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ITsVISTA KB-Link: KB2022569

BUG: The Unicode version mixerGetLineControls doesn’t fill in the cbStruct of MIXERCONTROL structure properly

On Windows 7 or Vista, when you call GetMixerControlInfo to retrieve controls associated with an audio line, the Unicode version API doesn’t fill in the cbStruct of MIXERCONTROL structure properly. However on MSDN, it says that all members are filled in by the mixer device (including the cbStruct member of each MIXERCONTROL structure) upon returning successfully.

For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB2022569.

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