Multiple DirectDraw Objects per Process

DirectDraw allows a process to call the DirectDrawCreate function as many times as necessary. A unique and independent interface will be returned from each call. Each DirectDraw object can be used as desired; there are no dependencies between the objects. Each object behaves exactly as if it had been created by two different processes.

Since the DirectDraw objects are independent, the DirectDrawSurface, DirectDrawPalette, and DirectDrawClipper objects created with a particular DirectDraw object should not be used with other DirectDraw objects because these objects are automatically released when the DirectDraw object is destroyed. If they are used with another DirectDraw object, they may stop functioning if the original object is destroyed.

The exception is DirectDrawClipper objects created with the DirectDrawCreateClipper function. These objects are independent of any particular DirectDraw object and can be used with one or more DirectDraw objects.