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MM_MIXM_CONTROL_CHANGE (Compact 2013)

  • Artigo

3/26/2014

This message is sent by a mixer device to notify an application that the state of a control associated with an audio line has changed. The application should refresh its display and cached values for the specified control.

Syntax

MM_MIXM_CONTROL_CHANGE 
  wParam = (WPARAM) hMixer 
  lParam = (LPARAM) dwControlID

Parameters

  • hMixer
    Handle of the mixer device (HMIXER) that sent the message.

  • dwControlID
    Control identifier for the mixer control that has changed state.

    This identifier is the same as the dwControlID member of the MIXERCONTROL structure returned by the mixerGetLineControls function.

Return Value

None.

Remarks

An application must open a mixer device and specify a callback window to receive the MM_MIXM_CONTROL_CHANGE message.

Requirements

Header

mmsystem.h

See Also

Reference

Hardware Audio Mixer Messages
mixerGetLineControls
MIXERCONTROL