"apstring" sounds an awfully lot like Advanced Placement string for AP Computer Science A or AB in High School right? I took that class now 4 years ago, and we used metrowerks codewarrior, not VC++. Besides VC++ gives a different error message for PCH file errors.

I don''t know how to configure codewarrior, or how PCH''s work in it, but i do for VC++. Here''s my view on how they work in VC++ 6.0:

You have a common header file like "stdafx.h" with its associated "stdafx.cpp" file. Now stdafx.cpp has only 1 compile line: #include "stdafx.h". Why the seeming uselessness of this cpp file? It''s in your project settings.

In vc++ 6.0, right click on the cpp file (stdafx.cpp in this case) and goto settings. Under the C/C++ tab, there''s a pulldown box labeled categories. Put that to Precompiled Headers. Notice this: stdafx.cpp is set to create precompiled header file through file: stdafx.h. Any other files in your project will be set to: use precompiled header file though header: stdafx.h. That''s the importance of stdafx.cpp: It is always the first cpp file to be compiled because it is the file which creates the PCH file in the first place so the other cpp files can use it.

Now, it is also from this settings menu that you can turn off the use of PCH files for certain cpp files. You simply select the cpp file you want and select the option: not using precompiled headers. This way you don''t have to include the pch header at the top of every source file. This is vital when you have different projects that share common cpp and header files that cannot be modified.

I must say PCH files are awesome. My compile times on my game are down from 2 minutes to less than 15 seconds using them.

DreadID4

The error is misleading and generally has nothing to do with PCHs. Its far more likely to be a parenthesis snafu in one of the earlier headers.

quote:Original post by Willm
The error is misleading and generally has nothing to do with PCHs. Its far more likely to be a parenthesis snafu in one of the earlier headers.

This post is misleading and generally has nothing to do with your problem. It is far more likely to be explained in another post regarding PCHs.

i get that error on every function if i forget a semicolon on the last line of a header (usually the one after the } for a class)