FILE: Using VB4DLL.TXT File to Develop DLLs for Visual Basic

• Microsoft Visual Basic Standard, Professional, and Enterprise Editions, 16-bit and 32-bit, for Windows, version 4.0

SUMMARY

This article describes the file, Vb4dll.txt, that contains information about developing DLLs for use with Visual Basic. This file ships with all editions of Visual Basic and is installed in the main Visual Basic directory. This file is also included in Vb4dll.exe, which is available for downloading as a self-extracting file through the Microsoft Software Library.

Following is the Table of Contents for this file:

• Calling Conventions



• 16/32-bit Issues



• Passing and Returning Common Built-in Types



• Passing and Returning Strings



• Passing and Returning User-Defined Types



• Passing and Returning Objects



• Passing and Returning Arrays



• Manipulating Variants



• Passing Unicode Strings



• Creating a Type Library



• Compiling a 32-bit Unicode DLL



• Creating a TypeLib For All The Functions In This Document



• Additional Resources

MORE INFORMATION

The following file is available for download from the Microsoft Software Library:

~ Vb4dll.exe

For more information about downloading files from the Microsoft Software Library, please see the following article in the Microsoft Knowledge Base:

Q119591 : How to Obtain Microsoft Support Files from Online Services

Additional query words: kbFile

Keywords          : kbfile kbVBp400 
Version           : 4.00 | 4.00
Platform          : NT WINDOWS 
Issue type        : 

Last Reviewed: May 27, 1999