MM_MIXM_LINE_CHANGE top-level constant
int const MM_MIXM_LINE_CHANGE
The MM_MIXM_LINE_CHANGE message is sent by a mixer device to notify an application that the state of an audio line on the specified device has changed. The application should refresh its display and cached values for the specified audio line.
const MM_MIXM_LINE_CHANGE = 0x3D0;