MM_MIXM_CONTROL_CHANGE message
The MM_MIXM_CONTROL_CHANGE 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.
MM_MIXM_CONTROL_CHANGE
wParam = (WPARAM) hMixer
lParam = (LPARAM) dwControlID
Parameters
-
hMixer
-
Handle to the mixer device (HMIXER) that sent the notification message.
-
dwControlID
-
Control identifier for the mixer control that has changed state. This identifier is the same as thedwControlID member of theMIXERCONTROLstructure returned by themixerGetLineControlsfunction.
Remarks
An application must open a mixer device and specify a callback window to receive the MM_MIXM_CONTROL_CHANGE message.
Requirements
Requirement | Value |
---|---|
Minimum supported client |
Windows 2000 Professional [desktop apps only] |
Minimum supported server |
Windows 2000 Server [desktop apps only] |
Header |
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See also
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