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QPlainTextEdit::QCloseEvent

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  • mrjjM Offline
    mrjjM Offline
    mrjj
    Lifetime Qt Champion
    wrote on last edited by
    #3

    Hi
    One note.
    Are you using configText as a window ?
    If not, im not sure closeEvent Will be triggered unless you call
    QWidget::close() yourself.
    If configText is a widget inside a form, should you not hook up to the forms
    close event ?

    1 Reply Last reply
    2
    • M Offline
      M Offline
      Mehodin
      wrote on last edited by
      #4

      well, I am using configText as a separate window using configText->show().
      So it's a separate window.

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      0
      • M Offline
        M Offline
        Mehodin
        wrote on last edited by
        #5

        @mrjj do you maybe know a different way to just clear() it when it closes?

        mrjjM 1 Reply Last reply
        0
        • M Mehodin

          @mrjj do you maybe know a different way to just clear() it when it closes?

          mrjjM Offline
          mrjjM Offline
          mrjj
          Lifetime Qt Champion
          wrote on last edited by
          #6

          @Mehodin
          Hi
          When its a window, then close Event seems pretty appropriate if you want to perform
          some task when extra floating window is closed.

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          1
          • M Offline
            M Offline
            Mehodin
            wrote on last edited by
            #7

            @mrjj yeah but it's not a real QWindow, it's just a widget that's floating.

            mrjjM 1 Reply Last reply
            0
            • M Mehodin

              @mrjj yeah but it's not a real QWindow, it's just a widget that's floating.

              mrjjM Offline
              mrjjM Offline
              mrjj
              Lifetime Qt Champion
              wrote on last edited by mrjj
              #8

              @Mehodin
              Hi
              Well any widget, you dont give a parent, will set the Be a Window flags and
              act like a window with border etc. So using closeEvent seems fine
              to do some last call clean up when its closed.
              Only downside is that you have to subclass QPlainTextEdit to have access to it.

              But since you want to call something in Firefly , you might want to do something like

              #ifndef MYPLAINTEXT_H
              #define MYPLAINTEXT_H
              
              #include <QPlainTextEdit>
              
              class MyPlainText : public QPlainTextEdit
              {
                  Q_OBJECT
              public:
                  explicit MyPlainText(QWidget *parent = nullptr) : QPlainTextEdit(parent) {}
              signals:
                  void Closing(); // define new signal
              
              protected:
                  virtual void closeEvent(QCloseEvent *event) override
                  {
                      emit Closing(); // send signal before closing.
                      QPlainTextEdit::closeEvent(event);
                  }
              };
              
              #endif // MYPLAINTEXT_H
              

              and hook the new signal Closing to Firefly::clearSubMenus
              from outside. That way, MyPlainText dont need any access to Firefly.

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              4
              • M Offline
                M Offline
                Mehodin
                wrote on last edited by
                #9

                @mrjj

                0_1550599921743_d9a3530b-c89c-4b14-b500-562040496230-afbeelding.png

                That's somehow giving me a lot of errors though when using it.

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                • mrjjM Offline
                  mrjjM Offline
                  mrjj
                  Lifetime Qt Champion
                  wrote on last edited by mrjj
                  #10

                  Hi
                  Hmm. compiles here.
                  How did you use it ?
                  should be placed in its own .h file and included in the project.
                  Then you hook up new signal and show the widget.

                  void MainWindow::on_pushButton_clicked()
                  {
                      auto *win = new MyPlainText();
                      win->setAttribute(Qt::WA_DeleteOnClose);
                      connect(win, &MyPlainText::Closing, this, []() {
                          qDebug() << "win is closing";
                      });
                  
                      win->show();
                  }
                  
                  

                  test project
                  https://www.dropbox.com/s/hg8xz8uour34cc8/untitled79.zip?dl=0

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                  • M Offline
                    M Offline
                    Mehodin
                    wrote on last edited by
                    #11

                    #ifndef MYPLAINTEXT_H
                    #define MYPLAINTEXT_H

                    #include <QPlainTextEdit>

                    class textWindow : public QPlainTextEdit
                    {
                    Q_OBJECT
                    public:
                    explicit textWindow(QWidget *parent = nullptr) : QPlainTextEdit(parent) {}
                    signals:
                    void Closing(); // define new signal

                    protected:
                    virtual void closeEvent(QCloseEvent *event) override
                    {
                    emit Closing(); // send signal before closing.
                    QPlainTextEdit::closeEvent(event);
                    }
                    };
                    #endif

                    in a .h file

                    proxyText = new textWindow();
                    configText = new textWindow();
                    comboText = new textWindow();
                    connect(proxyText, &textWindow::Closing, this, &Firefly::clearSubMenus);
                    //connect(configText, &textWindow::Closing, this, &Firefly::clearSubMenus);
                    //connect(comboText, &textWindow::Closing, this, &Firefly::clearSubMenus);
                    

                    in firefly.cpp

                    @mrjj

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                    0
                    • SGaistS Offline
                      SGaistS Offline
                      SGaist
                      Lifetime Qt Champion
                      wrote on last edited by
                      #12

                      Hi,

                      What does clearSubMenus look like ?

                      Interested in AI ? www.idiap.ch
                      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                      1 Reply Last reply
                      0
                      • M Offline
                        M Offline
                        Mehodin
                        wrote on last edited by
                        #13

                        @SGaist

                        The 3 text edits ->clear(); (on phone right now)

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                        0
                        • SGaistS Offline
                          SGaistS Offline
                          SGaist
                          Lifetime Qt Champion
                          wrote on last edited by
                          #14

                          I meant it signature.

                          Interested in AI ? www.idiap.ch
                          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                          1 Reply Last reply
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