#include <wx/frame.h>
#endif
+#include <wx/msw/private.h>
+
#include "glcanvas.h"
+wxChar wxGLCanvasClassName[] = wxT("wxGLCanvasClass");
+
+LRESULT WXDLLEXPORT APIENTRY _EXPORT wxWndProc(HWND hWnd, UINT message,
+ WPARAM wParam, LPARAM lParam);
+
/*
* GLContext implementation
*/
wglMakeCurrent((HDC) m_hDC, m_glContext);
}
-wxGLContext::wxGLContext(
- bool isRGB, wxGLCanvas *win,
+wxGLContext::wxGLContext(
+ bool isRGB, wxGLCanvas *win,
const wxPalette& palette,
const wxGLContext *other /* for sharing display lists */
)
wxGLCanvas::wxGLCanvas(wxWindow *parent, wxWindowID id,
const wxPoint& pos, const wxSize& size, long style, const wxString& name,
int *attribList /* not used yet! */, const wxPalette& palette):
- wxScrolledWindow(parent, id, pos, size, style, name)
+ wxScrolledWindow()
{
- m_hDC = (WXHDC) ::GetDC((HWND) GetHWND());
+ m_glContext = (wxGLContext*) NULL;
- SetupPixelFormat();
- SetupPalette(palette);
+ bool ret = Create(parent, id, pos, size, style, name);
+
+ if ( ret )
+ {
+ SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
+ SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
+ }
+
+ m_hDC = (WXHDC) ::GetDC((HWND) GetHWND());
+
+ SetupPixelFormat();
+ SetupPalette(palette);
+
+ m_glContext = new wxGLContext(TRUE, this, palette);
- m_glContext = new wxGLContext(TRUE, this, palette);
}
-wxGLCanvas::wxGLCanvas( wxWindow *parent,
+
+wxGLCanvas::wxGLCanvas( wxWindow *parent,
const wxGLContext *shared, wxWindowID id,
const wxPoint& pos, const wxSize& size, long style, const wxString& name,
- int *attribList, const wxPalette& palette ) :
- wxScrolledWindow(parent, id, pos, size, style, name)
-{
- m_hDC = (WXHDC) ::GetDC((HWND) GetHWND());
+ int *attribList, const wxPalette& palette )
+ : wxScrolledWindow()
+{
+ m_glContext = (wxGLContext*) NULL;
- SetupPixelFormat();
- SetupPalette(palette);
+ bool ret = Create(parent, id, pos, size, style, name);
- m_glContext = new wxGLContext(TRUE, this, palette, shared );
+ if ( ret )
+ {
+ SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
+ SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
+ }
+
+ m_hDC = (WXHDC) ::GetDC((HWND) GetHWND());
+
+ SetupPixelFormat();
+ SetupPalette(palette);
+
+ m_glContext = new wxGLContext(TRUE, this, palette, shared );
}
wxGLCanvas::~wxGLCanvas()
::ReleaseDC((HWND) GetHWND(), (HDC) m_hDC);
}
+// Replaces wxWindow::Create functionality, since we need to use a different window class
+bool wxGLCanvas::Create(wxWindow *parent, wxWindowID id,
+ const wxPoint& pos, const wxSize& size, long style, const wxString& name)
+{
+ static bool 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:
+
+ "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 (!registeredGLCanvasClass)
+ {
+ WNDCLASS wndclass;
+
+ static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS | CS_OWNDC;
+
+ // 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 = styleNormal;
+
+ if ( !RegisterClass(&wndclass) )
+ {
+ wxLogLastError("RegisterClass(wxGLCanvasClass)");
+
+ return FALSE;
+ }
+ registeredGLCanvasClass = TRUE;
+ }
+
+ wxCHECK_MSG( parent, FALSE, wxT("can't create wxWindow without parent") );
+
+ if ( !CreateBase(parent, id, pos, size, style, wxDefaultValidator, name) )
+ return FALSE;
+
+ parent->AddChild(this);
+
+ DWORD msflags = 0;
+ if ( style & wxBORDER )
+ msflags |= WS_BORDER;
+ if ( style & wxTHICK_FRAME )
+ msflags |= WS_THICKFRAME;
+
+ msflags |= WS_CHILD | WS_VISIBLE;
+ if ( style & wxCLIP_CHILDREN )
+ msflags |= WS_CLIPCHILDREN;
+
+ bool want3D;
+ WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D);
+
+ // Even with extended styles, need to combine with WS_BORDER
+ // for them to look right.
+ if ( want3D || (m_windowStyle & wxSIMPLE_BORDER) || (m_windowStyle & wxRAISED_BORDER ) ||
+ (m_windowStyle & wxSUNKEN_BORDER) || (m_windowStyle & wxDOUBLE_BORDER))
+ {
+ msflags |= WS_BORDER;
+ }
+
+ // calculate the value to return from WM_GETDLGCODE handler
+ if ( GetWindowStyleFlag() & wxWANTS_CHARS )
+ {
+ // want everything: i.e. all keys and WM_CHAR message
+ m_lDlgCode = DLGC_WANTARROWS | DLGC_WANTCHARS |
+ DLGC_WANTTAB | DLGC_WANTMESSAGE;
+ }
+
+ MSWCreate(m_windowId, parent, wxGLCanvasClassName, this, NULL,
+ pos.x, pos.y,
+ WidthDefault(size.x), HeightDefault(size.y),
+ msflags, NULL, exStyle);
+
+ return TRUE;
+
+}
+
void wxGLCanvas::SetupPixelFormat() // (HDC hDC)
{
PIXELFORMATDESCRIPTOR pfd = {
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