MCI_OPEN_DRIVER

MCI_OPEN_DRIVER_PARMS

typedef struct {
    UINT   wDeviceID;
    LPCSTR  lpstrParams;
    UINT  wCustomCommandTable;
    UINT  wType;
 } MCI_OPEN_DRIVER_PARMS;

The MCI_OPEN_DRIVER_PARMS structure contains data for the DRV_OPEN message.

wDeviceID

Specifies the MCI device ID.

lpstrParams

Specifies a long pointer to the entry parameter string obtained from the SYSTEM.INI file.

wCustomCommandTable

Specifies a handle to a custom command table for the MCI driver. Set to -1 if the device driver does not have a custom command table. The device driver must set this parameter.

wType

Specifies the type of device driver:

MCI_DEVTYPE_ANIMATION	Specifies an animation device type.
MCI_DEVTYPE_CD_AUDIO	Specifies a cdaudio device type.
MCI_DEVTYPE_DAT	Specifies a digital audiotape device type.
MCI_DEVTYPE_DIGITAL_VIDEO	Specifies a digital video device type.
MCI_DEVTYPE_OTHER	Specifies a device type not covered by other device types.
MCI_DEVTYPE_OVERLAY	Specifies a video overlay device type.
MCI_DEVTYPE_SEQUENCER	Specifies a sequencer device type.
MCI_DEVTYPE_SCANNER	Specifies a scanner device type.
MCI_DEVTYPE_VCR	Specifies a videotape device type.
MCI_DEVTYPE_VIDEODISC	Specifies a videodisc device type.
MCI_DEVTYPE_WAVEFORM_AUDIO	Specifies a waveaudio device type.