wxDC::GetHandle support for wxGTK

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72226 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/dc.h

@@ -136,7 +136,8 @@ public:
     virtual void EndPage() { }
 
     virtual GdkWindow* GetGDKWindow() const { return NULL; }
-
+    virtual void* GetHandle() const { return GetGDKWindow(); }
+    
     // base class pure virtuals implemented here
     virtual void DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
     virtual void DoGetSizeMM(int* width, int* height) const;

include/wx/gtk/dcmemory.h

@@ -39,7 +39,8 @@ public:
     // overridden from wxDCImpl
     virtual void DoGetSize( int *width, int *height ) const;
     virtual wxBitmap DoGetAsBitmap(const wxRect *subrect) const;
-
+    virtual void* GetHandle() const;
+    
     // overridden for wxMemoryDC Impl
     virtual void DoSelect(const wxBitmap& bitmap);
 

include/wx/gtk/print.h

@@ -227,7 +227,8 @@ public:
     bool IsOk() const;
 
     virtual void* GetCairoContext() const;
-
+    virtual void* GetHandle() const;
+    
     bool CanDrawBitmap() const { return true; }
     void Clear();
     void SetFont( const wxFont& font );