IDirectDrawSurface3::EnumOverlayZOrders

The IDirectDrawSurface3::EnumOverlayZOrders method enumerates the overlay surfaces on the specified destination. The overlays can be enumerated in front-to-back or back-to-front order.

HRESULT EnumOverlayZOrders(

DWORD dwFlags,

LPVOID lpContext,

LPDDENUMSURFACESCALLBACK lpfnCallback

);

Parameters

dwFlags

One of the following flags:

DDENUMOVERLAYZ_BACKTOFRONT
	Enumerates overlays back to front.
DDENUMOVERLAYZ_FRONTTOBACK
	Enumerates overlays front to back.

lpContext

Address of the user-defined context that will be passed to the callback function for each overlay surface.

lpfnCallback

Address of the EnumSurfacesCallback callback function that will be called for each surface being overlaid on this surface.

Return Values

If the method succeeds, the return value is DD_OK.

If the method fails, the return value may be one of the following error values: