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Can't catch Enter (Return)

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  • C Offline
    C Offline
    Chaki
    wrote on last edited by
    #1

    Hello,
    I have tried the following code to qDebug something when I click the Enter Button, but nothing happens:

    #include <QKeyEvent>
    bool MainWindow::eventFilter(QObject* obj, QEvent* event)
    {
         if (event->type()==QEvent::KeyPress) {
            QKeyEvent* key = static_cast<QKeyEvent*>(event);
            if ( (key->key()==Qt::Key_Enter) || (key->key()==Qt::Key_Return) ) {
                qDebug()<< "pressed";
            } else {
                return QObject::eventFilter(obj, event);
            }
            return true;
        } else {
            return QObject::eventFilter(obj, event);
        }
        return false;
    
    }
    private slots:
        bool eventFilter(QObject* obj, QEvent* event);
    JonBJ jsulmJ 2 Replies Last reply
    0
    • C Chaki

      Hello,
      I have tried the following code to qDebug something when I click the Enter Button, but nothing happens:

      #include <QKeyEvent>
      bool MainWindow::eventFilter(QObject* obj, QEvent* event)
      {
           if (event->type()==QEvent::KeyPress) {
              QKeyEvent* key = static_cast<QKeyEvent*>(event);
              if ( (key->key()==Qt::Key_Enter) || (key->key()==Qt::Key_Return) ) {
                  qDebug()<< "pressed";
              } else {
                  return QObject::eventFilter(obj, event);
              }
              return true;
          } else {
              return QObject::eventFilter(obj, event);
          }
          return false;
      
      }
      private slots:
          bool eventFilter(QObject* obj, QEvent* event);
      JonBJ Offline
      JonBJ Offline
      JonB
      wrote on last edited by
      #2

      @Chaki
      Where is the focus when you click the Enter key? Is it on a widget, or do you have a blank main window?

      1 Reply Last reply
      1
      • C Offline
        C Offline
        Chaki
        wrote on last edited by
        #3

        @JonB I am sorry, but I did not quite understand what you mean.
        Coul you explain it please?

        1 Reply Last reply
        0
        • C Chaki

          Hello,
          I have tried the following code to qDebug something when I click the Enter Button, but nothing happens:

          #include <QKeyEvent>
          bool MainWindow::eventFilter(QObject* obj, QEvent* event)
          {
               if (event->type()==QEvent::KeyPress) {
                  QKeyEvent* key = static_cast<QKeyEvent*>(event);
                  if ( (key->key()==Qt::Key_Enter) || (key->key()==Qt::Key_Return) ) {
                      qDebug()<< "pressed";
                  } else {
                      return QObject::eventFilter(obj, event);
                  }
                  return true;
              } else {
                  return QObject::eventFilter(obj, event);
              }
              return false;
          
          }
          private slots:
              bool eventFilter(QObject* obj, QEvent* event);
          jsulmJ Offline
          jsulmJ Offline
          jsulm
          Lifetime Qt Champion
          wrote on last edited by
          #4

          @Chaki said in Can't catch Enter (Return):

          when I click the Enter Button

          Do you mean: when I press the enter key?
          Or are you using virtual keyboard?

          https://forum.qt.io/topic/113070/qt-code-of-conduct

          1 Reply Last reply
          0
          • C Offline
            C Offline
            Chaki
            wrote on last edited by
            #5

            @jsulm i mean the enter key

            1 Reply Last reply
            0
            • C Offline
              C Offline
              Chaki
              wrote on last edited by
              #6

              I have solved it:

                  connect(ui->line_Edit, SIGNAL(returnPressed()),ui->btn_Button,SIGNAL(clicked()));
              JonBJ 1 Reply Last reply
              0
              • C Chaki

                I have solved it:

                    connect(ui->line_Edit, SIGNAL(returnPressed()),ui->btn_Button,SIGNAL(clicked()));
                JonBJ Offline
                JonBJ Offline
                JonB
                wrote on last edited by JonB
                #7

                @Chaki
                Which is what I suggested: you are pressing the Enter key on a QLineEdit, but you did not tell us that, it helps if you do! :) That line edit has the focus, so the key press will not get sent to the main window....

                1 Reply Last reply
                3
                • C Offline
                  C Offline
                  Chaki
                  wrote on last edited by
                  #8

                  @JonB Yes, you're right sir. Thanks you your reply

                  1 Reply Last reply
                  2

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