don't use deprecated symbols

[wxWidgets.git] / src / msw / glcanvas.cpp

diff --git a/src/msw/glcanvas.cpp b/src/msw/glcanvas.cpp
index d6d33ffab7e5b002019a4e440f53ff9b8900a3da..c5a0523d00ca861c6960996ee35ecb72fcff9747 100644 (file)
--- a/src/msw/glcanvas.cpp
+++ b/src/msw/glcanvas.cpp
@@ -1,15 +1,15 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        glcanvas.cpp
+// Name:        src/msw/glcanvas.cpp

 // Purpose:     wxGLCanvas, for using OpenGL with wxWindows under MS Windows
 // Author:      Julian Smart
 // Modified by:
 // Created:     04/01/98
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart
 // Purpose:     wxGLCanvas, for using OpenGL with wxWindows under MS Windows
 // Author:      Julian Smart
 // Modified by:
 // Created:     04/01/98
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart

-// Licence:       wxWindows licence
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 /////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)

 #pragma implementation "glcanvas.h"
 #endif
 
 #pragma implementation "glcanvas.h"
 #endif
 


@@ -19,19 +19,46 @@
 #pragma hdrstop
 #endif
 
 #pragma hdrstop
 #endif
 

-#include <wx/setup.h>
-

 #if wxUSE_GLCANVAS
 
 #ifndef WX_PRECOMP
 #if wxUSE_GLCANVAS
 
 #ifndef WX_PRECOMP

-#include <wx/frame.h>
+    #include "wx/frame.h"
+    #include "wx/settings.h"
+    #include "wx/intl.h"
+    #include "wx/log.h"
+    #include "wx/app.h"

 #endif
 
 #endif
 

-#include <wx/msw/private.h>
-#include <wx/settings.h>
-#include <wx/log.h>
+#include "wx/msw/private.h"
+
+// DLL options compatibility check:
+#include "wx/build.h"
+WX_CHECK_BUILD_OPTIONS("wxGL")
+
+#include "wx/glcanvas.h"
+
+/*
+  The following two compiler directives are specific to the Microsoft Visual
+  C++ family of compilers
+
+  Fundementally what they do is instruct the linker to use these two libraries
+  for the resolution of symbols. In essence, this is the equivalent of adding
+  these two libraries to either the Makefile or project file.
+
+  This is NOT a recommended technique, and certainly is unlikely to be used
+  anywhere else in wxWindows given it is so specific to not only wxMSW, but
+  also the VC compiler. However, in the case of opengl support, it's an
+  applicable technique as opengl is optional in setup.h This code (wrapped by
+  wxUSE_GLCANVAS), now allows opengl support to be added purely by modifying
+  setup.h rather than by having to modify either the project or DSP fle.
+
+  See MSDN for further information on the exact usage of these commands.
+*/
+#ifdef _MSC_VER
+#  pragma comment( lib, "opengl32" )
+#  pragma comment( lib, "glu32" )
+#endif

 
 

-#include <wx/glcanvas.h>

 
 static const wxChar *wxGLCanvasClassName = wxT("wxGLCanvasClass");
 static const wxChar *wxGLCanvasClassNameNoRedraw = wxT("wxGLCanvasClassNR");
 
 static const wxChar *wxGLCanvasClassName = wxT("wxGLCanvasClass");
 static const wxChar *wxGLCanvasClassNameNoRedraw = wxT("wxGLCanvasClassNR");


@@ -43,7 +70,7 @@ LRESULT WXDLLEXPORT APIENTRY _EXPORT wxWndProc(HWND hWnd, UINT message,
  * GLContext implementation
  */
 
  * GLContext implementation
  */
 

-wxGLContext::wxGLContext(bool isRGB, wxGLCanvas *win, const wxPalette& palette)
+wxGLContext::wxGLContext(bool WXUNUSED(isRGB), wxGLCanvas *win, const wxPalette& WXUNUSED(palette))

