macro retrieves the current operating mode of an MCI device. MCI devices have
several operating modes, which are designated by constants. You can use this
macro or explicitly send the MCIWNDM_GETMODE
Handle of the MCIWnd window.
Address of the application-defined buffer used to return the mode.
Size, in bytes, of the buffer.
Returns an integer corresponding to the MCI constant defining the mode.
If the null-terminated string describing the mode is longer than the buffer,
it is truncated.
Not all devices can operate in every mode. For example, the MCIAVI device is a
playback device; it doesn't support the recording mode. The following modes
can be retrieved by using MCIWNDM_GETMODE:
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