IDirectDraw::TestCooperativeLevel
A version of this page is also available for
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:
DDERR_INVALIDOBJECT |
DDERR_EXCLUSIVEMODEALREADYSET |
DDERR_WRONGMODE |
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
| Header | ddraw.h |
| Library | ddraw.lib |
| Windows Embedded CE | Windows Embedded CE 6.0 and later |
| Windows Mobile | Pocket PC for Windows Mobile Version 5.0 and later, Smartphone for Windows Mobile Version 5.0 and later |