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Separate display text for Selected Item for QComboBox

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  • A Offline
    A Offline
    ajaxcrypto
    wrote on last edited by
    #1

    In a QComboBox I have a set of QString. The standard behavior is that whatever entry is selected gets displayed at top (QLineEdit). However my need is to display a modified version of the selected text in the line edit without changing the text in the drop down list. How can I go about achieving this?

    e.g. If the list has { "a", "b", "c" }, selecting "a" , the line edit should contain "a-1".

    jsulmJ Venkatesh VV 2 Replies Last reply
    0
    • A ajaxcrypto

      In a QComboBox I have a set of QString. The standard behavior is that whatever entry is selected gets displayed at top (QLineEdit). However my need is to display a modified version of the selected text in the line edit without changing the text in the drop down list. How can I go about achieving this?

      e.g. If the list has { "a", "b", "c" }, selecting "a" , the line edit should contain "a-1".

      jsulmJ Offline
      jsulmJ Offline
      jsulm
      Lifetime Qt Champion
      wrote on last edited by
      #2

      @ajaxcrypto Using http://doc.qt.io/qt-5/qcombobox.html#lineEdit you can get the line edit and then change its text using http://doc.qt.io/qt-5/qlineedit.html#text-prop

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

      1 Reply Last reply
      1
      • A ajaxcrypto

        In a QComboBox I have a set of QString. The standard behavior is that whatever entry is selected gets displayed at top (QLineEdit). However my need is to display a modified version of the selected text in the line edit without changing the text in the drop down list. How can I go about achieving this?

        e.g. If the list has { "a", "b", "c" }, selecting "a" , the line edit should contain "a-1".

        Venkatesh VV Offline
        Venkatesh VV Offline
        Venkatesh V
        wrote on last edited by Venkatesh V
        #3

        @ajaxcrypto
        Hi,

        Once you select item, activated(int index) signal will be emitted connect the signal to some slot.

        // in slot do like this
        void onActivated(int index)
        {
        QString LineEditStr =ComboBox.itemText(index).append("-").append(QString::number(index+1));

        LineEdit.setText(LineEditStr);

        }

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        • A Offline
          A Offline
          ajaxcrypto
          wrote on last edited by
          #4

          Thank you for pointing me in the right direction. I styled the Line edit accordingly and displaying a modified selected item text.

          1 Reply Last reply
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