PRB: Error Message "<library>.vcx Is Not an Object File" (162368)

SYMPTOMS

If you add an existing Visual FoxPro for Windows 3.0 .vcx class library file into a Visual FoxPro for Windows 5.0 project and attempt to modify an element of the library, you may get the following error message:

<path\library>.vcx is not an object file.

RESOLUTION

Create a copy of the Visual FoxPro for Windows 3.0 class library .vcx file, and then type the following in the command window:

COMPILE CLASSLIB <path\library>.vcx

MORE INFORMATION

Compile Classlib compiles source code contained in a memo field named Methods, and becomes compiled into object code that is stored in a memo field named OBJCODE.

Source code for class libraries, stored procedures, and forms are stored in memo fields either in the .vcx file table, the .dbc file table, or the .scx file table. When each is compiled, the object code is placed into a separate memo field. This object code is specific to the FoxPro version.

NOTE: Forms are automatically compiled when they are saved from the Form Designer. If you open a Visual FoxPro for Windows 5.0 form in Visual FoxPro for Windows 3.0, you will receive the following error message:

Error loading file - Methods - record number 2. Object file from <path\form>.scx was compiled in a previous version of FoxPro.

REFERENCES

For additional information, please see the following articles in the Microsoft Knowledge Base: