Inserts the list of strings at the index index in the combo box. Handles key press events for the combo box. In Motif style, up and down change the selected item and both enter and return pops up the list. In Windows style, all four arrow keys change the selected item, and Space pops up the list. Reimplemented from QWidget.
Handles mouse double click events for the combo box.
Reimplemented from QWidget. Handles mouse move events for the combo box. Handles mouse press events for the combo box. Handles mouse release events for the combo box. Reimplemented from QWidget.