 {
   m_window = win;
 
 {
   m_window = win;
 


@@ -56,8 +83,8 @@ wxGLContext::wxGLContext(bool isRGB, wxGLCanvas *win, const wxPalette& palette)
 }
 
 wxGLContext::wxGLContext(
 }
 
 wxGLContext::wxGLContext(

-               bool isRGB, wxGLCanvas *win,
-               const wxPalette& palette,
+               bool WXUNUSED(isRGB), wxGLCanvas *win,
+               const wxPalette& WXUNUSED(palette),

                const wxGLContext *other  /* for sharing display lists */
              )
 {
                const wxGLContext *other  /* for sharing display lists */
              )
 {


@@ -105,19 +132,16 @@ void wxGLContext::SetCurrent()
   */
 }
 
   */
 }
 

-void wxGLContext::SetColour(const char *colour)
+void wxGLContext::SetColour(const wxChar *colour)

 {
 {

-  float r = 0.0;
-  float g = 0.0;
-  float b = 0.0;
-  wxColour *col = wxTheColourDatabase->FindColour(colour);
-  if (col)
-  {
-    r = (float)(col->Red()/256.0);
-    g = (float)(col->Green()/256.0);
-    b = (float)(col->Blue()/256.0);
-    glColor3f( r, g, b);
-  }
+    wxColour col = wxTheColourDatabase->Find(colour);
+    if (col.Ok())
+    {
+        float r = (float)(col.Red()/256.0);
+        float g = (float)(col.Green()/256.0);
+        float b = (float)(col.Blue()/256.0);
+        glColor3f( r, g, b);
+    }

 }
 
 
 }
 
 


@@ -125,9 +149,9 @@ void wxGLContext::SetColour(const char *colour)
  * wxGLCanvas implementation
  */
 
  * wxGLCanvas implementation
  */
 

-IMPLEMENT_CLASS(wxGLCanvas, wxScrolledWindow)
+IMPLEMENT_CLASS(wxGLCanvas, wxWindow)

 
 

-BEGIN_EVENT_TABLE(wxGLCanvas, wxScrolledWindow)
+BEGIN_EVENT_TABLE(wxGLCanvas, wxWindow)

     EVT_SIZE(wxGLCanvas::OnSize)
     EVT_PALETTE_CHANGED(wxGLCanvas::OnPaletteChanged)
     EVT_QUERY_NEW_PALETTE(wxGLCanvas::OnQueryNewPalette)
     EVT_SIZE(wxGLCanvas::OnSize)
     EVT_PALETTE_CHANGED(wxGLCanvas::OnPaletteChanged)
     EVT_QUERY_NEW_PALETTE(wxGLCanvas::OnQueryNewPalette)


@@ -135,7 +159,7 @@ END_EVENT_TABLE()
 
 wxGLCanvas::wxGLCanvas(wxWindow *parent, wxWindowID id,
     const wxPoint& pos, const wxSize& size, long style, const wxString& name,
 
 wxGLCanvas::wxGLCanvas(wxWindow *parent, wxWindowID id,
     const wxPoint& pos, const wxSize& size, long style, const wxString& name,

-    int *attribList, const wxPalette& palette) : wxScrolledWindow()
+    int *attribList, const wxPalette& palette) : wxWindow()

 {
   m_glContext = (wxGLContext*) NULL;
 
 {
   m_glContext = (wxGLContext*) NULL;
 


@@ -143,8 +167,8 @@ wxGLCanvas::wxGLCanvas(wxWindow *parent, wxWindowID id,
 
   if ( ret )
   {
 
   if ( ret )
   {

-    SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
-    SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
+    SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
+    SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));

   }
 
   m_hDC = (WXHDC) ::GetDC((HWND) GetHWND());
   }
 
   m_hDC = (WXHDC) ::GetDC((HWND) GetHWND());


