3
如何用GDI绘制透明椭圆?我试过SetBkMode()
,但我仍然得到一个白色的椭圆bk。透明椭圆
case WM_PAINT:
{
hdc = BeginPaint(hwnd, &ps);
SetBkMode(hdc, TRANSPARENT); // doesnt work
Ellipse(hdc, 0,0,500,500);
EndPaint(hwnd, &ps);
break;
}