Microsoft KB Archive/140104

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HOWTO: Availability of Multimedia Timers

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Q140104

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The information in this article applies to:


 * Microsoft Windows Software Development Kit (SDK) 3.1
 * Microsoft Win32s version 1.2
 * Microsoft Platform Software Development Kit (SDK), used with:
 * Microsoft Windows versions 3.1, 3.11
 * Microsoft Windows 95
 * Microsoft Windows 98
 * Microsoft Windows NT Server versions 3.5, 3.51, 4.0
 * Microsoft Windows NT Workstation versions 3.5, 3.51, 4.0
 * the operating system: Microsoft Windows 2000

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SUMMARY
The number of multimedia timers your application can create at one time can vary based on the operating system it is running on and whether the application is 16-bit or 32-bit.

MORE INFORMATION
The following table gives an indication of what you can expect:

Operating System     16-bit app   32-bit app -- Windows 3.11              8           0 (Not supported on Win32s) Windows 95               32          32 Windows 98               32          32 Windows NT 3.51          16          16 per process Windows NT 4.0           16          16 per process Windows 2000             16          16 per process

Note that a multimedia timer is created by using the timeSetEvent API. With the exception of a 32-bit application running under Windows NT, these numbers represent the total number of available timers in the entire system. With this in mind, the number of multimedia timers your application can allocate at one time could be less then the amount shown in the table. Win32s does not support multimedia callbacks, so the timeSetEvent API is not available under Win32s.

Additional query words: limit

Keywords : kbmm

Issue type : kbhowto

Technology : kbWin32SDKSearch kbAudDeveloper kbSDKSearch kbWin32sSearch kbWinSDKSearch