+ // NOTE: although the MSW port allows for negative pixel size heights,
+ // other ports don't and since it's a very useful feature assert
+ // here if we get a negative height:
+ wxCHECK_RET( pixelSize.GetWidth() >= 0 && pixelSize.GetHeight() > 0,
+ "Negative values for the pixel size or zero pixel height are not allowed" );
+