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Forum Update on Monday, May 27th 2025

Enter different images

Scheduled Pinned Locked Moved Unsolved General and Desktop
imageimage displayqgraphicsentrylist
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  • O Offline
    O Offline
    Omar Medhat
    wrote on 9 Dec 2019, 22:09 last edited by Omar Medhat 12 Sept 2019, 22:10
    #1

    In my program i should put a different image for every entry i create
    here is the code of create entry :
    void MainWindow::creatEntry()
    {
    auto entry = m_controller -> creatEntry();
    if (entry){
    ui->listWidget->addItem(entry->name());
    auto listItem =ui->listWidget->item(ui->listWidget->count()-1); //mohem min1:33
    m_entryMap.insert(listItem,entry);
    }
    }

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    0
    • S Offline
      S Offline
      SGaist
      Lifetime Qt Champion
      wrote on 9 Dec 2019, 22:19 last edited by
      #2

      Hi and welcome to devnet,

      What image are you talking about ?
      Where are they coming from ?

      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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      • O Offline
        O Offline
        Omar Medhat
        wrote on 9 Dec 2019, 22:20 last edited by
        #3

        This is the image open and display function :
        void MainWindow::on_openImage_clicked()
        {

         QString imagePath = QFileDialog::getOpenFileName(
              this,
              tr("Open File"),
              "",
              tr("JPEG (*.jpg *.jpeg);;PNG (*.png)")
              );
        imageObject = new QImage();
        imageObject->load(imagePath);
        
        image = QPixmap::fromImage(*imageObject);
        scene = new QGraphicsScene(this);
        scene->addPixmap(image);
        scene->setSceneRect(image.rect());
        ui->graphicsView->setScene(scene);
        

        }

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        • S Offline
          S Offline
          SGaist
          Lifetime Qt Champion
          wrote on 9 Dec 2019, 22:42 last edited by
          #4

          Don't create new scene for each image you want to add. What you are currently doing is replacing the scene each time.

          Create the scene once in the class constructor. In your function, just add your new images to it.

          On a side note, don't allocate your QImage on the heap. There's no need for that in the usual cases.
          On another note, there's no need for that QImage, you can create a QPixmap from a file path.

          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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          3
          • O Offline
            O Offline
            Omar Medhat
            wrote on 9 Dec 2019, 23:13 last edited by
            #5

            still having the same image for all entries

            i want to load different image for each entry

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            0
            • S Offline
              S Offline
              SGaist
              Lifetime Qt Champion
              wrote on 9 Dec 2019, 23:38 last edited by
              #6

              Then explain exactly how you create these entries and how you are associating an entry to an image.

              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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              0
              • O Offline
                O Offline
                Omar Medhat
                wrote on 10 Dec 2019, 10:00 last edited by
                #7

                i have menubar that have add entry with function above 1

                J 1 Reply Last reply 10 Dec 2019, 15:16
                0
                • O Omar Medhat
                  10 Dec 2019, 10:00

                  i have menubar that have add entry with function above 1

                  J Offline
                  J Offline
                  jsulm
                  Lifetime Qt Champion
                  wrote on 10 Dec 2019, 15:16 last edited by
                  #8

                  @Omar-Medhat Show your current void MainWindow::on_openImage_clicked() implementation. The previous one was wrong as @SGaist pointed out...

                  https://forum.qt.io/topic/113070/qt-code-of-conduct

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                  0

                  5/8

                  9 Dec 2019, 23:13

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