If it is TRUE, the dialog ensures events are processed when needed. The progress dialog becomes hidden. This signal is emitted when the cancel button is clicked. Reimplemented from QWidget. The progress dialog becomes hidden.
Handles resize events for the progress dialog, sizing the label, dialog, and cancellation button.
Reimplemented from QWidget. The progress dialog resizes to fit. The progress bar becomes owned by the progress dialog and will be deleted when necessary. Sets the cancellation button. The button becomes owned by the progress dialog and will be deleted when necessary, so do not pass the address of an object on the stack.