So.. if you're not lazy...

Quote Originally Posted by vimal View Post
1=what is the difference between qimage and qpixmap.
QPixmap vs QImage
2=In a project there is a main window but after some time we realize that main window should be other dialog then what changes should be done.It will be large changes or some changes.
Then you change the base class and adjust your code.

3=Difference between mainwindow,dialog and widget.
QMainWindow, QDialog, QWidget