // ============================================================================
13
14 // ----------------------------------------------------------------------------
15 // headers
16 // ----------------------------------------------------------------------------
17
18 // for compilers that support precompilation, includes "wx.h".
19 #include "wx/wxprec.h"
20
21 #ifdef __BORLANDC__
22 #pragma hdrstop
23 #endif
24
25 #ifndef WX_PRECOMP
26 #endif // WX_PRECOMP
27
28 #include "wx/nativewin.h"
29 #include "wx/msw/private.h"
30
31 // ============================================================================
32 // implementation
33 // ============================================================================
34
Create(wxNativeContainerWindowHandle hwnd)35 bool wxNativeContainerWindow::Create(wxNativeContainerWindowHandle hwnd)
36 {
37 if ( !::IsWindow(hwnd) )
38 {
39 // strictly speaking, the fact that IsWindow() returns true doesn't
40 // mean that the window handle is valid -- it could be being deleted
41 // right now, for example
42 //
43 // but if it returns false, the handle is definitely invalid
44 return false;
45 }
46
47 // make this HWND really a wxWindow
48 SubclassWin(hwnd);
49
50 // inherit the other attributes we can from the native HWND
51 AdoptAttributesFromHWND();
52
53 return true;
54 }
55
IsShown() const56 bool wxNativeContainerWindow::IsShown() const
57 {
58 return (IsWindowVisible(static_cast<HWND>(m_hWnd)) != 0);
59 }
60
OnNativeDestroyed()61 void wxNativeContainerWindow::OnNativeDestroyed()
62 {
63 // don't use Close() or even Destroy() here, we really don't want to keep
64 // an object using a no more existing HWND around for longer than necessary
65 delete this;
66 }
67
MSWWindowProc(WXUINT nMsg,WXWPARAM wParam,WXLPARAM lParam)68 WXLRESULT wxNativeContainerWindow::MSWWindowProc(WXUINT nMsg,
69 WXWPARAM wParam,
70 WXLPARAM lParam)
71 {
72 if ( nMsg == WM_DESTROY )
73 {
74 OnNativeDestroyed();
75
76 return 0;
77 }
78
79 return wxTopLevelWindow::MSWWindowProc(nMsg, wParam, lParam);
80 }
81
~wxNativeContainerWindow()82 wxNativeContainerWindow::~wxNativeContainerWindow()
83 {
84 // prevent the base class dtor from destroying the window, it doesn't
85 // belong to us so we should leave it alive
86 DissociateHandle();
87 }
88
89