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The following error values can be returned by either the mciSendCommand or mciSendString function:
| Value | Meaning |
|---|---|
| MCIERR_BAD_TIME_FORMAT | The specified value for the time format is invalid. |
| MCIERR_CANNOT_LOAD_DRIVER | The specified device driver will not load properly. |
| MCIERR_CANNOT_USE_ALL | The device name "all" is not allowed for this command. |
| MCIERR_CREATEWINDOW | Could not create or use window. |
| MCIERR_DEVICE_LENGTH | The device or driver name is too long. Specify a device or driver name that is less than 79 characters. |
| MCIERR_DEVICE_LOCKED | The device is now being closed. Wait a few seconds, then try again. |
| MCIERR_DEVICE_NOT_INSTALLED | The specified device is not installed on the system. Use the Drivers option from the Control Panel to install the device. |
| MCIERR_DEVICE_NOT_READY | The device driver is not ready. |
| MCIERR_DEVICE_OPEN | The device name is already used as an alias by this application. Use a unique alias. |
| MCIERR_DEVICE_ORD_LENGTH | The device or driver name is too long. Specify a device or driver name that is less than 79 characters. |
| MCIERR_DEVICE_TYPE_REQUIRED | The specified device cannot be found on the system. Check that the device is installed and the device name is spelled correctly. |
| MCIERR_DRIVER | The device driver exhibits a problem. Check with the device manufacturer about obtaining a new driver. |
| MCIERR_DRIVER_INTERNAL | The device driver exhibits a problem. Check with the device manufacturer about obtaining a new driver. |
| MCIERR_DUPLICATE_ALIAS | The specified alias is already used in this application. Use a unique alias. |
| MCIERR_EXTENSION_NOT_FOUND | The specified extension has no device type associated with it. Specify a device type. |
| MCIERR_EXTRA_CHARACTERS | You must enclose a string with quotation marks; characters following the closing quotation mark are not valid. |
| MCIERR_FILE_NOT_FOUND | The requested file was not found. Check that the path and filename are correct. |
| MCIERR_FILE_NOT_SAVED | The file was not saved. Make sure your system has sufficient disk space or has an intact network connection. |
| MCIERR_FILE_READ | A read from the file failed. Make sure the file is present on your system or that your system has an intact network connection. |
| MCIERR_FILE_WRITE | A write to the file failed. Make sure your system has sufficient disk space or has an intact network connection. |
| MCIERR_FILENAME_REQUIRED | The filename is invalid. Make sure the filename is no longer than eight characters, followed by a period and an extension. |
| MCIERR_FLAGS_NOT_COMPATIBLE | The specified parameters cannot be used together. |
| MCIERR_GET_CD | The requested file OR MCI device was not found. Try changing directories or restarting your system. |
| MCIERR_HARDWARE | The specified device exhibits a problem. Check that the device is working correctly or contact the device manufacturer. |
| MCIERR_ILLEGAL_FOR_AUTO_OPEN | MCI will not perform the specified command on an automatically opened device. Wait until the device is closed, then try to perform the command. |
| MCIERR_INTERNAL | A problem occurred in initializing MCI. Try restarting the Windows operating system. |
| MCIERR_INVALID_DEVICE_ID | Invalid device ID. Use the ID given to the device when the device was opened. |
| MCIERR_INVALID_DEVICE_NAME | The specified device is not open nor recognized by MCI. |
| MCIERR_INVALID_FILE | The specified file cannot be played on the specified MCI device. The file may be corrupt or may use an incorrect file format. |
| MCIERR_MISSING_PARAMETER | The specified command requires a parameter, which you must supply. |
| MCIERR_MULTIPLE | Errors occurred in more than one device. Specify each command and device separately to identify the devices causing the errors. |
| MCIERR_MUST_USE_SHAREABLE | The device driver is already in use. You must specify the "sharable" parameter with each open command to share the device. |
| MCIERR_NO_ELEMENT_ALLOWED | The specified device does not use a filename. |
| MCIERR_NO_INTEGER | The parameter for this MCI command must be an integer value. |
| MCIERR_NO_WINDOW | There is no display window. |
| MCIERR_NONAPPLICABLE_FUNCTION | The specified MCI command sequence cannot be performed in the given order. Correct the command sequence; then, try again. |
| MCIERR_NULL_PARAMETER_BLOCK | A null parameter block (structure) was passed to MCI. |
| MCIERR_OUT_OF_MEMORY | Your system does not have enough memory for this task. Quit one or more applications to increase the available memory, then, try to perform the task again. |
| MCIERR_OUTOFRANGE | The specified parameter value is out of range for the specified MCI command. |
| MCIERR_SET_CD | The specified file or MCI device is inaccessible because the application cannot change directories. |
| MCIERR_SET_DRIVE | The specified file or MCI device is inaccessible because the application cannot change drives. |
| MCIERR_UNNAMED_RESOURCE | You cannot store an unnamed file. Specify a filename. |
| MCIERR_UNRECOGNIZED_COMMAND | The driver cannot recognize the specified command. |
| MCIERR_UNSUPPORTED_FUNCTION | The MCI device driver the system is using does not support the specified command. |