## MMPM/2 Device Driver Reference

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### VSD_QUERYMONITOR - Syntax

This subcommand of the VSD_QUERY command queries the device to determine if audio monitoring is enabled. The VSD returns TRUE if the monitor is enabled and FALSE if it is disabled.

This command is sent using VSDEntry as follows:

        VSDEntry(hvsd, ulFunc, ulFlags, pRequest)

hvsd (HVSD) Handle to a VSD instance.

ulFunc (ULONG) Set to VSD_QUERY.

ulFlags (ULONG) Set to VSD_QUERYMONITOR.

pRequest (PULONG) Output.

rc (ULONG) VSD returns TRUE if the monitor is enabled and FALSE if it is disabled.