IAVTransport::Previous
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4/8/2010
This method moves the current media managed by this AVTransport instance to the previous track.
Syntax
virtual DWORD Previous() = 0;
Parameters
None.
Return Value
Custom implementations can return appropriate error codes. Should return SUCCESS_AV if the method succeeds. Otherwise, should return an error code defined in WinError.h or UPnP.h, or one of the UPnP AV-specific return values specified in UPnPAVError, especially the following errors documented for this action in the AVTransport DCP documentation:
- ERROR_AV_UPNP_AVT_INVALID_TRANSITION
- ERROR_AV_UPNP_AVT_TRANSPORT_LOCKED
- ERROR_AV_UPNP_AVT_ILLEGAL_SEEK_TARGET
- ERROR_AV_UPNP_AVT_INVALID_INSTANCE_ID
Remarks
This method corresponds to the AVTransport service's Previous action. It is equivalent to calling IAVTransport::Seek with the first parameter as TRACK_NR and the second parameter as a number that is one less than the current track.
For more information about the actions in the AVTransport service, see UPnP AV DCP Documentation.
Requirements
| Header | av_upnp.h |
| Library | Av_upnp.lib |
| Windows Embedded CE | Windows CE 5.0 and later |
| Windows Mobile | Windows Mobile Version 5.0 and later |