When adding custom buttons to a QMessageBox the return value of exec()
as well as result() is not a StandardButton value, but instead an opaque
value, and the documentation says to use clickedButton() to determine
which button was clicked.
Pick-to: 6.5
Change-Id: Ib47a218989b4dcb5d51f648bc55bc02399bae602
Reviewed-by: Oliver Eftevaag <oliver.eftevaag@qt.io>
(cherry picked from commit 1fd1ffd03d6889273f574c698e07c611bd311fd9)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>