VOLUME_CONTROL - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers 
// ntddcdrm.h

typedef struct _VOLUME_CONTROL {
  UCHAR PortVolume[4];
} VOLUME_CONTROL, *PVOLUME_CONTROL;
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (ns-ntddcdrm-_volume_control)

_VOLUME_CONTROL structure

Description

The VOLUME_CONTROL structure is used in conjunction with the IOCTL_CDROM_GET_VOLUME request to retrieve volume values for up to four audio ports.

Members

PortVolume

Pointer to an array of volume values, one for each of the ports, with a maximum of four ports.

See also

IOCTL_CDROM_GET_VOLUME

View the official Windows Driver Kit DDI reference

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