IWMPControls::fastReverse method (wmp.h)
[The feature associated with this page, Windows Media Player SDK, is a legacy feature. It has been superseded by MediaPlayer. MediaPlayer has been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer instead of Windows Media Player SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The fastReverse method starts fast play of the media item in the reverse direction.
Syntax
HRESULT fastReverse();
Return value
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Return code | Description |
|---|---|
|
The method succeeded. |
Remarks
The fastReverse method scans the clip in reverse at five times the normal speed, displaying only the key frames if it is a video file. Calling fastReverse is equivalent to specifying -5.0 for the rate through the IWMPSettings::put_rate method. If the rate is subsequently changed, or if IWMPControls::play or IWMPControls::stop is called, Windows Media Player will cease fast reverse.
If the item is part of a playlist, fastReverse stops at the beginning of the current track. For instance, if track 3 is in fastReverse, when the beginning of track 3 is reached, Windows Media Player will not go to track 2. The play count is not incremented when calling fastReverse.
If you call IWMPControls::fastForward while fastReverse is running, fastReverse will be stopped and IWMPControls::fastForward will begin.
This method does not work for live broadcasts and certain digital media types. To determine whether you can use fast reverse in a clip, call the IWMPControls::get_isAvailable method and pass in the BSTR value "FastReverse".
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Media Player 9 Series or later. |
| Target Platform | Windows |
| Header | wmp.h |
| DLL | Wmp.dll |