Error using kdebutton widget in QT

[wysota]

You may also need to substitute QApplication with KApplication.

[mysearch05]

Thanks
Adding "LIBS += -lkdeui" to .pro file worked.

But still a problem, when i click on this button, it leads to "Segmentation Fault" and the application gets terminated. What can be the possible cause and a solution???
I have mapped the 'Clicked()' event to form's 'Close()'

Thanks...

[jacek]

But still a problem, when i click on this button, it leads to "Segmentation Fault" and the application gets terminated.

Could you post the backtrace?

What can be the possible cause and a solution???

As Wysota suggested, you might need to use KApplication and other KDE classes to make it work.