Microsoft DirectX 9.0


Note   The IDvdControl interface is deprecated. Use IDvdControl2 instread.

Searches backward through the current disc at the specified speed.


HRESULT BackwardScan(
    double dwSpeed



[in] Value that specifies how quickly DirectShow will search through the media file. This value is a multiplier, where 1.0 is the authored speed, so a value of 2.5 will search backward at two and one-half times the authored speed, while a value of 0.5 will search backward at half the authored speed. The actual speed of playback depends on the capabilities of the video decoder, and might differ from the specified rate.

Return Value

Returns an HRESULT value.


This method returns an error unless the domain is DVD_DOMAIN_VideoManagerMenu, DVD_DOMAIN_VideoTitleSetMenu, or DVD_DOMAIN_Title. For more information, see DVD_DOMAIN.

See Also