An application can draw in a window's presentation space without having received a WM_PAINT message. As long as there is a presentation space for the window, an application can draw into the presentation space and avoid intruding into other windows or the desktop. Applications that draw without using the WM_PAINT message typically call the WinGetPS function to obtain a cached-micro presentation space for the window and call the WinReleasePS function when they have finished drawing. An application also can use any of the other types of presentation spaces described in the following sections.