The step command steps the play one or more frames forward or reverse. The default action is to step forward one frame. Digital-video, VCR, and CAV-format videodisc devices recognize this command.
wsprintf(lpstrCommand, "step %s %s %s", lpszDeviceID, lpszStepFlags,
lpszFlags);
by frames | Indicates the number of frames to step. If you specify a negative frames value, you cannot specify the "reverse" flag. |
reverse | Step the frames in reverse. |
Returns zero if successful or an error otherwise.
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Unsupported.
MCI Overview, MCI Command Strings