PRB: mixerOpen Function Callbacks Not Available in Win32

Last reviewed: February 17, 1997
Article ID: Q163356

The information in this article applies to:

- Microsoft Win32 Application Programming Interface (API) included with:

   - Microsoft Windows 95

SYMPTOMS

In Win32 the mixerOpen dwCallback parameter cannot specify the address of a callback function. This API only allows the dwCallback parameter to be a handle to a window.

STATUS

This behavior is by design.

MORE INFORMATION

As documented in the Windows Sound System 2.0 DDK, applications can use the mixerOpen API with a dwCallback parameter to specify the address of a callback function or a handle to a window that is called when the state of an audio mixer line or control associated with the device being opened is changed.

KBCategory: kbmm kbprb
KBSubcategory: NTDDKMMedia
Additional reference words: 4.00

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Last reviewed: February 17, 1997
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