Unsolved How to display QTableWidget selected row in a qLineEdit of the same class?

[CEO.]

Please I will need your help. I am not that proficient with QTableWidget and honestly need your help with proper guidance.
Before I came here, I have made several research but to no avail. I have also studied the Qt documentation but don't understand it.

I have basic knowledge of Python and pyqt5 and have written some projects anyway, my problem is with QTableWidget.

I am writing a program and in one of the windows, a click of a button loads a window with a qtablewidget in it. This qtablewidget displays retrieved records from the database.
Please I need a line of code that can make any selected row of the qTablewidget to be displayed in a particular lineEdit in the same class with the qTableWidget.
I would prefer a code example as an illustration. Please. In the attached photo, you can see the selectedRow label and its QLineEdit which is readOnly, please I want the content of the selectedRow in the qtablewidget to display in that QLineEdit.

Kindly help me with code based on my code[ATTACH=CONFIG]13697[/ATTACH]

The below is an extract from my program:

    [CODE]

   displaylb = QLabel("Selected row")
    self.displaytx = QLineEdit()
    self.displaytx.setReadOnly(True)
    self.tab = QtWidgets.QTableWidget(self)
    Headerlist = [this contains the columns title in the qTablewidget]
    self.tab.setRowCount(100000)
    self.tab.setColumnCount(15)
    self.tab.setHorizontalHeaderLabels(Headerlist)
    self.tab.horizontalHeader().setStyleSheet("::section{background-color: blue}")
    self.tab.setGeometry(150, 200, 1700, 1700)
    self.tab.setSizeAdjustPolicy(QAbstractScrollArea.AdjustToContents)
    self.tab.resizeColumnsToContents()
    #self.tab.setColumnWidth(0,150)
    self.tab.setSelectionBehavior(QAbstractItemView.SelectRows)
    self.tab.horizontalHeader().setSectionResizeMode(
    QHeaderView.Stretch)  # this makes the columns fit in the widget
    self.tab.setEditTriggers(QtWidgets.QTableWidget.NoEditTriggers)
    self.tab.cellDoubleClicked.connect(self.tabClick)

[/CODE]

[SGaist]

Hi,

Do you mean you want to build a string of the row and then put that in your QLineEdit ?

For example in a slot connected to the currentCellChanged signal ?

[CEO.]

yes., I want the contents of the selected row displayed in the qLineEdit there

[CEO.]

@SGaist thanks for your concern. I have fixed it. Now I wanna try to create different QLineEdits for each column and make the selected row display their corresponding values instead of in a single line edit.

Have you tried such before please?

[JonB]

@CEO
You can do all this work yourself with your own line edits, but this is not the best/easiest/most efficient way to go. Instead Qt offers you two ways which (I think) are better:

• You can make it so the QTableWidget is editable: the user clicks into a cell and edits it there. No separate line edits. If you like it that way.

• You can use QDataWidgetMapper to "map" a whole series of separate, individual appropriate edit widgets to the columns in the selected row of a model. If you like it that way.

[CEO.]

@JonB thanks. I want the displayed values in their corresponding and different line edits. Can you write a code for that plz?
Just the function

[JonB]

@CEO said in How to display QTableWidget selected row in a qLineEdit of the same class?:

Can you write a code for that plz?

Are you serious?

I want the displayed values in their corresponding and different line edits.

Then I would suggest you use the QDataWidgetMapper.

[CEO.]

@JonB this doesn't answer my request plz

[JonB]

@CEO
What doesn't answer your request? That I write your code for you to save you learning how to do it?

[CEO.]

is there anything wrong in writing a line of code to give someone a clue? I assist different people when lines of codes if I really know it and have done some works with it to guide them whenever I am suggesting an answer. It saves them from restlessness.

[CEO.]

@JonB now I discovered you are either hoarding knowledge or might not have done any work on the question. I checked different contributions in some thread now and saw some members explicitly writing out lines of codes. One of them even helped me greatly and I just have to call him a pro. If you know, there's no need hoarding it.

Anyway, thanks for the time.

[JonB]

@CEO said in How to display QTableWidget selected row in a qLineEdit of the same class?:

@JonB now I discovered you are either hoarding knowledge or might not have done any work on the question.

Yes, you're right. I have nothing better to do than lie to questioners about what I know and they should do, and I don't spend enough of my time writing the code demanded to save them time.

Here is an extract from my usage of the QDataWidgetMapper which I know nothing about from a sample project of mine. I'm sorry if my variables/widgets/model are not the same as yours. Also here I happen to be binding to QSpinBoxes, let me know if I need to change it to QLineEdits for you.

void SectorRegisters::initDataWidgetMapper()
{
    // set up the `QDataWidgetMapper`
    this->dwm = new QDataWidgetMapper(this);
    // set model (this->sectorsModel is the model being used, in my case it's a `QStandardItemModel`)
    SectorsModel *sectorsModel = this->sectorsModel;
    dwm->setModel(sectorsModel);
    // Vertical => widget mapped to row
    dwm->setOrientation(Qt::Vertical);
    // current index is always column #0
    dwm->setCurrentIndex(0);

    // Region mappings
    dwm->addMapping(ui->spinRegionSocialState, SectorsModel::RegionSocialState);
    dwm->addMapping(ui->spinRegionGoodAreas, SectorsModel::RegionGoodAreas);
    dwm->addMapping(ui->spinRegionPoorAreas, SectorsModel::RegionPoorAreas);
    dwm->addMapping(ui->spinRegionCash, SectorsModel::RegionCash);

    // Here there are many further widget<->model-column mappings
    // ...
}

You're welcome.