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  4. why setVisibe not work?
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why setVisibe not work?

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  • O Offline
    O Offline
    opengpu2
    wrote on last edited by
    #1

    why setVisibe not work?
    i want to dynamically show or hide a QCombo in a Toolbar.
    but setVisibe(false); not work.
    while setEnabled() do work.

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    • D Offline
      D Offline
      dbzhang800
      wrote on last edited by
      #2

      QAction * QToolBar::addWidget(QWidget * widget)
      Adds the given widget to the toolbar as the toolbar's last item.

      The toolbar takes ownership of widget.

      If you add a QToolButton with this method, the toolbar's Qt::ToolButtonStyle will not be respected.

      Note: You should use QAction::setVisible() to change the visibility of the widget. Using QWidget::setVisible(), QWidget::show() and QWidget::hide() does not work.

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      • O Offline
        O Offline
        opengpu2
        wrote on last edited by
        #3

        but it's a QComboBox in the QToolbar....how can i use QAction??

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        • SGaistS Offline
          SGaistS Offline
          SGaist
          Lifetime Qt Champion
          wrote on last edited by
          #4

          Hi,

          Look again at the function signature: you get a QAction as a result of addWidget.

          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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