MCIERR Return Values

The mciSendCommand and mciSendString functions return zero if they are successful; otherwise, they return a DWORD value that contains one of the following error values in the low word.

• General MCI Errors
• mciSendString Errors
• Digital-Video Errors
• Sequencer Errors
• Waveform-Audio Errors

You can obtain a description of individual return values by passing the return values to the mciGetErrorString function.