This example shows how an application gets a presentation space for drawing by calling the WinBeginPaint function. When drawing is complete, the WinEndPaint function is called to release the presentation space.

case WM_PAINT:
    hps = WinBeginPaint(hwnd, NULL, &rcl);
        .
        .  /* drawing routines would go here */
        .

    WinEndPaint(hps);
    return (0L);