Microsoft KB Archive/80281

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PRB: Combining Multiple Compiled Resource Files Fails

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Q80281

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The information in this article applies to:


 * Microsoft Windows Software Development Kit (SDK) versions 3.0, 3.1

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SYMPTOMS
An application is unable to load some of its resources, while other resources load properly.

CAUSE
Several small compiled resource (RES) files have been combined using the MS-DOS command &quot;COPY /b&quot;.

RESOLUTION
Use the #include directive to combine the files at the source level.

MORE INFORMATION
The Resource Compiler that was shipped with the Microsoft Windows Software Development Kit (SDK) versions 2.x ca not handle large resource files because of inherent memory limitations. To work around these limitations, it is recommended that programmers compile the resources into small RES files, and combine these files using the MS-DOS COPY /b command.

The Resource Compiler shipped with version 3.x of the Windows SDK has been enhanced to handle resource files much larger than its Windows 2.x counterpart. The format of the compiled resource files in Windows 3.x does not support concatenation of RES files.

If an application has a large number of resources, even the version 3.x Resource Compiler can run out of memory. If this occurs, modify the design of the application to use a resource-only dynamic-link library (DLL). The following three steps outline the required process to perform this type of functionality:


 * 1) Use the Resource Compiler to create a resource-only DLL that contains some of the application's resources. See the note below regarding resource-only DLLs under Windows 3.x.
 * 2) In the application, load the resource library using the LoadLibrary function.
 * 3) Use the LoadBitmap, LoadMenu, and so forth, functions to load resources from the DLL as required.

Under Windows 3.x, resource-only DLLs require a Windows exit procedure (WEP). The WEP must be exported in the DEF file and the export must have the RESIDENTNAME attribute. Place the code for the WEP into a FIXED code segment. The source code for a WEP follows:

  int far pascal WEP(int NotUsed) {     return 1; } The &quot;far&quot; and &quot;pascal&quot; declarators are in lowercase to avoid having to include the WINDOWS.H header file.

Additional query words: 3.00 3.10 dialog icon menu bitmap cursor font rcdata stringtable

Keywords : kb16bitonly

Issue type :

Technology : kbAudDeveloper kbWin3xSearch kbSDKSearch kbWinSDKSearch kbWinSDK300 kbWinSDK310