@@ -159,7 +183,7 @@ 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 )
               const wxGLContext *shared, wxWindowID id,
               const wxPoint& pos, const wxSize& size, long style, const wxString& name,
               int *attribList, const wxPalette& palette )

-  : wxScrolledWindow()
+  : wxWindow()

 {
   m_glContext = (wxGLContext*) NULL;
 
 {
   m_glContext = (wxGLContext*) NULL;
 


@@ -167,8 +191,8 @@ wxGLCanvas::wxGLCanvas( wxWindow *parent,
 
   if ( ret )
   {
 
   if ( ret )
   {

-    SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
-    SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
+    SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
+    SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));

   }
 
   m_hDC = (WXHDC) ::GetDC((HWND) GetHWND());
   }
 
   m_hDC = (WXHDC) ::GetDC((HWND) GetHWND());


@@ -184,7 +208,7 @@ wxGLCanvas::wxGLCanvas( wxWindow *parent,
 wxGLCanvas::wxGLCanvas( wxWindow *parent, const wxGLCanvas *shared, wxWindowID id,
                         const wxPoint& pos, const wxSize& size, long style, const wxString& name,
                         int *attribList, const wxPalette& palette ):
 wxGLCanvas::wxGLCanvas( wxWindow *parent, const wxGLCanvas *shared, wxWindowID id,
                         const wxPoint& pos, const wxSize& size, long style, const wxString& name,
                         int *attribList, const wxPalette& palette ):

-  wxScrolledWindow()
+  wxWindow()

 {
   m_glContext = (wxGLContext*) NULL;
 
 {
   m_glContext = (wxGLContext*) NULL;
 


@@ -192,8 +216,8 @@ wxGLCanvas::wxGLCanvas( wxWindow *parent, const wxGLCanvas *shared, wxWindowID i
 
   if ( ret )
   {
 
   if ( ret )
   {

-    SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
-    SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
+    SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
+    SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));

   }
 
   m_hDC = (WXHDC) ::GetDC((HWND) GetHWND());
   }
 
   m_hDC = (WXHDC) ::GetDC((HWND) GetHWND());


@@ -278,7 +302,7 @@ bool wxGLCanvas::Create(wxWindow *parent,
     {
         wxLogLastError(wxT("RegisterClass(wxGLCanvasClassNameNoRedraw)"));
 
     {
         wxLogLastError(wxT("RegisterClass(wxGLCanvasClassNameNoRedraw)"));
 

-        ::UnregisterClass(wxGLCanvasClassName, wxhInstance());
+        ::UnregisterClass(wxGLCanvasClassName, wxhInstance);

 
         return FALSE;
     }
 
         return FALSE;
     }


@@ -294,10 +318,6 @@ bool wxGLCanvas::Create(wxWindow *parent,
   parent->AddChild(this);
 
   DWORD msflags = 0;
   parent->AddChild(this);
 
   DWORD msflags = 0;

-  if ( style & wxBORDER )
-    msflags |= WS_BORDER;
-  if ( style & wxTHICK_FRAME )
-    msflags |= WS_THICKFRAME;

 
   /*
   A general rule with OpenGL and Win32 is that any window that will have a
 
   /*
   A general rule with OpenGL and Win32 is that any window that will have a


@@ -306,26 +326,9 @@ bool wxGLCanvas::Create(wxWindow *parent,
   books that contain the wgl function descriptions.
   */
 
   books that contain the wgl function descriptions.
   */
 

+  WXDWORD exStyle = 0;

   msflags |= WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
   msflags |= WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | 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;
-  }
+  msflags |= MSWGetStyle(style, & exStyle) ;

 
   return MSWCreate(wxGLCanvasClassName, NULL, pos, size, msflags, exStyle);
 }
 
   return MSWCreate(wxGLCanvasClassName, NULL, pos, size, msflags, exStyle);
 }


@@ -351,11 +354,11 @@ static void AdjustPFDForAttributes(PIXELFORMATDESCRIPTOR& pfd, int *attribList)
         case WX_GL_LEVEL:
           // this member looks like it may be obsolete
           if (attribList[arg] > 0) {
         case WX_GL_LEVEL:
           // this member looks like it may be obsolete
           if (attribList[arg] > 0) {

