Enable variadic macros for VC9 and later.

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

diff --git a/src/msw/dc.cpp b/src/msw/dc.cpp
index d9f8c91288f27985a69e62be378ebc7ab108f670..c7f3cfa665110f3b1412d31bc160475183d5ca65 100644 (file)
--- a/src/msw/dc.cpp
+++ b/src/msw/dc.cpp
@@ -2442,6 +2442,17 @@ bool wxMSWDCImpl::DoStretchBlit(wxCoord xdest, wxCoord ydest,
             {
                 SET_STRETCH_BLT_MODE(GetHdc());
 
+                // Unlike all the other functions used here (i.e. AlphaBlt(),
+                // MaskBlt(), BitBlt() and StretchBlt()), StretchDIBits() does
+                // not take into account the source DC logical coordinates
+                // automatically as it doesn't even work with the source HDC.
+                // So do this manually to ensure that the coordinates are
+                // interpreted in the same way here as in all the other cases.
+                xsrc = source->LogicalToDeviceX(xsrc);
+                ysrc = source->LogicalToDeviceY(ysrc);
+                srcWidth = source->LogicalToDeviceXRel(srcWidth);
+                srcHeight = source->LogicalToDeviceYRel(srcHeight);
+
                 // Figure out what co-ordinate system we're supposed to specify
                 // ysrc in.
                 const LONG hDIB = ds.dsBmih.biHeight;