Again i installed qt-sdk package from terminal,
but getting same error when compiling qcad from source code.
Also modified library, file streams are now declared in header file.
Trying to remove redundancy in draw() function.
Used variables in makefile.
Today i learned how to use .vimrc plugin.
Although it is difficult for me, but i will do. Better things are never easy.
If i want to go vim directory. then you have to give
$ cd .vim
. (dot) for hidden files.