See also MCI_CUE, MCI_PLAY, MCI_SEEK
Steps the player one or more frames.
DWORD lParam1
The following flags apply to all devices supporting MCI_STEP:
MCI_NOTIFY | Specifies that MCI should post the MM_MCINOTIFY message when this command completes. The window to receive this message is specified in the dwCallback member of the structure identified by lpStep. |
MCI_WAIT | Specifies that the step operation should finish before MCI returns control to the application. |
Animation Extensions
The following additional flag for lParam1 applies to animation devices.
MCI_ANIM_STEP_FRAMES | Indicates that the dwFrames member of the structure identified by lpStep specifies the number of frames to step. |
MCI_ANIM_STEP_REVERSE | Steps in reverse. |
Note that lParam2specifies a far pointer to the MCI_ANIM_STEP_PARMS structure.
Videodisc Extensions
The following additional flag for lParam1 applies to videodisc devices.
MCI_VD_STEP_FRAMES | Indicates that the dwFrames member of the structure identified by lParam2 specifies the number of frames to step. |
MCI_VD_STEP_REVERSE | Steps in reverse. |
Note that lParam2 specifies a far pointer to the MCI_VD_STEP_PARMS structure.
Only devices that return TRUE to the MCI_GETDEVCAPS_HAS_VIDEO capability query support this command at present.