MCI_SETTUNER
The MCI_SETTUNER command sets the current channel on the tuner. VCR devices recognize this command.
To send this command, call the mciSendCommand function with the following parameters.
MCIERROR mciSendCommand(
MCIDEVICEID wDeviceID,
MCI_SETTUNER,
DWORD dwFlags,
(DWORD) (LPMCI_GENERIC_PARMS) lpSetTuner
);
Parameters
wDeviceID
Device identifier of the MCI device that is to receive the command message.
dwFlags
MCI_NOTIFY, MCI_WAIT, or MCI_TEST. For information about these flags, see The Wait, Notify, and Test Flags.
lpSetTuner
Pointer to an MCI_VCR_SETTUNER_PARMS structure.
Return Values
Returns zero if successful or an error otherwise.
Remarks
The following additional flags apply to VCR devices:
MCI_VCR_SETTUNER_CHANNEL
The dwChannel member of the structure identified by lpSetTuner contains the new channel number.
MCI_VCR_SETTUNER_CHANNEL_DOWN
Decrements the tuner channel.
MCI_VCR_SETTUNER_CHANNEL_SEEK_DOWN
Searches for a valid channel in the reverse direction.
MCI_VCR_SETTUNER_CHANNEL_SEEK_UP
Searches for a valid channel in the forward direction.
MCI_VCR_SETTUNER_CHANNEL_UP
Increments the tuner channel.
MCI_VCR_SETTUNER_NUMBER
The dwNumber member of the structure identified by lpSetTuner specifies which logical tuner to affect with this command.
Requirements
** Windows NT/2000/XP:** Included in Windows NT 3.1 and later.
** Windows 95/98/Me:** Included in Windows 95 and later.
** Header:** Declared in Mmsystem.h; include Windows.h.
See Also