Fix for mistake with const for non pointer/reference with corrections in documentation.

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

diff --git a/src/gtk/glcanvas.cpp b/src/gtk/glcanvas.cpp
index 73c12ca203bc6c9cd391859808ce6f150f702b7b..688402fd9991ec5598bbd9ce09dd20bdda661284 100644 (file)
--- a/src/gtk/glcanvas.cpp
+++ b/src/gtk/glcanvas.cpp
@@ -9,10 +9,6 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-#pragma implementation "glcanvas.h"
-#endif
-
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
@@ -397,15 +393,41 @@ bool wxGLCanvas::Create( wxWindow *parent,
     m_vi = vi;  // save for later use
 
     wxCHECK_MSG( m_vi, FALSE, _T("required visual couldn't be found") );
-    GdkVisual *visual = gdkx_visual_get( vi->visualid );
-    GdkColormap *colormap = gdk_colormap_new( visual, TRUE );
+    GdkVisual *visual;
+    GdkColormap *colormap;
+
+    // MR: This needs a fix for lower gtk+ versions too. Might need to rethink logic (FIXME)
+#if defined(__WXGTK20__) && GTK_CHECK_VERSION(2,2,0)
+    if (!gtk_check_version(2,2,0))
+    {
+        wxWindow::Create( parent, id, pos, size, style, name );
+
+        m_glWidget = m_wxwindow;
+
+        GdkScreen *screen = gtk_widget_get_screen( m_glWidget );
+        colormap = gdk_screen_get_default_colormap(screen);
+        visual = gdk_colormap_get_visual(colormap);
+
+        if (GDK_VISUAL_XVISUAL(visual)->visualid != vi->visualid)
+        {
+            visual = gdk_x11_screen_lookup_visual( screen, vi->visualid );
+            colormap = gdk_colormap_new(visual, FALSE);
+        }
 
-    gtk_widget_push_colormap( colormap );
-    gtk_widget_push_visual( visual );
+        gtk_widget_set_colormap( m_glWidget, colormap );
+    }
+    else
+#endif
+    {
+        visual = gdkx_visual_get( vi->visualid );
+        colormap = gdk_colormap_new( visual, TRUE );
 
-    wxWindow::Create( parent, id, pos, size, style, name );
+        gtk_widget_push_colormap( colormap );
+        gtk_widget_push_visual( visual );
 
-    m_glWidget = m_wxwindow;
+        wxWindow::Create( parent, id, pos, size, style, name );
+        m_glWidget = m_wxwindow;
+    }
 
 #ifdef __WXGTK20__
     gtk_widget_set_double_buffered( m_glWidget, FALSE );
@@ -430,8 +452,13 @@ bool wxGLCanvas::Create( wxWindow *parent,
     gtk_signal_connect( GTK_OBJECT(m_widget), "size_allocate",
         GTK_SIGNAL_FUNC(gtk_glcanvas_size_callback), (gpointer)this );
 
-    gtk_widget_pop_visual();
-    gtk_widget_pop_colormap();
+#ifdef __WXGTK20__
+    if (gtk_check_version(2,2,0) != NULL)
+#endif
+    {
+        gtk_widget_pop_visual();
+        gtk_widget_pop_colormap();
+    }
 
     // if our parent window is already visible, we had been realized before we
     // connected to the "realize" signal and hence our m_glContext hasn't been