MM_MCIPOSITIONCHANGE

This message notifies an application of the current media position.

Syntax

MsgParam1
USHORT usUserParameter; /* User-specified parameter. */
USHORT usDeviceID;      /* Device ID. */

MsgParam2
ULONG ulMMtime;         /* Media position. */

Parameters

usUserParameter (USHORT) - input

User parameter specified in the MCI_POSITION_PARMS structure when position advise notification was requested.

usDeviceID (USHORT) - input

Device ID.

ulMMtime (ULONG) - input

Media position in **MMTIME** units.

Returns

rc (BOOL) - return

Success indicator.

TRUE: Successful completion.

FALSE: Error occurred. (Note: The return value is typically ignored for this posted message.)

Remarks

This message is generated only periodically during a recording or playback operation if the MCI_SET_POSITION_ADVISE message has been sent to the device to enable position advise notifications. This message is posted to the window handle that was specified on the MCI_SET_POSITION_ADVISE message.

Default Processing

The default window procedure does not expect to receive this message and therefore takes no action on it, other than to set rc to the default value of FALSE.