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add QLabel into QLineEdit

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  • M marlenet15

    @mrjj So if the user is allowed 100 characters for the QLineEdit do I have to put 100 A's?

    raven-worxR Offline
    raven-worxR Offline
    raven-worx
    Moderators
    wrote on last edited by
    #19

    @marlenet15
    if you are familiar with regular expressions you might want to use QRegExpValidator which will result in the same behavior
    And set it on the line edit.

    --- SUPPORT REQUESTS VIA CHAT WILL BE IGNORED ---
    If you have a question please use the forum so others can benefit from the solution in the future

    mrjjM 1 Reply Last reply
    1
    • raven-worxR raven-worx

      @marlenet15
      if you are familiar with regular expressions you might want to use QRegExpValidator which will result in the same behavior
      And set it on the line edit.

      mrjjM Offline
      mrjjM Offline
      mrjj
      Lifetime Qt Champion
      wrote on last edited by
      #20

      @raven-worx
      oh. So QRegExpValidator can have static text?

      raven-worxR 1 Reply Last reply
      0
      • mrjjM mrjj

        @raven-worx
        oh. So QRegExpValidator can have static text?

        raven-worxR Offline
        raven-worxR Offline
        raven-worx
        Moderators
        wrote on last edited by
        #21

        @mrjj
        Of course, a regular expression can have a static text included

        --- SUPPORT REQUESTS VIA CHAT WILL BE IGNORED ---
        If you have a question please use the forum so others can benefit from the solution in the future

        mrjjM M 2 Replies Last reply
        0
        • raven-worxR raven-worx

          @mrjj
          Of course, a regular expression can have a static text included

          mrjjM Offline
          mrjjM Offline
          mrjj
          Lifetime Qt Champion
          wrote on last edited by
          #22

          @raven-worx
          yes, but i didn't know it would show in lineEdit as Validator sounds so none visual :)

          1 Reply Last reply
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          • raven-worxR raven-worx

            @mrjj
            Of course, a regular expression can have a static text included

            M Offline
            M Offline
            marlenet15
            wrote on last edited by
            #23

            @raven-worx Can you please show me an example of that? I have never heard of that and I googled it and I didn't find anything about that :)

            raven-worxR 1 Reply Last reply
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            • M marlenet15

              @raven-worx Can you please show me an example of that? I have never heard of that and I googled it and I didn't find anything about that :)

              raven-worxR Offline
              raven-worxR Offline
              raven-worx
              Moderators
              wrote on last edited by
              #24

              @marlenet15
              you can see how to use QRegExpValidator in the link i've posted.
              Use a RegExp similiar to this one. There are tons of material on the web about regexp to learn.

              QRegExp("Comments\\: ([Jan|Feb|Mar|Apr|Jun|Jul|Aug|Sep|Nov|Dec] [0-3]?[0-9] [0-9]{4}\\: (.+))");
              

              This regexp is surely not perfect, but enough to get an idea and continue to learn the syntax i guess.

              --- SUPPORT REQUESTS VIA CHAT WILL BE IGNORED ---
              If you have a question please use the forum so others can benefit from the solution in the future

              kshegunovK M 2 Replies Last reply
              0
              • raven-worxR raven-worx

                @marlenet15
                you can see how to use QRegExpValidator in the link i've posted.
                Use a RegExp similiar to this one. There are tons of material on the web about regexp to learn.

                QRegExp("Comments\\: ([Jan|Feb|Mar|Apr|Jun|Jul|Aug|Sep|Nov|Dec] [0-3]?[0-9] [0-9]{4}\\: (.+))");
                

                This regexp is surely not perfect, but enough to get an idea and continue to learn the syntax i guess.

                kshegunovK Offline
                kshegunovK Offline
                kshegunov
                Moderators
                wrote on last edited by
                #25

                @raven-worx
                If I may interject, [Jan|Feb|Mar|Apr|Jun|Jul|Aug|Sep|Nov|Dec] is not okay for matching one should use a (non-capturing) group instead. i.e: (?:Jan|Feb|Mar|Apr|Jun|Jul|Aug|Sep|Nov|Dec).

                Read and abide by the Qt Code of Conduct

                1 Reply Last reply
                0
                • ValentinMicheletV Offline
                  ValentinMicheletV Offline
                  ValentinMichelet
                  wrote on last edited by
                  #26

                  My two cents: if you have Qt5, consider using QRegularExpressionValidator and QRegularExpression instead, since the motor has been remarkably improved.

                  1 Reply Last reply
                  0
                  • raven-worxR raven-worx

                    @marlenet15
                    you can see how to use QRegExpValidator in the link i've posted.
                    Use a RegExp similiar to this one. There are tons of material on the web about regexp to learn.

                    QRegExp("Comments\\: ([Jan|Feb|Mar|Apr|Jun|Jul|Aug|Sep|Nov|Dec] [0-3]?[0-9] [0-9]{4}\\: (.+))");
                    

                    This regexp is surely not perfect, but enough to get an idea and continue to learn the syntax i guess.

                    M Offline
                    M Offline
                    marlenet15
                    wrote on last edited by marlenet15
                    #27

                    @raven-worx I just tried it and the amazing thing is the cursor moves automatically moves to the right of the date. However, I can still edit the date and I don't want it to be edited whatsoever. When the mouse clicks the QLineEdit, I want it so that the cursor starts right after the date text. :( Is it possible for this? Thank you so much for you help!

