Hello!!
I'm using MFC.
I'm using a sample which has C files.
I want to put some C++ code inside, and so, I have to change the name of the files from C to C++.
To do this, I rename the files in the Explorator, and in Visual Studio, I delete the file and then add the .cpp ones.

But when I've only done this, linking errors appear:

GradientImport.obj : error LNK2001: unresolved external symbol "void __cdecl DoAbout(struct AboutRecord *)" (?DoAbout@@YAXPAUAboutRecord@@@Z)

Am I doing wrong? Do someone know what I haver to do? Maybe change something in the Settings Project, but what?




Thanks for any help...