This MCI command message signals the device to begin transmitting output data. Support of this message by a device is optional. The parameters and flags for this message vary according to the selected device.
DWORD dwFlags
The following flags apply to all devices supporting MCI_PLAY:
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 field of the data structure identified by lpPlay.
MCI_WAIT
Specifies that the play operation should finish before MCI returns control to the application.
MCI_FROM
Specifies that a starting position is included in the dwFrom field of the data structure identified by lpPlay. The units assigned to the position values is specified with the MCI_SET_TIME_FORMAT flag of the MCI_SET command. If MCI_FROM is not specified, the starting position defaults to the current location.
MCI_TO
Specifies that an ending position is included in the dwTo field of the data structure identified by lpPlay. The units assigned to the position values is specified with the MCI_SET_TIME_FORMAT flag of the MCI_SET command. If MCI_TO is not specified, the end position defaults to the end of the media.
LPMCI_PLAY_PARMS lpPlay
Specifies a far pointer to an MCI_PLAY_PARMS data structure. (Devices with extended command sets might replace this data structure with a device-specific data structure.)
DWORD dwFlags
The following additional flags apply to animation devices:
MCI_ANIM_PLAY_FAST
Specifies to play fast.
MCI_ANIM_PLAY_REVERSE
Specifies to play in reverse.
MCI_ANIM_PLAY_SCAN
Specifies to scan quickly.
MCIMMP returns MCIERR_UNSUPPORTED_FUNCTION.
MCI_ANIM_PLAY_SLOW
Specifies to play slowly.
MCI_ANIM_PLAY_SPEED
Specifies that the play speed is included in the dwSpeed field in the data structure identified by lpPlay.
MCIMMP returns MCIERR_UNSUPPORTED_FUNCTION.
LPMCI_ANIM_PLAY_PARMS lpPlay
Specifies a far pointer to an MCI_ANIM_PLAY_PARMS data structure.
DWORD dwFlags
The following additional flags apply to videodisc devices:
MCI_VD_PLAY_FAST
Specifies to play fast.
MCI_VD_PLAY_REVERSE
Specifies to play in reverse.
MCI_VD_PLAY_SCAN
Specifies to scan quickly.
MCI_VD_PLAY_SLOW
Specifies to play slowly.
MCI_VD_PLAY_SPEED
Specifies that the play speed is included in the dwSpeed field in the data structure identified by lpPlay.
LPMCI_VD_PLAY_PARMS lpPlay
Specifies a far pointer to an MCI_VD_PLAY_PARMS data structure.
Returns zero if successful. Otherwise, it returns an MCI error code.
MCI_CUE, MCI_PAUSE, MCI_RECORD, MCI_RESUME, MCI_SEEK, MCI_STOP