Availability of Multimedia Timers

ID: Q140104

The information in this article applies to:

Microsoft Windows Software Development Kit (SDK) 3.1
Microsoft Win32 Software Development Kit (SDK), versions 3.5, 3.51, 4.0
Microsoft Win32s version 1.2

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 NT 3.51           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 MMTimer
Version : 3.10 1.20 4.00 | 3.50 3.51
Platform : NT WINDOWS
Issue type :