DOCUMENT:Q77698 05-NOV-1999 [win16sdk] TITLE :How to Determine if Multimedia Windows Is Running PRODUCT :Microsoft Windows Software Development Kit PROD/VER:WINDOWS:3.0 OPER/SYS: KEYWORDS:kb16bitonly ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows Software Development Kit (SDK) 3.0 ------------------------------------------------------------------------------- SUMMARY ======= When Microsoft Multimedia Windows is run, certain drivers, such as MMSOUND.DRV and MMSYSTEM.DLL, are loaded immediately. An application can use this information to determine whether Multimedia Windows is running, as follows: hModule = GetModuleHandle("mmsystem.dll"); if (!hModule) { bMultimedia = FALSE; MessageBox(NULL, "This application should be run with MMWindows", "Alert", MB_OK); } GetModuleHandle() attempts to retrieve the "module instance" handle to the MMSYSTEM dynamic-link library (DLL). The return value is zero if MMSYSTEM has not been loaded and greater than zero if MMSYSTEM is loaded. Therefore, when hModule is zero, Multimedia Windows is not running; otherwise, Multimedia Windows is running. Additional query words: 3.00 ====================================================================== Keywords : kb16bitonly Technology : kbAudDeveloper kbWin3xSearch kbSDKSearch kbWinSDKSearch kbWinSDK300 Version : WINDOWS:3.0 ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 1999.