X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/faa9a600f4ee45757039be01acb0865d1bbae957..65751a0ee7a4cfaef9f459c29bfd67f5be6d893b:/src/gtk1/dcclient.cpp

diff --git a/src/gtk1/dcclient.cpp b/src/gtk1/dcclient.cpp
index 498f19623a..9fa41bf7f4 100644
--- a/src/gtk1/dcclient.cpp
+++ b/src/gtk1/dcclient.cpp
@@ -1143,8 +1143,11 @@ bool wxWindowDCImpl::DoBlit( wxCoord xdest, wxCoord ydest,
     xsrc = source->LogicalToDeviceX(xsrc);
     ysrc = source->LogicalToDeviceY(ysrc);
 
-    wxClientDCImpl *srcDC = (wxClientDCImpl*)source->GetImpl();
-    wxMemoryDCImpl *memDC = (wxMemoryDCImpl*)source;
+    wxWindowDCImpl *srcDC = wxDynamicCast(source->GetImpl(), wxWindowDCImpl);
+    wxCHECK_MSG( srcDC, false, "source must be a window DC" );
+
+    // FIXME: this cast is not always valid, see the code using m_isMemDC
+    wxMemoryDCImpl *memDC = wx_static_cast(wxMemoryDCImpl *, srcDC);
 
     bool use_bitmap_method = false;
     bool is_mono = false;
@@ -2018,7 +2021,7 @@ void wxWindowDCImpl::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, w
     gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
 }
 
-void wxWindowDCImpl::DoSetClippingRegionAsRegion( const wxRegion &region  )
+void wxWindowDCImpl::DoSetDeviceClippingRegion( const wxRegion &region  )
 {
     wxCHECK_RET( IsOk(), wxT("invalid window dc") );