IDDrawExclModeVideo::GetDDrawObject method (strmif.h)
[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The GetDDrawObject method retrieves the DirectDraw object being used by the Overlay Mixer filter.
Syntax
HRESULT GetDDrawObject(
[out] IDirectDraw **ppDDrawObject,
[out] BOOL *pbUsingExternal
);
Parameters
[out] ppDDrawObject
Address of a pointer to the IDirectDraw interface that the Overlay Mixer is using.
[out] pbUsingExternal
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 value
Returns an HRESULT value. Possible values include the following.
| Return code | Description |
|---|---|
|
Success. |
|
Argument is invalid. |
|
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.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | strmif.h (include Dshow.h) |
| Library | Strmiids.lib |