Maximum PC

I've run into a problem I cannot figure out at all. I have a demo project that was given to me that was originally developed in MS Visual Studio 6. I opened it in Visual Studio 2005 and it did a quick upgrade to the configuration to make it compatible. It builds and runs fine without errors.

I created a new project and copied two of the source code files (both .cpp and .h files) to reuse some of the functionality. When I compile this project, it gives compile errors on several lines of these files. These are the exact same files (unedited) that compiled perfectly fine in the previous project. The errors are of the type:

error C2664: 'strlen' : cannot convert parameter 1 from 'CString' to 'const char *' 1> No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called

And in some cases:
error C2440: 'type cast' : cannot convert from 'CString' to 'LPCSTR'

Does anyone have idea why I would get compile errors in one project, but not the other? I looked for all kinds of project settings might cause this and couldn't see anything.

If you're able to release the code, seeing it would help.

As for your problems, it sounds to me that they lie with the CString type, documented here: http://msdn.microsoft.com/en-us/library/ms174288.aspx

But as far as the strlen function goes, that's just looking for a c-style string. It says here that you should be able to just typecast it.

Like I said we'd be able to help much more effectively if we could take a look at the code.

Here are a couple examples of the errors:

error C2664: 'strlen' : cannot convert parameter 1 from 'CString' to 'const char *'
if(strlen(ps->Text)==0)
return 2 * ps->PointSize;

error C2440: 'type cast' : cannot convert from 'CString' to 'LPCSTR'
lstrcpy((LPSTR)lf.lfFaceName, (LPCSTR)ps->FontName);


error C2664: 'lstrcpyW' : cannot convert parameter 1 from 'LPSTR' to 'LPWSTR'
lstrcpy((LPSTR)lf.lfFaceName, (LPCSTR)ps->FontName);


The code I'm trying out is the CPage and CPrinter classes from this website:
http://www.ucancode.net/Visual-C-Print- ... tables.htm

I can accept the fact that there my be issues with this code. I just don't understand why I can compile these files without any errors at all when trying the demo project I downloaded.

Thanks!

Did you get all the .h files? It looks to me like there's a define somewhere in one of the files you didn't include.

Wow...I think I just figured it out. Almost by accident. I was playing with creating new projects with different settings in the AppWizard and adding those source files to compile. After several tries, I discovered that if I unchecked use Unicode support libraries, the project compiles without any of those errors.

That might do it lol...



I saw that before but I would have thought you'd get errors saying something about unicode... maybe it had something to do with the special CString type. But congrats on fixing it...