Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Get Qt Extensions
  • Unsolved
Collapse
Brand Logo
  1. Home
  2. Qt Development
  3. General and Desktop
  4. Overloaded function type error
Forum Updated to NodeBB v4.3 + New Features

Overloaded function type error

Scheduled Pinned Locked Moved Solved General and Desktop
24 Posts 5 Posters 7.2k Views 3 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • SGaistS Offline
    SGaistS Offline
    SGaist
    Lifetime Qt Champion
    wrote on last edited by
    #11

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

    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
    0
    • 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.

      1 Reply Last reply
      0
      • 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

        G 1 Reply Last reply
        0
        • 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.

          1 Reply Last reply
          0
          • 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

            G 1 Reply Last reply
            0
            • 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?

              1 Reply Last reply
              0
              • 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

                G 1 Reply Last reply
                0
                • 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?

                  1 Reply Last reply
                  0
                  • 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

                    G 1 Reply Last reply
                    0
                    • 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);
                      
                      
                      }
                      
                      
                      1 Reply Last reply
                      0
                      • 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

                        G 1 Reply Last reply
                        0
                        • 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.

                          1 Reply Last reply
                          0
                          • 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
                            1
                            • SGaistS SGaist

                              Yes, you can.

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

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

                              1 Reply Last reply
                              0

                              • Login

                              • Login or register to search.
                              • First post
                                Last post
                              0
                              • Categories
                              • Recent
                              • Tags
                              • Popular
                              • Users
                              • Groups
                              • Search
                              • Get Qt Extensions
                              • Unsolved