// creating and saving icons is not supported
     virtual bool Create( wxGDIImage* WXUNUSED(pImage)
-                        ,void*       WXUNUSED(pData)
+                        ,const void* WXUNUSED(pData)
                         ,long        WXUNUSED(lFlags)
                         ,int         WXUNUSED(nWidth)
                         ,int         WXUNUSED(nHeight)
     return true;
 }
 
-WXHANDLE wxGDIImage::GetResourceHandle()
+WXHANDLE wxGDIImage::GetResourceHandle() const
 {
     return GetHandle();
 }