[Dev-C++] How to include my own Lib files

[Napoleon A. <nah...@so...>]

Hello,
I have a directory C:\CppLab\MyLib which contains my Library files. I've =
been trying to include files from this directory in a program without =
success. I have entered the path under \Tools\Compiler =
Options\Directories\Include. But When I compile the program I get the =
linker error:

//C/CppLab/Winnie/main.cpp:21: undefined reference to =
`Win::ClassMaker::ClassMaker(char const *, HINSTANCE__ *)'
//C/CppLab/Winnie/main.cpp:23: undefined reference to =
`Win::Maker::Maker(char const *, HINSTANCE__ *)'
//C/CppLab/Winnie/main.cpp:25: undefined reference to =
`Win::Maker::Create(Win::Controller &, char const *)'

When I copy all the files into the same directory I get no errors.
What am I doing wrong ?

Thanks=20
Napoleon.

 =20