Handles mouse move events for the button. Reimplemented from QWidget. Handles mouse press events for the button. Reimplemented from QWidget. Handles mouse release events for the button.
Handles paint events for the button.
Reimplemented from QWidget. This signal is emitted when the button is pressed down. This signal is emitted when the button is released. Specifies an accelerator key for the button, or removes the accelerator if key is 0. You only need to call this function in order to specify a custom accelerator.