| MCI_NOTIFY | Specifies that MCI should post the MM_MCINOTIFY message when this command completes. The window that receives this message is specified in the dwCallback field of the data structure identified by lParam2. |
| MCI_WAIT | Specifies that the close operation should finish before MCI returns control to the application. |
| LPMCI_GENERIC_PARMS lParam2 | Specifies a far pointer to the MCI_GENERIC_PARMS data structure. (Devices with extended command sets might replace this data structure with a device-specific data structure.) |
| Return Value | Returns zero if successful. Otherwise, it returns an MCI error code. |
| Comments | MCI_CLOSE applies to each instance of a digital-video device driver. Closing an instance releases all resources associated with it. If the window is a default window, it is destroyed; otherwise the contents of the window are not defined. If the workspace contains unsaved data, or there is a save in progress, then the associated data is lost. Your applications might choose to protect the user from losing this data. You can use the MCI_DGV_STATUS_UNSAVED and MCI_STATUS_FILE_MODE flags for the MCI_STATUS message to determine if the user might lose any unsaved data. |
| Your application should explicitly close each device or device element when it finishes using the device. MCI unloads a device when all instances of it are closed. |
| See Also | MCI_OPEN, MCI_STATUS |