PRB: Setup Wizard Fails on HELO_SRV.VBP OC30.DLL Reference

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The information in this article applies to:

• Enterprise Edition of Microsoft Visual Basic, 32-bit only, for Windows, version 4.0

SYMPTOMS

The Setup Wizard fails when trying to locate the OC30.DLL file if it is used to build distribution disks for the \Vb\samples\remauto\hello\Helo_srv.VBP sample project.

CAUSE

The Helo_svr.VBP project was originally built using a BETA version of Visual Basic 4.0. The references are not properly updated in the released version of Visual Basic 4.0.

RESOLUTION

Use the following steps to resolve this problem:

1. Open the project in the design environment.

2. On the References Menu, select Options. Open the References dialog box.

3. Remove the Standard OLE Types reference for OC30.DLL and add the Standard OLE Types reference for OLEPRO32.DLL.

4. Save the project.

5. Run the Setup Wizard on the project.

STATUS

This behavior is by design.

MORE INFORMATION

The Helo_srv.VBP sample project incorrectly makes a reference to the OC30.DLL file for the Standard OLE Types. This file is a run-time file for OCX controls built with the Microsoft Foundation Classes (MFC) 3.0. This file is not included with Visual Basic, and Visual Basic does not use it. The 32-bit edition of Visual Basic 4.0 points to the OLEPRO32.DLL file for the Standard OLE Types.

There is an unrelated problem dealing with the OC30.DLL file. Many third party OCX manufacturers fail to ship this file with their OCXs built with MFC 3.0. Because Visual Basic does not include this file, the OCXs fail to register and run. This file must be obtained from the OCX manufacturer or Microsoft Visual C/C++ support.