MCI_CLOSE_DRIVER

dwFlags = (DWORD) lParam1; // MCI flags 
lpMCI_CLOSE_PARMS = 
    (LPMCI_GENERIC_PARMS) lParam2; // Pointer to MCI_GENERIC_PARMS 
                                   // structure.

This message is the version of the MCI_CLOSE command sent from MCI to an MCI device.

• Returns zero if successful. Otherwise, it returns an MCI error code.

lParam1

Contains the flags specified in the MCI_CLOSE message.

lParam2

Specifies a far pointer to the MCI_GENERIC_PARMS structure.

An MCI internal procedure intercepts the MCI_CLOSE message sent by an application. After processing, the procedure calls the device with MCI_CLOSE_DRIVER and DRV_CLOSE. Windows will always close the driver following the MCI_CLOSE_DRIVER message.

If an application sets the MCI_NOTIFY flag, a device driver should send MM_MCINOTIFY just before returning from MCI_CLOSE_DRIVER.