Clearing a Rectangle

This topic shows you how to use CBitmapContext::Clear() to clear a rectangle to the current brush color.

TRect largeBox(0,0,100,100);
TRect clearBox(20,20,40,40);
    
// draw a cross-hatched box
gc.SetBrushColor(KRgbDarkGray);
gc.SetBrushStyle(CGraphicsContext::ESquareCrossHatchBrush);
gc.DrawRect(largeBox);
    
// clear a small rectangle
gc.SetBrushColor(KRgbGray); // change the brush color
gc.Clear(clearBox);   // clear to brush color

Note: When clearing a rectangle, the brush style is ignored, even if it is TBrushStyle::ENullBrush.