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Inserting a QAction into a QLayout

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  • Christian EhrlicherC Christian Ehrlicher

    An action is not a widget so you can't add it to a layout. What do you really want to do? If you want to execute an action after e.g. a button was pressed then add a button and connect the appropriate signal to the action.

    JoeCFDJ Offline
    JoeCFDJ Offline
    JoeCFD
    wrote on last edited by JoeCFD
    #3

    @Christian-Ehrlicher ui->myToolbar->widgetForAction(ui->myAction) is a widget, not an action.
    I would prefer to create a new widget for this action. Otherwise, the same widget will be in two layouts.

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    • Christian EhrlicherC Online
      Christian EhrlicherC Online
      Christian Ehrlicher
      Lifetime Qt Champion
      wrote on last edited by
      #4

      @JoeCFD said in Inserting a QAction into a QLayout:

      I would prefer to create a new widget for this action

      Then do this.

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      • SGaistS Offline
        SGaistS Offline
        SGaist
        Lifetime Qt Champion
        wrote on last edited by
        #5

        Hi,

        You can associate an action with several widgets for example you can use the same action in a toolbar and a menu.

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

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        • Christian EhrlicherC Christian Ehrlicher

          @JoeCFD said in Inserting a QAction into a QLayout:

          I would prefer to create a new widget for this action

          Then do this.

          J Offline
          J Offline
          JulienMaille
          wrote on last edited by
          #6

          @Christian-Ehrlicher said in Inserting a QAction into a QLayout:

          @JoeCFD said in Inserting a QAction into a QLayout:

          I would prefer to create a new widget for this action

          Then do this.

          He's not the original poster :)
          I would like the widget to react to the QAction visible/disable state (event the tooltip text is shared accross widgets), juste like other QWidgets associated to that QAction.
          As @SGaist said a QAction can be present in several toolbars and menus.

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          • Christian EhrlicherC Online
            Christian EhrlicherC Online
            Christian Ehrlicher
            Lifetime Qt Champion
            wrote on last edited by
            #7

            So still don't understand the problem. Then add the action to e.g. a QPushButton or similar... and action can be associated to more than one widget: https://doc.qt.io/qt-5/qaction.html#associatedWidgets

            Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
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            • Christian EhrlicherC Christian Ehrlicher

              So still don't understand the problem. Then add the action to e.g. a QPushButton or similar... and action can be associated to more than one widget: https://doc.qt.io/qt-5/qaction.html#associatedWidgets

              J Offline
              J Offline
              JulienMaille
              wrote on last edited by
              #8

              @Christian-Ehrlicher said in Inserting a QAction into a QLayout:

              So still don't understand the problem. Then add the action to e.g. a QPushButton or similar... and action can be associated to more than one widget: https://doc.qt.io/qt-5/qaction.html#associatedWidgets

              I'm not sure I understood how I can add my own QPushButton to the associatedWidgets

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              • Christian EhrlicherC Online
                Christian EhrlicherC Online
                Christian Ehrlicher
                Lifetime Qt Champion
                wrote on last edited by
                #9

                Via QWidget::addActionas described in the link. But it will not help much since a QPushButton does not react on QEvent::ActionChanged - only a QToolButton or QMenu and some others do. Therefore either derive from QPushButton and do it by your own or, as I already said in my first post: 'If you want to execute an action after e.g. a button was pressed then add a button and connect the appropriate signal to the action.'

                Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
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                • J Offline
                  J Offline
                  JulienMaille
                  wrote on last edited by
                  #10

                  As you said addAction() does not help with my request. It will note even trigger the associated action

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                  • SGaistS Offline
                    SGaistS Offline
                    SGaist
                    Lifetime Qt Champion
                    wrote on last edited by
                    #11

                    Why use a QPushButton if you want to move a QToolButton around ?

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

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                    • J Offline
                      J Offline
                      JulienMaille
                      wrote on last edited by
                      #12

                      @SGaist what are you suggesting? Is there a way I can easily insert a QAction in a layout as a QToolButton?
                      If I need to create my own toolbutton, connect all the signals and icon/title changes myself, then it defeats the whole purpose of using a QAction

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                      • Christian EhrlicherC Online
                        Christian EhrlicherC Online
                        Christian Ehrlicher
                        Lifetime Qt Champion
                        wrote on last edited by
                        #13

                        Add a QToolButton to the layout and add the action with QWidget::addAction() as I already told you and the documentation tells you.

                        Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
                        Visit the Qt Academy at https://academy.qt.io/catalog

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                        • J Offline
                          J Offline
                          JulienMaille
                          wrote on last edited by
                          #14

                          I have added a QToolBar in my layout, and add the actions to the toolbar, it works and I think that is the right way to do this.

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                          • Christian EhrlicherC Christian Ehrlicher

                            Add a QToolButton to the layout and add the action with QWidget::addAction() as I already told you and the documentation tells you.

                            J Offline
                            J Offline
                            JulienMaille
                            wrote on last edited by
                            #15

                            @Christian-Ehrlicher said in Inserting a QAction into a QLayout:

                            Add a QToolButton to the layout and add the action with QWidget::addAction() as I already told you and the documentation tells you.

                            This doesn't work. It will add a dropdown icon suggesting the toolbutton has a menu and nothing else

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                            • Christian EhrlicherC Online
                              Christian EhrlicherC Online
                              Christian Ehrlicher
                              Lifetime Qt Champion
                              wrote on last edited by
                              #16

                              Then use signals/slots

                              Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
                              Visit the Qt Academy at https://academy.qt.io/catalog

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