                    This is the code I used:

                    QRegExp rx("Comments\\: ([Jan|Feb|Mar|Apr|Jun|Jul|Aug|Sep|Nov|Dec] [0-3]?[0-9] [0-9]{4}\\: (.+))");
                    QValidator *validator = new QRegExpValidator(rx, this);
                    ui->lineEdit->setValidator(validator);
                    
                    QDate date = QDate::currentDate();
                    QTime time = QTime::currentTime();
                    ui->lineEdit->setText(date.toString("MMM dd yyyy")+" "+time.toString("hh:mm:ss"));
                    
                    raven-worxR 1 Reply Last reply
                    0
                    • M marlenet15

                      @raven-worx I just tried it and the amazing thing is the cursor moves automatically moves to the right of the date. However, I can still edit the date and I don't want it to be edited whatsoever. When the mouse clicks the QLineEdit, I want it so that the cursor starts right after the date text. :( Is it possible for this? Thank you so much for you help!

                      This is the code I used:

                      QRegExp rx("Comments\\: ([Jan|Feb|Mar|Apr|Jun|Jul|Aug|Sep|Nov|Dec] [0-3]?[0-9] [0-9]{4}\\: (.+))");
                      QValidator *validator = new QRegExpValidator(rx, this);
                      ui->lineEdit->setValidator(validator);
                      
                      QDate date = QDate::currentDate();
                      QTime time = QTime::currentTime();
                      ui->lineEdit->setText(date.toString("MMM dd yyyy")+" "+time.toString("hh:mm:ss"));
                      
                      raven-worxR Offline
                      raven-worxR Offline
                      raven-worx
                      Moderators
                      wrote on last edited by raven-worx
                      #28

                      @marlenet15

                      Try this:

                      QString dateTimeStr = QDateTime::currentDateTime().toString("MMM dd yyyy hh:mm:ss");
                      QString rxStr("Comments\\: %1\\: (.+)");
                      QRegExp rx( rxStr.arg(dateTimeStr), Qt::CaseSensitive, QRegExp::RegExp2 );
                      QValidator *validator = new QRegExpValidator(rx, this);
                      ui->lineEdit->setValidator(validator);
                      

                      --- SUPPORT REQUESTS VIA CHAT WILL BE IGNORED ---
                      If you have a question please use the forum so others can benefit from the solution in the future

                      M 1 Reply Last reply
                      1
                      • raven-worxR raven-worx

                        @marlenet15

                        Try this:

                        QString dateTimeStr = QDateTime::currentDateTime().toString("MMM dd yyyy hh:mm:ss");
                        QString rxStr("Comments\\: %1\\: (.+)");
                        QRegExp rx( rxStr.arg(dateTimeStr), Qt::CaseSensitive, QRegExp::RegExp2 );
                        QValidator *validator = new QRegExpValidator(rx, this);
                        ui->lineEdit->setValidator(validator);
                        
                        M Offline
                        M Offline
                        marlenet15
                        wrote on last edited by
                        #29

                        @raven-worx I can still edit the date_time stamp :(

                        kshegunovK 1 Reply Last reply
                        0
                        • M marlenet15

                          @raven-worx I can still edit the date_time stamp :(

                          kshegunovK Offline
                          kshegunovK Offline
                          kshegunov
                          Moderators
                          wrote on last edited by kshegunov
                          #30

                          @marlenet15
                          Hello,
                          I believe you are going to need an input mask after all. I think you should try something like this:

                          QString date = QDateTime::currentDateTime().toString("MMM dd yyyy hh:mm:ss");
                          QString heading = QStringLiteral("Comments %1: %2").arg(date); //< Construct the heading
                          QRegularExpression escaperx(QStringLiteral("([AaNnXx09Dd#HhBb><!\\\\]{1})")); //< Escape regex for input mask special characters
                          heading.replace(escaperx, QStringLiteral("\\\\1")); //< Escape the input mask
                          
                          QString mask = heading.arg("", 255, QLatin1Char('x')); //< Add 255 optional characters to the mask for the user to fill.
                          _dateLabel->setInputMask(mask);
                          

                          Then if you wish you could add a validator to ensure the user has entered correct data.

                          Kind regards.

                          EDIT:
                          I had forgotten to add the actual characters that the user can fill to the mask, but I edited the example and it should be correct now.

                          Read and abide by the Qt Code of Conduct

                          M 1 Reply Last reply
                          2
                          • kshegunovK kshegunov

                            @marlenet15
                            Hello,
                            I believe you are going to need an input mask after all. I think you should try something like this:

                            QString date = QDateTime::currentDateTime().toString("MMM dd yyyy hh:mm:ss");
                            QString heading = QStringLiteral("Comments %1: %2").arg(date); //< Construct the heading
                            QRegularExpression escaperx(QStringLiteral("([AaNnXx09Dd#HhBb><!\\\\]{1})")); //< Escape regex for input mask special characters
                            heading.replace(escaperx, QStringLiteral("\\\\1")); //< Escape the input mask
                            
                            QString mask = heading.arg("", 255, QLatin1Char('x')); //< Add 255 optional characters to the mask for the user to fill.
                            _dateLabel->setInputMask(mask);
                            

                            Then if you wish you could add a validator to ensure the user has entered correct data.

                            Kind regards.

                            EDIT:
                            I had forgotten to add the actual characters that the user can fill to the mask, but I edited the example and it should be correct now.

                            M Offline
                            M Offline
                            marlenet15
                            wrote on last edited by
                            #31

                            @kshegunov it works thank you very much and to everyone!

                            kshegunovK 1 Reply Last reply
                            0
                            • M marlenet15

                              @kshegunov it works thank you very much and to everyone!

                              kshegunovK Offline
                              kshegunovK Offline
                              kshegunov
                              Moderators
                              wrote on last edited by
                              #32

                              @marlenet15
                              No problem, I'm glad I could be of assistance.

                              Read and abide by the Qt Code of Conduct

                              1 Reply Last reply
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