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How Can I make Clickable Label in My Project

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  • mrjjM mrjj

    @Ketan__Patel__0011

    Well then something went wrong then as it really is pr label.
    If you dont connect the label, clicking it will do nothing.

    • now i will click any label it will effect each and every label

    Then there is bug in your code. Connecting one instance of the label
    will not affect any other.

    Please show the code so we can correct it. :)

    Ketan__Patel__0011K Offline
    Ketan__Patel__0011K Offline
    Ketan__Patel__0011
    wrote on last edited by
    #5

    @mrjj

    I am Take A Three Label, in my ui

    ****************** My header files like this *********************
    #ifndef MAINWINDOW_H
    #define MAINWINDOW_H

    #include <QMainWindow>
    #include <QMouseEvent>
    #include <QMessageBox>
    #include <QDebug>

    namespace Ui {
    class MainWindow;
    }

    class MainWindow : public QMainWindow
    {
    Q_OBJECT

    public:
    explicit MainWindow(QWidget *parent = nullptr);
    ~MainWindow();

    private:
    Ui::MainWindow *ui;

    signals:
    void clicked();

    protected:
    void mousePressEvent(QMouseEvent* event);

    };

    #endif // MAINWINDOW_H


    ****************** My Sources file like this *********************

    #include "mainwindow.h"
    #include "ui_mainwindow.h"

    MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
    {
    ui->setupUi(this);
    connect(ui->label,SIGNAL(clicked()),this,SLOT(mousePressEvent()));
    }

    MainWindow::~MainWindow()
    {
    delete ui;
    }

    void MainWindow::mousePressEvent(QMouseEvent *event)
    {
    QMessageBox::information(this,"Message","WELCOME");
    emit clicked();
    }


    when i click any label message will be raised

    but i want this message for any only label1

    please Help Me for slove this problem

    1 Reply Last reply
    0
    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #6

      Hi,

      It has absolutely nothing to do with your labels. Wherever you'll click on the MainWindow it will show that message.

      If you only what to act on a specific QLabel either make that one use the custom class suggested by @mrjj or use an event filter to act only on that QLabel.

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

      Ketan__Patel__0011K 1 Reply Last reply
      5
      • SGaistS SGaist

        Hi,

        It has absolutely nothing to do with your labels. Wherever you'll click on the MainWindow it will show that message.

        If you only what to act on a specific QLabel either make that one use the custom class suggested by @mrjj or use an event filter to act only on that QLabel.

        Ketan__Patel__0011K Offline
        Ketan__Patel__0011K Offline
        Ketan__Patel__0011
        wrote on last edited by
        #7

        @SGaist no i will just click on label then message is raised

        or any other location i clicked that time message will not raised

        1 Reply Last reply
        0
        • Christian EhrlicherC Online
          Christian EhrlicherC Online
          Christian Ehrlicher
          Lifetime Qt Champion
          wrote on last edited by
          #8

          @Ketan__Patel__0011 said in How Can I make Clickable Label in My Project:

          no i will just click on label then message is raised

          I would dobut that since you connect the qlabel to a slot which is called on every mouse click as explained in the documentation. Use another slot name.

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

          Ketan__Patel__0011K 1 Reply Last reply
          3
          • Christian EhrlicherC Christian Ehrlicher

            @Ketan__Patel__0011 said in How Can I make Clickable Label in My Project:

            no i will just click on label then message is raised

            I would dobut that since you connect the qlabel to a slot which is called on every mouse click as explained in the documentation. Use another slot name.

            Ketan__Patel__0011K Offline
            Ketan__Patel__0011K Offline
            Ketan__Patel__0011
            wrote on last edited by
            #9

            @Christian-Ehrlicher
            sir

            Can you make One Example For Me ?

            plzzz

            1 Reply Last reply
            0
            • Christian EhrlicherC Online
              Christian EhrlicherC Online
              Christian Ehrlicher
              Lifetime Qt Champion
              wrote on last edited by
              #10

              @Ketan__Patel__0011 said in How Can I make Clickable Label in My Project:

              Can you make One Example For Me ?

              Of what? creating a member function with a different name than 'mousePressEvent()'? What's the problem?

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

              1 Reply Last reply
              2
              • mrjjM Offline
                mrjjM Offline
                mrjj
                Lifetime Qt Champion
                wrote on last edited by mrjj
                #11

                Hi
                Several things are wrong
                If you are using a plain QLabel, it wont have a clicked signal.
                Only using the class in the link it will have it. a plain QLabel cannot be clicked.

                So lets say you ARE using the new class then this can work.

                connect(ui->label,SIGNAL(clicked()),this,SLOT(LabelClicked()));
                
                void MainWindow::LabelClicked()
                {
                QMessageBox::information(this,"Message","WELCOME");
                }
                

                The reason it shows the message anywhere you click currently is due to the fact you added
                void MainWindow::mousePressEvent(QMouseEvent *event)
                for the MAINWINOW do it will trigger anywhere you click on it.
                So its only useful if you where to click anywhere on the whole Mainwindow and not
                on any labels.

