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Overloaded function type error

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  • SGaistS SGaist

    Can you give a more complete description of what you are trying to achieve ?

    G Offline
    G Offline
    gabor53
    wrote on last edited by
    #12

    @SGaist
    This part displays the DB data in a table view where the user can review and correct data. Some of the fields are corrected as text fields, some of them as drop downs and I also have an image field. That's why I have the mydelegate and image delegate classes to handle the different editors. My struggle is to pass the image file name to a function where the corrected image can be saved to the DB replacing the old, incorrect image.
    The problem is that the original delegate functions are const functions and as I most likely incorrectly handle them I keep getting different error messages.
    Thank you for your help.

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    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #13

      Then there's no need for a "do-it-all" delegate.

      Assign your delegate only to the column where it make sense. That will simplify your life.

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

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      • SGaistS SGaist

        Then there's no need for a "do-it-all" delegate.

        Assign your delegate only to the column where it make sense. That will simplify your life.

        G Offline
        G Offline
        gabor53
        wrote on last edited by
        #14

        @SGaist
        Which is the better: to have a separate delegate for each column where needed or have one delegate for each type of input method ? (For example one delegate handles all dropdowns, one all check idea etc.)
        Thank you.

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        • SGaistS Offline
          SGaistS Offline
          SGaist
          Lifetime Qt Champion
          wrote on last edited by
          #15

          You only need as many delegate as you have special cases.

          Note that I didn't say "as many as the column count". If you have several columns of a special type then juste instantiate one delegate per column.

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

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          • SGaistS SGaist

            You only need as many delegate as you have special cases.

            Note that I didn't say "as many as the column count". If you have several columns of a special type then juste instantiate one delegate per column.

            G Offline
            G Offline
            gabor53
            wrote on last edited by
            #16

            @SGaist
            How can I use the model directly to save the newly picked image? Is there a sample code you know about?

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            • SGaistS Offline
              SGaistS Offline
              SGaist
              Lifetime Qt Champion
              wrote on last edited by
              #17

              Well, you have a pointer to your model in setModelData, so why not use it ?

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

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              • SGaistS SGaist

                Well, you have a pointer to your model in setModelData, so why not use it ?

                G Offline
                G Offline
                gabor53
                wrote on last edited by
                #18

                @SGaist
                I started to use the pointer in setModelData. Added

                oid ImageDelegate::setModelData(QWidget* editor, QAbstractItemModel* model, const QModelIndex& index) const {
                  ImagePickButton* imgPick = qobject_cast<ImagePickButton*>(editor);
                  Q_ASSERT(imgPick);
                
                  if(imgPick->selectedFile().isEmpty()) {
                    model->setData(index, QVariant(), Qt::UserRole);
                    model->setData(index, QVariant(), Qt::DecorationRole);
                  } else {
                    model->setData(index, imgPick->selectedFile(), Qt::UserRole);
                    model->setData(index, QIcon(imgPick->selectedFile()), Qt::DecorationRole);
                    //Adding image to db
                
                    qDebug() << "Selected file: " << imgPick->selectedFile();
                    qDebug() << "Selected file name: " << imgPick->m_selectedFile;
                //new
                    model->setData (index, imgPick->selectedFile (), Qt::DecorationRole);
                  }
                

                Causes no error, but doesn't save the img to the db ether. What am I supposed to use to commit the changes to the db?

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                • SGaistS Offline
                  SGaistS Offline
                  SGaist
                  Lifetime Qt Champion
                  wrote on last edited by
                  #19

                  What kind of model are you using ?

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

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                  • SGaistS SGaist

                    What kind of model are you using ?

                    G Offline
                    G Offline
                    gabor53
                    wrote on last edited by
                    #20

                    @SGaist
                    I use QStandardItemModel.

                    #include "fixdb.h"
                    #include "ui_fixdb.h"
                    #include <QDebug>
                    
                    FixDb::FixDb(QWidget* parent) :
                      QDialog(parent),
                      ui(new Ui::FixDb) {
                      ui->setupUi(this);
                    
                      correctFriend ();
                    }
                    
                    FixDb::~FixDb() {
                      delete ui;
                    }
                    
                    void FixDb::correctFriend() {
                      QSqlQuery query_fix ("SELECT * FROM Items ORDER BY name asc");
                    
                      if(query_fix.isActive () == true) {
                        qDebug() << "The query_fix is active!";
                      } else {
                        qDebug() << "The query_fix is NOT active!" << query_fix.lastError ();
                      }
                    
                      QStandardItemModel* fixModel = new QStandardItemModel(this);
                      ui->tableView_Fix->setModel (fixModel);
                    
                    
                      ui->tableView_Fix->setItemDelegateForColumn(3, new ImageDelegate(this));
                    
                    
                      for(int row1 = 0; query_fix.next (); row1++) {
                        if(row1 == 0) {
                          const QSqlRecord qRec = query_fix.record();
                          qDebug() << "The number of records (MainWindow): " << qRec;
                          fixModel->insertColumns (0, qRec.count());
                          qDebug() << "fixdb record count: " << qRec.count ();
                    
