qtableview with checkbox in first row in all row

[elidrissizak]

hello all , i want to creat a tableview with 2 columns checkbox and email, to checked some email and send him a mail, its more than 2 week i search on google but nothing , i have found some code to i can add checkbox in first column of all rows but i can't checkstat which checkbox is checked , sorry for my language if anyone can help me please

this is my code :

model = new QTableView;
querymodel = new QSqlQueryModel();
querymodel->setQuery("SELECT email FROM fiche_clt ");
querymodel->insertColumn(0);
querymodel->setHeaderData(0,Qt::Horizontal,tr(" "));
querymodel->setHeaderData(1,Qt::Horizontal,tr("Email"));

for(int p=0; p<querymodel->rowCount(); p++)
    {
        model->setIndexWidget(querymodel->index(p,0),new QCheckBox());
       querymodel->setData(querymodel->index(p,0),Qt::Unchecked,Qt::CheckStateRole);
    }

[JonB]

@elidrissizak
You are mixing two different things: setData(querymodel->index(p,0), Qt::Unchecked, Qt::CheckStateRole) has nothing to do with model->setIndexWidget(querymodel->index(p,0),new QCheckBox());. You should avoid setIndexWidget(), and subclass the model to have flags() include Qt::ItemIsUserCheckable, or use a QStyledItemDelegate. You might look at, say, https://stackoverflow.com/questions/52324633/adding-checkbox-with-qsqlquerymodel-shown-in-qtableview-and-other-columns-are-em or https://stackoverflow.com/questions/14912192/add-widget-to-qsqlquerymodel

If for whatever reason you do wish to stay with your setIndexWidget()

but i can't checkstat which checkbox is checked

for(int p=0; p<querymodel->rowCount(); p++)
{
    QCheckBox *cb = qobject_cast<QCheckBox *>(model->indexWidget(querymodel->index(p,0)));
    if (cb != nullptr)
        qDebug() << cb->isChecked();
}     

[elidrissizak]

@JonB thanks you so much for your help ! now it work, last question please, you know how i can add a checkbox in header to check/uncheck all checkboxs in qtableview ?

this is my code if someone elyse search it

[JonB]

@elidrissizak said in qtableview with checkbox in first row in all row:

how i can add a checkbox in header to check/uncheck all checkboxs in qtableview

This is not easy, as Qt does not have support for it. See this link https://wiki.qt.io/Technical_FAQ#How_can_I_insert_a_checkbox_into_the_header_of_my_view.3F A different approach is shown in http://codingexodus.blogspot.com/2018/05/add-checkbox-in-qtableview-header-using.html.

[elidrissizak]

@JonB not problem if i can't add it in header i can just use qpushbutton if its possible ? , i have try this code but nothing

    foreach(QCheckBox* le, findChildren<QCheckBox*>()) {
        le->clear();
    }

[JonB]

@elidrissizak
You can use an external pushbutton to check/uncheck all if you wish (much simpler).

If you're saying the code you show does nothing, check what your are findChildren()ing on. If for whatever reason findChildren() does not find the checkboxes (you did put a qDebug() in to see what it visits, didn't you?), you can use the code earlier going through the indexWidget()s in the table if that is necessary. Onw way or another you can visit all chexckboxes.

[elidrissizak]

@JonB
i have nothing :/ can you give me example to i can setchecked qcheckbox ? thanks you

i have try this to but nothing

    QModelIndex index;
    index= model->model()->index(0,0, QModelIndex());
    modell->setData( index, Qt::Unchecked, Qt::CheckStateRole );

this is my code

    checkall= new QPushButton;
    checkall->setFixedSize(65,65);
    checkall->setToolTip("Annuler");
    checkall->setFocusPolicy(Qt::NoFocus);
   connect(checkall, SIGNAL(clicked(bool)), this, SLOT(Raz()));
.

void SendMail::Raz()
{
    foreach(QCheckBox* le, findChildren<QCheckBox*>()) {
        le->setChecked(false);
        qWarning() << le ;
    }
}

[elidrissizak]

@JonB its work with this code , thanks you so much for your help !

    for(int i = 0 ; i < modell->rowCount() ; i++)
    {
        QModelIndex index;
        index= model->model()->index(i,0, QModelIndex());
        modell->setData( index, Qt::Checked, Qt::CheckStateRole );
        model->update(index);
    }