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  4. [solved]Setting Images in QListWidget
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[solved]Setting Images in QListWidget

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  • SGaistS Offline
    SGaistS Offline
    SGaist
    Lifetime Qt Champion
    wrote on last edited by
    #6

    Can you post your constructor code (the one containing this connect statement) ?

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    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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    • V Offline
      V Offline
      venkatesh
      wrote on last edited by
      #7

      @ connect(ui->ImportImages,SIGNAL(clicked()),&listObject_, SLOT(setData_())); @

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      • SGaistS Offline
        SGaistS Offline
        SGaist
        Lifetime Qt Champion
        wrote on last edited by
        #8

        Not just the same connect statement, the complete constructor code

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        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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        • V Offline
          V Offline
          venkatesh
          wrote on last edited by
          #9

          @

          ImageRegistration::ImageRegistration(QWidget *parent) :
          QWidget(parent),
          ui(new Ui::ImageRegistration)
          {

          ui->setupUi(this);
          ui->ExportTransformationMatrix->setStyleSheet("border-style:inset");
          ui->ExportTransformationMatrix->setStyleSheet("border-width: 2px");
          
          
          ui->ManualRegistrationView->setStyleSheet(" border: 2px solid rgb(130,170,245)");
          ui->StationaryImageView->setStyleSheet(" border: 2px solid rgb(130,170,245)");
          ui->MovingImageView->setStyleSheet("border: 2px solid rgb(130,170,245)");
          ui->ZoomImage->setStyleSheet("border: 2px solid black ");
          
          connect(ui->ZoomImage,SIGNAL(valueChanged(int)),this,SLOT(updateTransform()));
          connect(ui->RotateImage,SIGNAL(valueChanged(int)),this,SLOT(updateTransform()));
          connect(ui->ImportImages,SIGNAL(clicked()),&listObject_, SLOT(setData_()));
          

          }

          @

          I have initialised the object in header as @ listWidget listObject_; @

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          • SGaistS Offline
            SGaistS Offline
            SGaist
            Lifetime Qt Champion
            wrote on last edited by
            #10

            You don't show listObject_.

            And since it's not in any layout, it won't be automatically placed/resized for you

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            Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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            • V Offline
              V Offline
              venkatesh
              wrote on last edited by
              #11

              Hi,

              Thanks for the response. When i added
              @listObject_.show(); @ its shown in separate window, how can i make it visible in listWidget? I thought when we create an object, and apply the slot it would be placed in the class from which object is created. If we have to specify it manually is there a way to do it?

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              • SGaistS Offline
                SGaistS Offline
                SGaist
                Lifetime Qt Champion
                wrote on last edited by
                #12

                It won't automagically be layouted because you create it in a widget.

                You need to either add it to your ui file (using designer) or add it to your widgets layout.

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                Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                • V Offline
                  V Offline
                  venkatesh
                  wrote on last edited by
                  #13

                  Hi,
                  I have already promoted listWidget class to the designer. How can i promote its object ? I tried the following but no use.How else can i add it to the ui

                  @

                  ui->ImageList=&listObject;
                  ui->ImageList->show();

                  @

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                  • V Offline
                    V Offline
                    venkatesh
                    wrote on last edited by
                    #14

                    Hi,

                    Solved this problem using the following in

                    ImageRegistration constructor

                    @
                    listWidget *listObject=ui->ImageList;
                    @

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

                      This is not a clean solution.
                      Remove listWidget from your code and only call ui->ImageList. You are starting evil things there (have a look about at the QObject documentation to know why copying QObject/QObject derived class is not allowed)

                      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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