-            pfd.iLayerType = PFD_OVERLAY_PLANE;
+            pfd.iLayerType = (BYTE)PFD_OVERLAY_PLANE;

           } else if (attribList[arg] < 0) {
           } else if (attribList[arg] < 0) {

-            pfd.iLayerType = PFD_UNDERLAY_PLANE;
+            pfd.iLayerType = (BYTE)PFD_UNDERLAY_PLANE;

           } else {
           } else {

-            pfd.iLayerType = PFD_MAIN_PLANE;
+            pfd.iLayerType = (BYTE)PFD_MAIN_PLANE;

           }
           arg++;
           break;
           }
           arg++;
           break;


@@ -408,7 +411,6 @@ static void AdjustPFDForAttributes(PIXELFORMATDESCRIPTOR& pfd, int *attribList)
 
 void wxGLCanvas::SetupPixelFormat(int *attribList) // (HDC hDC)
 {
 
 void wxGLCanvas::SetupPixelFormat(int *attribList) // (HDC hDC)
 {

-  int pixelFormat;

   PIXELFORMATDESCRIPTOR pfd = {
         sizeof(PIXELFORMATDESCRIPTOR),    /* size */
         1,                /* version */
   PIXELFORMATDESCRIPTOR pfd = {
         sizeof(PIXELFORMATDESCRIPTOR),    /* size */
         1,                /* version */


@@ -432,13 +434,13 @@ void wxGLCanvas::SetupPixelFormat(int *attribList) // (HDC hDC)
 
   AdjustPFDForAttributes(pfd, attribList);
 
 
   AdjustPFDForAttributes(pfd, attribList);
 

-  pixelFormat = ChoosePixelFormat((HDC) m_hDC, &pfd);
+  int pixelFormat = ChoosePixelFormat((HDC) m_hDC, &pfd);

   if (pixelFormat == 0) {
   if (pixelFormat == 0) {

-    wxLogWarning(_("ChoosePixelFormat failed."));
+    wxLogLastError(_T("ChoosePixelFormat"));

   }
   else {
   }
   else {

-    if (SetPixelFormat((HDC) m_hDC, pixelFormat, &pfd) != TRUE) {
-      wxLogWarning(_("SetPixelFormat failed."));
+    if ( !::SetPixelFormat((HDC) m_hDC, pixelFormat, &pfd) ) {
+      wxLogLastError(_T("SetPixelFormat"));

     }
   }
 }
     }
   }
 }


@@ -520,21 +522,8 @@ void wxGLCanvas::SwapBuffers()
     m_glContext->SwapBuffers();
 }
 
     m_glContext->SwapBuffers();
 }
 

-void wxGLCanvas::OnSize(wxSizeEvent& event)
+void wxGLCanvas::OnSize(wxSizeEvent& WXUNUSED(event))

 {
 {

-  int width, height;
-  GetClientSize(& width, & height);
-
-  if (m_glContext)
-  {
-    m_glContext->SetCurrent();
-
-    glViewport(0, 0, (GLint)width, (GLint)height);
-    glMatrixMode(GL_PROJECTION);
-    glLoadIdentity();
-    glFrustum( -1.0, 1.0, -1.0, 1.0, 5.0, 15.0 );
-    glMatrixMode(GL_MODELVIEW);
-  }

 }
 
 void wxGLCanvas::SetCurrent()
 }
 
 void wxGLCanvas::SetCurrent()


@@ -545,7 +534,7 @@ void wxGLCanvas::SetCurrent()
   }
 }
 
   }
 }
 

-void wxGLCanvas::SetColour(const char *colour)
+void wxGLCanvas::SetColour(const wxChar *colour)

