IDirectDraw::TestCooperativeLevel

A version of this page is also available for

Windows Embedded CE 6.0 R3

4/8/2010

This method reports the current cooperative-level status of the DirectDraw device for a windowed or full-screen application.

Syntax

HRESULT TestCooperativeLevel(void); 

Parameters

None.

Return Value

If the method succeeds, the return value is DD_OK, indicating that the calling application can continue executing.

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

For more information on these error codes see DirectDraw Return Values.

Remarks

This method is particularly useful to applications that use the WM_ACTIVATE and WM_DISPLAYCHANGE system messages as a notification to restore surfaces or re-create DirectDraw objects.

The DD_OK return value always indicates that the application can continue execution, but the failure codes are interpreted differently depending on the cooperative-level that the application uses.

Requirements