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Using variables to acces UI

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ui objectvariable
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  • P Offline
    P Offline
    plymouth21
    wrote on 17 Apr 2016, 12:35 last edited by
    #1

    HI Guys,
    I'm new to Qt

    I have about 50 buttons in my UI, and I need to modify them if the certain condition is met,

    void aaa::on_push_button1_clicked()
    {
    ui->pushButton_00->setEnabled(true);
    }

    this one works well, but so I wil have to manually check for every button, so I want to replace pushButton_00 with a variable, but I can't get it to work

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    • M Offline
      M Offline
      mrjj
      Lifetime Qt Champion
      wrote on 17 Apr 2016, 13:30 last edited by mrjj
      #2

      Hi and welcome
      There is a special sender() in a slot you can use to know which button was the sender of
      the clicked() signal

      void aaa::on_push_button1_clicked()
      QPushButton *butt=qobject_cast<QPushButton *> ( sender() ) ;
      if (butt) {
      }

      that way u can use a variable and not ui->NAME

      All you buttons should be connected to same slot then.

      You could do that after setupUI()

      QList<QPushButton *> list = this->findChildren<QPushButton *>();
      foreach(QPushButton *b, list) {
      connect(b, XXX
      }

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      17 Apr 2016, 12:35

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