 {
   if (m_glContext)
     m_glContext->SetColour(colour);
 {
   if (m_glContext)
     m_glContext->SetColour(colour);


@@ -584,11 +573,11 @@ void wxGLCanvas::OnPaletteChanged(wxPaletteChangedEvent& event)
 /* Give extensions proper function names. */
 
 /* EXT_vertex_array */
 /* Give extensions proper function names. */
 
 /* EXT_vertex_array */

-void glArrayElementEXT(GLint i)
+void glArrayElementEXT(GLint WXUNUSED(i))

 {
 }
 
 {
 }
 

-void glColorPointerEXT(GLint size, GLenum type, GLsizei stride, GLsizei count, const GLvoid *pointer)
+void glColorPointerEXT(GLint WXUNUSED(size), GLenum WXUNUSED(type), GLsizei WXUNUSED(stride), GLsizei WXUNUSED(count), const GLvoid *WXUNUSED(pointer))

 {
 }
 
 {
 }
 


@@ -607,15 +596,15 @@ void glDrawArraysEXT(GLenum mode, GLint first, GLsizei count)
 #endif
 }
 
 #endif
 }
 

-void glEdgeFlagPointerEXT(GLsizei stride, GLsizei count, const GLboolean *pointer)
+void glEdgeFlagPointerEXT(GLsizei WXUNUSED(stride), GLsizei WXUNUSED(count), const GLboolean *WXUNUSED(pointer))

 {
 }
 
 {
 }
 

-void glGetPointervEXT(GLenum pname, GLvoid* *params)
+void glGetPointervEXT(GLenum WXUNUSED(pname), GLvoid* *WXUNUSED(params))

 {
 }
 
 {
 }
 

-void glIndexPointerEXT(GLenum type, GLsizei stride, GLsizei count, const GLvoid *pointer)
+void glIndexPointerEXT(GLenum WXUNUSED(type), GLsizei WXUNUSED(stride), GLsizei WXUNUSED(count), const GLvoid *WXUNUSED(pointer))

 {
 }
 
 {
 }
 


@@ -634,7 +623,7 @@ void glNormalPointerEXT(GLenum type, GLsizei stride, GLsizei count, const GLvoid
 #endif
 }
 
 #endif
 }
 

-void glTexCoordPointerEXT(GLint size, GLenum type, GLsizei stride, GLsizei count, const GLvoid *pointer)
+void glTexCoordPointerEXT(GLint WXUNUSED(size), GLenum WXUNUSED(type), GLsizei WXUNUSED(stride), GLsizei WXUNUSED(count), const GLvoid *WXUNUSED(pointer))

 {
 }
 
 {
 }
 


@@ -653,33 +642,33 @@ void glVertexPointerEXT(GLint size, GLenum type, GLsizei stride, GLsizei count,
 }
 
 /* EXT_color_subtable */
 }
 
 /* EXT_color_subtable */

-void glColorSubtableEXT(GLenum target, GLsizei start, GLsizei count, GLenum format, GLenum type, const GLvoid *table)
+void glColorSubtableEXT(GLenum WXUNUSED(target), GLsizei WXUNUSED(start), GLsizei WXUNUSED(count), GLenum WXUNUSED(format), GLenum WXUNUSED(type), const GLvoid *WXUNUSED(table))

 {
 }
 
 /* EXT_color_table */
 {
 }
 
 /* EXT_color_table */

-void glColorTableEXT(GLenum target, GLenum internalformat, GLsizei width, GLenum format, GLenum type, const GLvoid *table)
+void glColorTableEXT(GLenum WXUNUSED(target), GLenum WXUNUSED(internalformat), GLsizei WXUNUSED(width), GLenum WXUNUSED(format), GLenum WXUNUSED(type), const GLvoid *WXUNUSED(table))

