QT Add Shortcut

 Direct binding shortcuts, the following is a button bindings shortcuts.

    ui -> btnNext -> setShortcut ( TR ( "Right" )); // button "next"

    UI -> btnPrevious -> setShortcut ( TR ( "Left" )); "Previous" button //

    UI -> actLoadSet -> setShortcut ( TR ( "the F4" )); // the button "load configuration"

    UI -> btnGetFinalImg -> setShortcut ( QKeySequence ( QLatin1String ( "the Alt + D" ))); // the button "Import"

    UI -> btnautobp -> setShortcut ( TR ( "F2 of" )); // the button "process"

    UI -> btnZoomIn -> setShortcut ( QKeySequence ( QLatin1String ( "PgUp" ))); // the button "zoom +"

    ui -> btnZoomOut -> setShortcut ( QKeySequence ( QLatin1String ( "PgDown" ))); // button to "zoom -"

Rewriting keyboard events keyPressEvent virtual function, do not forget to add <QKeyEvent> header, the following code is loaded alt + s settings file.

void MainWindow::keyPressEvent(QKeyEvent *event)

{

    if (event->modifiers() & Qt::AltModifier)

       {

        IF ( Event -> Key () == Qt :: Key_S ) // touch trigger   

        {

            settingsPath = QFileDialog :: getOpenFileName ( the this , QString ( QString :: fromUtf8 ( "load configuration" )), "" , QString ( "* .ini" ), 0 , 0 ); // when it is pressed alt + s open the file selection dialog   

            settingsName = settingsPath . sectionTop ( "/" , - . 1 , - . 1 , QString :: SectionSkipEmpty ); // get the data following the slash, document name  

            ui -> textinfo1 -> setText ( settingsName ); // display the file name on the screen

            LoadSettings ( settingsPath ); // call to load the settings information

        }

    }

} 
Reference code: 
https://blog.csdn.net/qq_37233607/article/details/78417769