error : tcl.h no find

sorry . I am a newer .

I use VC6.0 to make a small program with Draw Wizard .

The wizard creates a project of MFC application , but have compile

error like this :

tcl.h : no such file or director .

please help me .

and I think OpenCASCADE is too big . what can i make a small system ,

example only use a part of function .