| Microsoft DirectX 8.1 (C++) |
The GetDDrawObject method retrieves the DirectDraw object being used by the Overlay Mixer filter.
Syntax
HRESULT GetDDrawObject(
LPDIRECTDRAW *pDDrawObject,
BOOL *pbUsingExternal
);
Parameters
pDDrawObject
[out] Address of a pointer to the IDirectDraw interface that the Overlay Mixer is using.
pbUsingExternal
[out] Pointer to a variable that receives a Boolean value. It receives the value TRUE if the Overlay Mixer is using a DirectDraw object specified by IDDrawExclModeVideo::SetDDrawObject, or FALSE otherwise.
Return Values
Returns an HRESULT value. Possible values include the following.
| Return code | Description |
| S_OK | Success. |
| E_INVALIDARG | Argument is invalid. |
| A DirectDraw error code | A DirectDraw error is encountered when trying to set the specified surface on the Overlay Mixer. |
Remarks
If the filter graph has not set a DirectDraw object and the Overlay Mixer has not yet allocated one, then pDDrawObject will be set to NULL and pbUsingExternal will be set to FALSE.
See Also