The QProgressBar widget provides a horizontal progress bar. A progress bar is used to give the user an indication of progress of an operation. To reassure them that the application has not crashed. Constructs a progress bar. The total number of steps is set to 100 by default.
Handles paint events for the progress bar.
Reimplemented from QFrame. Draws the progressbar contents mask using the painter p . Used only in transparent mode. Reimplemented from QWidget. This method is called to generate the text displayed in the center of the progress bar.