 {
 }
 
 {
 }
 

-void glCopyColorTableEXT(GLenum target, GLenum internalformat, GLint x, GLint y, GLsizei width)
+void glCopyColorTableEXT(GLenum WXUNUSED(target), GLenum WXUNUSED(internalformat), GLint WXUNUSED(x), GLint WXUNUSED(y), GLsizei WXUNUSED(width))

 {
 }
 
 {
 }
 

-void glGetColorTableEXT(GLenum target, GLenum format, GLenum type, GLvoid *table)
+void glGetColorTableEXT(GLenum WXUNUSED(target), GLenum WXUNUSED(format), GLenum WXUNUSED(type), GLvoid *WXUNUSED(table))

 {
 }
 
 {
 }
 

-void glGetColorTableParamaterfvEXT(GLenum target, GLenum pname, GLfloat *params)
+void glGetColorTableParamaterfvEXT(GLenum WXUNUSED(target), GLenum WXUNUSED(pname), GLfloat *WXUNUSED(params))

 {
 }
 
 {
 }
 

-void glGetColorTavleParameterivEXT(GLenum target, GLenum pname, GLint *params)
+void glGetColorTavleParameterivEXT(GLenum WXUNUSED(target), GLenum WXUNUSED(pname), GLint *WXUNUSED(params))

 {
 }
 
 /* SGI_compiled_vertex_array */
 {
 }
 
 /* SGI_compiled_vertex_array */

-void glLockArraysSGI(GLint first, GLsizei count)
+void glLockArraysSGI(GLint WXUNUSED(first), GLsizei WXUNUSED(count))

 {
 }
 
 {
 }
 


@@ -689,26 +678,26 @@ void glUnlockArraysSGI()
 
 
 /* SGI_cull_vertex */
 
 
 /* SGI_cull_vertex */

-void glCullParameterdvSGI(GLenum pname, GLdouble* params)
+void glCullParameterdvSGI(GLenum WXUNUSED(pname), GLdouble* WXUNUSED(params))

 {
 }
 
 {
 }
 

-void glCullParameterfvSGI(GLenum pname, GLfloat* params)
+void glCullParameterfvSGI(GLenum WXUNUSED(pname), GLfloat* WXUNUSED(params))

 {
 }
 
 /* SGI_index_func */
 {
 }
 
 /* SGI_index_func */

-void glIndexFuncSGI(GLenum func, GLclampf ref)
+void glIndexFuncSGI(GLenum WXUNUSED(func), GLclampf WXUNUSED(ref))

 {
 }
 
 /* SGI_index_material */
 {
 }
 
 /* SGI_index_material */

-void glIndexMaterialSGI(GLenum face, GLenum mode)
+void glIndexMaterialSGI(GLenum WXUNUSED(face), GLenum WXUNUSED(mode))

 {
 }
 
 /* WIN_swap_hint */
 {
 }
 
 /* WIN_swap_hint */

-void glAddSwapHintRectWin(GLint x, GLint y, GLsizei width, GLsizei height)
+void glAddSwapHintRectWin(GLint WXUNUSED(x), GLint WXUNUSED(y), GLsizei WXUNUSED(width), GLsizei WXUNUSED(height))

 {
 }
 
 {
 }
 


@@ -746,7 +735,7 @@ bool wxGLApp::InitGLVisual(int *attribList)
   AdjustPFDForAttributes(pfd, attribList);
 
   // use DC for whole (root) screen, since no windows have yet been created
   AdjustPFDForAttributes(pfd, attribList);
 
   // use DC for whole (root) screen, since no windows have yet been created

-  pixelFormat = ChoosePixelFormat((HDC) ::GetDC(NULL), &pfd);
+  pixelFormat = ChoosePixelFormat(ScreenHDC(), &pfd);

 
   if (pixelFormat == 0) {
     wxLogError(_("Failed to initialize OpenGL"));
 
   if (pixelFormat == 0) {
     wxLogError(_("Failed to initialize OpenGL"));