#include "wx/app.h"
#endif
+#include "wx/module.h"
+
#include "wx/msw/private.h"
// DLL options compatibility check:
LRESULT WXDLLEXPORT APIENTRY _EXPORT wxWndProc(HWND hWnd, UINT message,
WPARAM wParam, LPARAM lParam);
+// ----------------------------------------------------------------------------
+// wxGLModule is responsible for unregistering wxGLCanvasClass Windows class
+// ----------------------------------------------------------------------------
+
+class wxGLModule : public wxModule
+{
+public:
+ bool OnInit() { return true; }
+ void OnExit() { UnregisterClasses(); }
+
+ // register the GL classes if not done yet, return true if ok, false if
+ // registration failed
+ static bool RegisterClasses();
+
+ // unregister the classes, done automatically on program termination
+ static void UnregisterClasses();
+
+private:
+ // wxGLCanvas is only used from the main thread so this is MT-ok
+ static bool ms_registeredGLClasses;
+
+ DECLARE_DYNAMIC_CLASS(wxGLModule)
+};
+
+IMPLEMENT_DYNAMIC_CLASS(wxGLModule, wxModule)
+
+bool wxGLModule::ms_registeredGLClasses = false;
+
+/* static */
+bool wxGLModule::RegisterClasses()
+{
+ if (ms_registeredGLClasses)
+ return true;
+
+ // We have to register a special window class because we need the CS_OWNDC
+ // style for GLCanvas.
+
+ /*
+ From Angel Popov <jumpo@bitex.com>
+
+ Here are two snips from a dicussion in the OpenGL Gamedev list that explains
+ how this problem can be fixed:
+
+ "There are 5 common DCs available in Win95. These are aquired when you call
+ GetDC or GetDCEx from a window that does _not_ have the OWNDC flag.
+ OWNDC flagged windows do not get their DC from the common DC pool, the issue
+ is they require 800 bytes each from the limited 64Kb local heap for GDI."
+
+ "The deal is, if you hold onto one of the 5 shared DC's too long (as GL apps
+ do), Win95 will actually "steal" it from you. MakeCurrent fails,
+ apparently, because Windows re-assigns the HDC to a different window. The
+ only way to prevent this, the only reliable means, is to set CS_OWNDC."
+ */
+
+ WNDCLASS wndclass;
+
+ // the fields which are common to all classes
+ wndclass.lpfnWndProc = (WNDPROC)wxWndProc;
+ wndclass.cbClsExtra = 0;
+ wndclass.cbWndExtra = sizeof( DWORD ); // VZ: what is this DWORD used for?
+ wndclass.hInstance = wxhInstance;
+ wndclass.hIcon = (HICON) NULL;
+ wndclass.hCursor = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
+ wndclass.lpszMenuName = NULL;
+
+ // Register the GLCanvas class name
+ wndclass.hbrBackground = (HBRUSH)NULL;
+ wndclass.lpszClassName = wxGLCanvasClassName;
+ wndclass.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS | CS_OWNDC;
+
+ if ( !::RegisterClass(&wndclass) )
+ {
+ wxLogLastError(wxT("RegisterClass(wxGLCanvasClass)"));
+ return false;
+ }
+
+ // Register the GLCanvas class name for windows which don't do full repaint
+ // on resize
+ wndclass.lpszClassName = wxGLCanvasClassNameNoRedraw;
+ wndclass.style &= ~(CS_HREDRAW | CS_VREDRAW);
+
+ if ( !::RegisterClass(&wndclass) )
+ {
+ wxLogLastError(wxT("RegisterClass(wxGLCanvasClassNameNoRedraw)"));
+
+ ::UnregisterClass(wxGLCanvasClassName, wxhInstance);
+
+ return false;
+ }
+
+ ms_registeredGLClasses = true;
+
+ return true;
+}
+
+/* static */
+void wxGLModule::UnregisterClasses()
+{
+ // we need to unregister the classes in case we're in a DLL which is
+ // unloaded and then loaded again because if we don't, the registration is
+ // going to fail in wxGLCanvas::Create() the next time we're loaded
+ if ( ms_registeredGLClasses )
+ {
+ ::UnregisterClass(wxGLCanvasClassName, wxhInstance);
+ ::UnregisterClass(wxGLCanvasClassNameNoRedraw, wxhInstance);
+
+ ms_registeredGLClasses = false;
+ }
+}
+
/*
* GLContext implementation
*/
wxGLCanvas::~wxGLCanvas()
{
- if (m_glContext)
- delete m_glContext;
+ delete m_glContext;
::ReleaseDC((HWND) GetHWND(), (HDC) m_hDC);
}
long style,
const wxString& name)
{
- static bool s_registeredGLCanvasClass = false;
-
- // We have to register a special window class because we need
- // the CS_OWNDC style for GLCanvas.