                        }
                    
                        fixModel->insertRow (row1);
                        fixModel->setData (fixModel->index (row1, 0), query_fix.value (0));
                        fixModel->setData (fixModel->index (row1, 1), query_fix.value (1));
                        fixModel->setData (fixModel->index (row1, 2), query_fix.value (11));
                    
                        fixPixmap.loadFromData (query_fix.value (2).toByteArray ());
                        fixPixmap = fixPixmap.scaled (100, 100, Qt::KeepAspectRatio);
                    
                        fixModel->setData (fixModel->index (row1, 3), fixPixmap, Qt::DecorationRole);
                        fixModel->setData (fixModel->index (row1, 4), query_fix.value (11));
                        fixModel->setData (fixModel->index (row1, 5), query_fix.value (10));
                        fixModel->setData (fixModel->index (row1, 6), query_fix.value (3));
                        fixModel->setData (fixModel->index(row1, 7), query_fix.value (4));
                        fixModel->setData (fixModel->index (row1, 8), query_fix.value (12));
                        fixModel->setData (fixModel->index (row1, 9), query_fix.value (7));
                        fixModel->setData (fixModel->index (row1, 10), query_fix.value (8));
                        fixModel->setData (fixModel->index (row1, 11), query_fix.value (9));
                    
                        ui->tableView_Fix->setRowHeight (row1, 100);
                      }
                    
                      ui->tableView_Fix->horizontalHeader ()->setStyleSheet ("QHeaderView{font: 14pt Arial; color: blue; font-weight: bold; text-decoration: underline;}");
                      ui->tableView_Fix->verticalHeader ()->setVisible (false);
                      ui->tableView_Fix->setAlternatingRowColors (true);
                      ui->tableView_Fix->setStyleSheet ("alternate-background-color: rgb(224,255,248); background-color: white; font: 14pt Arial; ");
                    
                      fixModel->setHeaderData (0, Qt::Horizontal, QObject::tr ("ID"));
                      fixModel->setHeaderData (1, Qt::Horizontal, QObject::tr ("Name"));
                      fixModel->setHeaderData (2, Qt::Horizontal, QObject::tr ("What"));
                      fixModel->setHeaderData (3, Qt::Horizontal, QObject::tr ("Image"));
                      fixModel->setHeaderData (4, Qt::Horizontal, QObject::tr ("Material"));
                      fixModel->setHeaderData (5, Qt::Horizontal, QObject::tr ("Color"));
                      fixModel->setHeaderData (6, Qt::Horizontal, QObject::tr ("Description"));
                      fixModel->setHeaderData (7, Qt::Horizontal, QObject::tr ("Adoption Date"));
                      fixModel->setHeaderData (8, Qt::Horizontal, QObject::tr ("Signed by"));
                      fixModel->setHeaderData (9, Qt::Horizontal, QObject::tr ("History"));
                      fixModel->setHeaderData (10, Qt::Horizontal, QObject::tr ("Age"));
                      fixModel->setHeaderData (11, Qt::Horizontal, QObject::tr ("Notes"));
                    
                      ui->tableView_Fix->setColumnWidth (0, 60);
                      ui->tableView_Fix->setColumnWidth (1, 120);
                      ui->tableView_Fix->setColumnWidth (2, 150);
                      ui->tableView_Fix->setColumnWidth (3, 100);
                      ui->tableView_Fix->setColumnWidth (4, 130);
                      ui->tableView_Fix->setColumnWidth (5, 120);
                      ui->tableView_Fix->setColumnWidth (6, 400);
                      ui->tableView_Fix->setColumnWidth (7, 150);
                      ui->tableView_Fix->setColumnWidth (8, 200);
                      ui->tableView_Fix->setColumnWidth (9, 400);
                      ui->tableView_Fix->setColumnWidth (10, 130);
                      ui->tableView_Fix->setColumnWidth (11, 300);
                    
                      ui->tableView_Fix->setWordWrap (true);
                    
                    
                    }
                    
                    
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                    • SGaistS Offline
                      SGaistS Offline
                      SGaist
                      Lifetime Qt Champion
                      wrote on last edited by
                      #21

                      Why not use a QSqlTableModel ?

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

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                      • SGaistS SGaist

                        Why not use a QSqlTableModel ?

                        G Offline
                        G Offline
                        gabor53
                        wrote on last edited by
                        #22

                        @SGaist
                        I had difficulties with the elegates. Can I still use different delegates for some columns? If so I will redo that section.

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                        • SGaistS Offline
                          SGaistS Offline
                          SGaist
                          Lifetime Qt Champion
                          wrote on last edited by
                          #23

                          Yes, you can.

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

                          G 1 Reply Last reply
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                          • SGaistS SGaist

                            Yes, you can.

                            G Offline
                            G Offline
                            gabor53
                            wrote on last edited by
                            #24

                            @SGaist
                            Thank you.
                            I'm working on it.

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