PRB: mixerOpen Function Callbacks Not Available in Win32

ID: Q163356

The information in this article applies to:

Microsoft Win32 Application Programming Interface (API), included with:
- Microsoft Windows 95

SUMMARY

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.

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.

Additional query words: 4.00


Keywords          : kbmm ntddkmmedia 
Version           : 4.00
Platform          : WINDOWS 
Issue type        :

Last Reviewed: March 4, 1999