## MMPM/2 Device Driver Reference

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### MIXERLINEINFO Field - ulLine

ulLine (ULONG) Line to set or query information.

The ulLine field must be filled in by the caller with one of the following VSD lines:

SOURCE_SYNTHESIZER Midi connection.

SOURCE_MIXER Mixer connection.

SOURCE_LINE Line connection.

SOURCE_INTERNAL_AUDIO Internal audio connection.

SOURCE_MICROPHONE Microphone connection.

SOURCE_WAVE Wave connection.

SOURCE_PC_SPEAKER PC speaker connection.