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Sending Command Strings
Windows provides two functions to send command strings to devices and to query
devices for error information:
- The mciSendString function sends a command string to an MCI device.
- The mciGetErrorString function returns the error string corresponding to an error number.
The mciSendString function returns zero if successful. If the function fails, the low-order word
of the return value contains an error code. You can pass this error code to mciGetErrorString to get a text description of it.
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Win32 Programmer's Reference (win32.hlp)
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