[Qt-interest] cant inherit Qmainwindow

[RPREMANAND RPREMANAND]

i have the source.qt-x11-eval-src-4.4.1.
when i tried to create a basic applictn by inheriting Qwidget and
QMainwindow
but cant inherit qmainwindow or qwidget.iget the errors
main does not  have return type ,
main cant retrun other than int data type.
i i htink i have problem with env varbles or lib files.
can u suggets me a solution early possilble.
Thanks in advance
Prem
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