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Parentheses expected, but code has sets of parentheses

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  • JKSHJ JKSH

    @micha_eleric CGUI::Btn_test_clicked needs parentheses.

    But anyway, the new syntax is more recommended nowadays: https://doc.qt.io/qt-5/signalsandslots-syntaxes.html

    M Offline
    M Offline
    micha_eleric
    wrote on last edited by
    #3

    @JKSH said in Parentheses expected, but code has sets of parentheses:

    parentheses

    ????
    looks like it has parentheses

    JKSHJ 1 Reply Last reply
    0
    • Kent-DorfmanK Offline
      Kent-DorfmanK Offline
      Kent-Dorfman
      wrote on last edited by Kent-Dorfman
      #4

      SIGNAL and SLOT are macros. you should not put a space before their opening paren.

      M 1 Reply Last reply
      1
      • Kent-DorfmanK Kent-Dorfman

        SIGNAL and SLOT are macros. you should not put a space before their opening paren.

        M Offline
        M Offline
        micha_eleric
        wrote on last edited by
        #5

        @Kent-Dorfman said in Parentheses expected, but code has sets of parentheses:

        SIGNAL and SLOT are macros. you should not put a space before their opening paren.

        i removed spaces, and same errors

        Kent-DorfmanK 1 Reply Last reply
        0
        • M micha_eleric

          @Kent-Dorfman said in Parentheses expected, but code has sets of parentheses:

          SIGNAL and SLOT are macros. you should not put a space before their opening paren.

          i removed spaces, and same errors

          Kent-DorfmanK Offline
          Kent-DorfmanK Offline
          Kent-Dorfman
          wrote on last edited by
          #6

          @micha_eleric See @JKSH response above.

          M 1 Reply Last reply
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          • Kent-DorfmanK Kent-Dorfman

            @micha_eleric See @JKSH response above.

            M Offline
            M Offline
            micha_eleric
            wrote on last edited by
            #7

            @Kent-Dorfman said in Parentheses expected, but code has sets of parentheses:

            @micha_eleric See @JKSH response above.

            i did, and i responded.

            1 Reply Last reply
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            • M micha_eleric

              @JKSH said in Parentheses expected, but code has sets of parentheses:

              parentheses

              ????
              looks like it has parentheses

              JKSHJ Offline
              JKSHJ Offline
              JKSH
              Moderators
              wrote on last edited by
              #8

              @micha_eleric said in Parentheses expected, but code has sets of parentheses:

              ????
              looks like it has parentheses

              • clicked() <-- has parentheses
              • CGUI::Btn_test_clicked <-- doesn't have parentheses

              And did you read the link I gave you?

              Qt Doc Search for browsers: forum.qt.io/topic/35616/web-browser-extension-for-improved-doc-searches

              M 1 Reply Last reply
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              • JKSHJ JKSH

                @micha_eleric said in Parentheses expected, but code has sets of parentheses:

                ????
                looks like it has parentheses

                • clicked() <-- has parentheses
                • CGUI::Btn_test_clicked <-- doesn't have parentheses

                And did you read the link I gave you?

                M Offline
                M Offline
                micha_eleric
                wrote on last edited by
                #9

                @JKSH said in Parentheses expected, but code has sets of parentheses:

                @micha_eleric said in Parentheses expected, but code has sets of parentheses:

                ????
                looks like it has parentheses

                • clicked() <-- has parentheses
                • CGUI::Btn_test_clicked <-- doesn't have parentheses

                And did you read the link I gave you?

                thank you for the explanation.
                and yes, i am reading the link you posted. got questions, trying to figure it out.

                JKSHJ 1 Reply Last reply
                0
                • M micha_eleric

                  error:

                  QObject::connect: Parentheses expected, slot QMainWindow::CGUI::Btn_test_clicked in ../GUI/CGUI.cpp:2518
                  QObject::connect:  (sender name:   'pushButton_22')
                  QObject::connect:  (receiver name: 'MainWindow')
                  Press <RETURN> to close this window...
                  

                  code at line 2518:

                  ui->pushButton_22->connect(ui->pushButton_22, SIGNAL (clicked()),this, SLOT (CGUI::Btn_test_clicked) );
                  

                  is it complaining about somewhere else?

                  JonBJ Offline
                  JonBJ Offline
                  JonB
                  wrote on last edited by
                  #10

                  @micha_eleric
                  Your original, old-style should have read like this:

                  ui->pushButton_22->connect(ui->pushButton_22, SIGNAL(clicked()), this, SLOT(CGUI::Btn_test_clicked()) );
                  

                  And the preferable, new-style equivalent would be:

                  ui->pushButton_22->connect(ui->pushButton_22, &QPushButton::clicked, this, &CGUI::Btn_test_clicked);
                  
                  M 1 Reply Last reply
                  4
                  • JonBJ JonB

                    @micha_eleric
                    Your original, old-style should have read like this:

                    ui->pushButton_22->connect(ui->pushButton_22, SIGNAL(clicked()), this, SLOT(CGUI::Btn_test_clicked()) );
                    

                    And the preferable, new-style equivalent would be:

                    ui->pushButton_22->connect(ui->pushButton_22, &QPushButton::clicked, this, &CGUI::Btn_test_clicked);
                    
                    M Offline
                    M Offline
                    micha_eleric
                    wrote on last edited by micha_eleric
                    #11

                    @JonB

                    thank you. i was about half way there

                    1 Reply Last reply
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                    • M micha_eleric

                      @JKSH said in Parentheses expected, but code has sets of parentheses:

                      @micha_eleric said in Parentheses expected, but code has sets of parentheses:

                      ????
                      looks like it has parentheses

                      • clicked() <-- has parentheses
                      • CGUI::Btn_test_clicked <-- doesn't have parentheses

                      And did you read the link I gave you?

                      thank you for the explanation.
                      and yes, i am reading the link you posted. got questions, trying to figure it out.

                      JKSHJ Offline
                      JKSHJ Offline
                      JKSH
                      Moderators
                      wrote on last edited by
                      #12

                      @micha_eleric said in Parentheses expected, but code has sets of parentheses:

                      thank you for the explanation.

                      You're most welcome.

                      and yes, i am reading the link you posted. got questions, trying to figure it out.

                      Feel free to post your questions here.

                      Qt Doc Search for browsers: forum.qt.io/topic/35616/web-browser-extension-for-improved-doc-searches

                      1 Reply Last reply
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