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[solved]resizing vertical header

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  • EddyE Offline
    EddyE Offline
    Eddy
    wrote on last edited by
    #4

    there is a problem with your image link. it doesn't show up.

    Qt Certified Specialist
    www.edalsolutions.be

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    • P Offline
      P Offline
      p91paul
      wrote on last edited by
      #5

      sorry, corrected (I hope :D)

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      • EddyE Offline
        EddyE Offline
        Eddy
        wrote on last edited by
        #6

        "The frozen column example":http://doc.qt.nokia.com/latest/itemviews-frozencolumn.html is not exactly what you want, but the same techniques can be used here.

        There are also 2 QTables that need to be in sync with each orther.

        Qt Certified Specialist
        www.edalsolutions.be

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        • G Offline
          G Offline
          giesbert
          wrote on last edited by
          #7

          You can try "QTableView::setColumnWidth":http://doc.qt.nokia.com/4.7/qtableview.html#setColumnWidth and set the corresponding width.

          Nokia Certified Qt Specialist.
          Programming Is Like Sex: One mistake and you have to support it for the rest of your life. (Michael Sinz)

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          • EddyE Offline
            EddyE Offline
            Eddy
            wrote on last edited by
            #8

            I think Paul wants something like this :
            !http://dl.dropbox.com/u/33544011/2Tables.PNG(2 tables)!

            Is that correct?

            Qt Certified Specialist
            www.edalsolutions.be

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            • P Offline
              P Offline
              p91paul
              wrote on last edited by
              #9

              yes!
              I solved now inheriting from qheaderview and using a method to set sizehint's width, and I override sizeHint() to return a Qsize with parent's height and just set width. I consider this an ugly fix, but it works.

              what's your solution (probably better)?

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              • EddyE Offline
                EddyE Offline
                Eddy
                wrote on last edited by
                #10

                I didn't have a solution 13 minutes ago. I was just testing some things for which a made a ui.

                I don't know if it's better, but I didn't need to subclass :
                in the constructor of the form/mainwindow where you use the 3 tables :

                @ qDebug() << ui->tableWidget->verticalHeader()->sizeHint().width(); //get width of VHeader
                qDebug() <<ui->tableWidget->columnWidth(0);//get width of first column

                int HeaderWidth2 = ui->tableWidget->verticalHeader()->sizeHint().width() + ui->tableWidget->columnWidth(0);
                
                ui->tableWidget_2->verticalHeader()->setFixedWidth(HeaderWidth2);//set width of second VHeader@
                

                This doen't take in to account that the widths could be changed afterwards. In that case we will need some signals and slots.

                Anyway I hope it helps in some way.

                Qt Certified Specialist
                www.edalsolutions.be

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                • P Offline
                  P Offline
                  p91paul
                  wrote on last edited by
                  #11

                  Well, your solution is better because you haven't subclassed, but it requires the same workaround when resizing: when I resize the header (with signal/slot stuff), in my and your solution the first column ("one" in your example) is not pushed to the right.
                  instead, the header covers the column.

                  As an ugly fix, I have to do something like
                  @ int colw=ui->tblTotals->columnWidth(0);
                  ui->tblTotals->setColumnWidth(0,0);
                  ui->tblTotals->setColumnWidth(0,colw);@

                  and the table is repainted correctly.
                  thanks anyway.

                  Paolo

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                  • EddyE Offline
                    EddyE Offline
                    Eddy
                    wrote on last edited by
                    #12

                    I understand now what you mean about the column resizing thing.

                    Glad it is working!

                    Have Qt fun!

                    Qt Certified Specialist
                    www.edalsolutions.be

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                    • A Offline
                      A Offline
                      alexisdm
                      wrote on last edited by
                      #13

                      I think you have to call the slot QTableView::updateGeometries() after resizing the header.
                      Because that slot is protected, you have to call it through QMetaObject::invokeMethod.
                      Assuming the 2 tables are named ui->tblHours and ui->tblTotals:
                      @// In the constructor
                      ...
                      // The real column resizing is done asynchronously,
                      // so you have to delay the slot with Qt::QueuedConnection
                      connect(ui->tblHours->horizontalHeader(), SIGNAL(sectionResized(int,int,int)),
                      SLOT(resizeHeader()), Qt::QueuedConnection);
                      ...

                      void YourClass::resizeHeader() {
                      int width = ui->tblHours->verticalHeader()->width() +
                      ui->tblHours->columnWidth(0);
                      ui->tblTotals->verticalHeader()->setFixedWidth(width);
                      QMetaObject::invokeMethod(ui->tblTotals, "updateGeometries");
                      }@

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                      • P Offline
                        P Offline
                        p91paul
                        wrote on last edited by
                        #14

                        thanks a lot alexisdm. this worked for me. this approach has the advantage to be more clear.
                        very strange thing the QMetaObject one, it breaks everything about protected/private and so on. I think in a theorical OOP it has to be avoided, but for actual programming is very useful :D

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                        • EddyE Offline
                          EddyE Offline
                          Eddy
                          wrote on last edited by
                          #15

                          @Alexis

                          good one!

                          Qt Certified Specialist
                          www.edalsolutions.be

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