-
- /*
- From Angel Popov <jumpo@bitex.com>
-
- Here are two snips from a dicussion in the OpenGL Gamedev list that explains
- how this problem can be fixed:
+ wxCHECK_MSG( parent, false, wxT("can't create wxWindow without parent") );
- "There are 5 common DCs available in Win95. These are aquired when you call
- GetDC or GetDCEx from a window that does _not_ have the OWNDC flag.
- OWNDC flagged windows do not get their DC from the common DC pool, the issue
- is they require 800 bytes each from the limited 64Kb local heap for GDI."
-
- "The deal is, if you hold onto one of the 5 shared DC's too long (as GL apps
- do), Win95 will actually "steal" it from you. MakeCurrent fails,
- apparently, because Windows re-assigns the HDC to a different window. The
- only way to prevent this, the only reliable means, is to set CS_OWNDC."
- */
-
- if (!s_registeredGLCanvasClass)
- {
- WNDCLASS wndclass;
-
- // the fields which are common to all classes
- wndclass.lpfnWndProc = (WNDPROC)wxWndProc;
- wndclass.cbClsExtra = 0;
- wndclass.cbWndExtra = sizeof( DWORD ); // VZ: what is this DWORD used for?
- wndclass.hInstance = wxhInstance;
- wndclass.hIcon = (HICON) NULL;
- wndclass.hCursor = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
- wndclass.lpszMenuName = NULL;
-
- // Register the GLCanvas class name
- wndclass.hbrBackground = (HBRUSH)NULL;
- wndclass.lpszClassName = wxGLCanvasClassName;
- wndclass.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS | CS_OWNDC;
-
- if ( !::RegisterClass(&wndclass) )
- {
- wxLogLastError(wxT("RegisterClass(wxGLCanvasClass)"));
- return false;
- }
-
- // Register the GLCanvas class name for windows which don't do full repaint
- // on resize
- wndclass.lpszClassName = wxGLCanvasClassNameNoRedraw;
- wndclass.style &= ~(CS_HREDRAW | CS_VREDRAW);
-
- if ( !::RegisterClass(&wndclass) )
+ if ( !wxGLModule::RegisterClasses() )
{
- wxLogLastError(wxT("RegisterClass(wxGLCanvasClassNameNoRedraw)"));
-
- ::UnregisterClass(wxGLCanvasClassName, wxhInstance);
+ wxLogError(_("Failed to register OpenGL window class."));
return false;
}
- s_registeredGLCanvasClass = true;
- }
-
- wxCHECK_MSG( parent, false, wxT("can't create wxWindow without parent") );
-
- if ( !CreateBase(parent, id, pos, size, style, wxDefaultValidator, name) )
- return false;
+ if ( !CreateBase(parent, id, pos, size, style, wxDefaultValidator, name) )
+ return false;
- parent->AddChild(this);
+ parent->AddChild(this);
- DWORD msflags = 0;
+ DWORD msflags = 0;
- /*
- A general rule with OpenGL and Win32 is that any window that will have a
- HGLRC built for it must have two flags: WS_CLIPCHILDREN & WS_CLIPSIBLINGS.
- You can find references about this within the knowledge base and most OpenGL
- books that contain the wgl function descriptions.
- */
+ /*
+ A general rule with OpenGL and Win32 is that any window that will have a
+ HGLRC built for it must have two flags: WS_CLIPCHILDREN & WS_CLIPSIBLINGS.
+ You can find references about this within the knowledge base and most OpenGL
+ books that contain the wgl function descriptions.
+ */
- WXDWORD exStyle = 0;
- msflags |= WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
- msflags |= MSWGetStyle(style, & exStyle) ;
+ WXDWORD exStyle = 0;
+ msflags |= WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
+ msflags |= MSWGetStyle(style, & exStyle) ;
- return MSWCreate(wxGLCanvasClassName, NULL, pos, size, msflags, exStyle);
+ return MSWCreate(wxGLCanvasClassName, NULL, pos, size, msflags, exStyle);
}
static void AdjustPFDForAttributes(PIXELFORMATDESCRIPTOR& pfd, int *attribList)
projects / wxWidgets.git / blobdiff