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add QLabel into QLineEdit

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  • raven-worxR raven-worx

    i also think the input mask is actually the best way, or maybe even better a custom QValidator.
    But to just add something to the (rather ugly) QLabel idea: You could use QLineEdit::setTextMargins() to move the left-most position of the cursor.

    M Offline
    M Offline
    marlenet15
    wrote on last edited by
    #15

    @raven-worx yes I agree the input mask Is the best way to go. However, it's a new concept for me since I never heard of it. That is why I am very confused to how it works.

    mrjjM 1 Reply Last reply
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    • M marlenet15

      @raven-worx yes I agree the input mask Is the best way to go. However, it's a new concept for me since I never heard of it. That is why I am very confused to how it works.

      mrjjM Offline
      mrjjM Offline
      mrjj
      Lifetime Qt Champion
      wrote on last edited by
      #16

      @raven-worx said:
      setTextMargins
      +1 That would work for custom control.

      yes, you would need to put \ into your date.
      the AAAA is input specifier .
      Go to a LineEdit and find inputmask property and press F1 to read about them.

      M 1 Reply Last reply
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      • mrjjM mrjj

        @raven-worx said:
        setTextMargins
        +1 That would work for custom control.

        yes, you would need to put \ into your date.
        the AAAA is input specifier .
        Go to a LineEdit and find inputmask property and press F1 to read about them.

        M Offline
        M Offline
        marlenet15
        wrote on last edited by marlenet15
        #17

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

        mrjjM raven-worxR 2 Replies Last reply
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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?

          mrjjM Offline
          mrjjM Offline
          mrjj
          Lifetime Qt Champion
          wrote on last edited by mrjj
          #18

          @marlenet15 erhm, yes I think. maybe there is way
          but inputmasks are normally used for short input like date
          or iP etc

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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
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              • 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
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                • 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 :)

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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
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                        • 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
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                          • 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
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                              • 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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