IVMRWindowlessControl::SetAspectRatioMode 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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 SetAspectRatioMode method specifies whether the VMR will preserve the aspect ratio of the source video.
Syntax
HRESULT SetAspectRatioMode(
[in] DWORD AspectRatioMode
);
Parameters
[in] AspectRatioMode
Specifies a member of the VMR_ASPECT_RATIO_MODE enumeration type.
Return value
Returns an HRESULT value. Possible values include the following:
| Return code | Description |
|---|---|
|
Invalid argument |
|
Success |
|
The VMR is not in windowless mode. |
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP with SP1 [desktop apps only] |
| Minimum supported server | Windows Server 2003 [desktop apps only] |
| Target Platform | Windows |
| Header | strmif.h (include Dshow.h) |
| Library | Strmiids.lib |
See also
IVMRWindowlessControl Interface