                Ketan__Patel__0011K 1 Reply Last reply
                3
                • mrjjM mrjj

                  Hi
                  Several things are wrong
                  If you are using a plain QLabel, it wont have a clicked signal.
                  Only using the class in the link it will have it. a plain QLabel cannot be clicked.

                  So lets say you ARE using the new class then this can work.

                  connect(ui->label,SIGNAL(clicked()),this,SLOT(LabelClicked()));
                  
                  void MainWindow::LabelClicked()
                  {
                  QMessageBox::information(this,"Message","WELCOME");
                  }
                  

                  The reason it shows the message anywhere you click currently is due to the fact you added
                  void MainWindow::mousePressEvent(QMouseEvent *event)
                  for the MAINWINOW do it will trigger anywhere you click on it.
                  So its only useful if you where to click anywhere on the whole Mainwindow and not
                  on any labels.

                  Ketan__Patel__0011K Offline
                  Ketan__Patel__0011K Offline
                  Ketan__Patel__0011
                  wrote on last edited by
                  #12

                  @mrjj i was write same code in my program but its not worked

                  mrjjM 1 Reply Last reply
                  0
                  • Ketan__Patel__0011K Ketan__Patel__0011

                    @mrjj i was write same code in my program but its not worked

                    mrjjM Offline
                    mrjjM Offline
                    mrjj
                    Lifetime Qt Champion
                    wrote on last edited by
                    #13

                    @Ketan__Patel__0011

                    Well did you use the ClickableLabel or not ?

                    Ketan__Patel__0011K 1 Reply Last reply
                    0
                    • mrjjM mrjj

                      @Ketan__Patel__0011

                      Well did you use the ClickableLabel or not ?

                      Ketan__Patel__0011K Offline
                      Ketan__Patel__0011K Offline
                      Ketan__Patel__0011
                      wrote on last edited by
                      #14

                      @mrjj please Can you share me a Full code of project ?
                      like Header file as well as source file code

                      mrjjM A 2 Replies Last reply
                      0
                      • Ketan__Patel__0011K Ketan__Patel__0011

                        @mrjj please Can you share me a Full code of project ?
                        like Header file as well as source file code

                        mrjjM Offline
                        mrjjM Offline
                        mrjj
                        Lifetime Qt Champion
                        wrote on last edited by
                        #15

                        @Ketan__Patel__0011

                        Hi
                        there is no full project.
                        the wiki page shows what to put in the .cpp and .h.

                        However, if its also due to you not understanding how to use it.
                        I can make you a test project this evening if that helps?

                        Ketan__Patel__0011K 1 Reply Last reply
                        0
                        • Ketan__Patel__0011K Ketan__Patel__0011

                          @mrjj please Can you share me a Full code of project ?
                          like Header file as well as source file code

                          A Offline
                          A Offline
                          anil_arise
                          wrote on last edited by
                          #16

                          @Ketan__Patel__0011 Example :
                          Clickable QLabel

                          this link will be active for 2 days;
                          you need to use promote widget after add widget header and class name (**right click options in ui file)

                          Screenshot_2020-02-17_16-01-21.png

                          Ketan__Patel__0011K 2 Replies Last reply
                          2
                          • mrjjM mrjj

                            @Ketan__Patel__0011

                            Hi
                            there is no full project.
                            the wiki page shows what to put in the .cpp and .h.

                            However, if its also due to you not understanding how to use it.
                            I can make you a test project this evening if that helps?

                            Ketan__Patel__0011K Offline
                            Ketan__Patel__0011K Offline
                            Ketan__Patel__0011
                            wrote on last edited by
                            #17

                            @mrjj Hello Sir

                            i am try for last 2 days but nothing is happening

                            so plz sir help me

                            How can you share me a test project of clickable_Label ?

                            1 Reply Last reply
                            0
                            • A anil_arise

                              @Ketan__Patel__0011 Example :
                              Clickable QLabel

                              this link will be active for 2 days;
                              you need to use promote widget after add widget header and class name (**right click options in ui file)

                              Screenshot_2020-02-17_16-01-21.png

                              Ketan__Patel__0011K Offline
                              Ketan__Patel__0011K Offline
                              Ketan__Patel__0011
                              wrote on last edited by
                              #18

                              **@anil_arise hey Brother Thank you So much

                              It really Good Way My Problem is solved

                              Again Thank You So Much**

                              1 Reply Last reply
                              0
                              • A anil_arise

                                @Ketan__Patel__0011 Example :
                                Clickable QLabel

                                this link will be active for 2 days;
                                you need to use promote widget after add widget header and class name (**right click options in ui file)

                                Screenshot_2020-02-17_16-01-21.png

                                Ketan__Patel__0011K Offline
                                Ketan__Patel__0011K Offline
                                Ketan__Patel__0011
                                wrote on last edited by
                                #19

                                @anil_arise Can you share this link again plzzzzz

                                1 Reply Last reply
                                0

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