DrawTiledBitmap
void DrawTiledBitmap(const BBitmap* aBitmap,
DrawTiledBitmap(fBitmap, BRect(10, 10, 60, 60), BPoint(1, 1));
DrawTiledBitmap(fBitmap, BRect(10, 60, 60, 110), BPoint(3, 3));
DrawTiledBitmap(fBitmap, BRect(10, 110, 60, 160));