CODEWITHSUNDEEP
c++qt
New_ToQT
New_ToQT

Reputation: 53

Accessing Checkboxes inside a Qtableview

I m new to Qt and i m trying to add a QCheckbox Column to my QTableView using SetIndexWidget() as follows: 

QSqlQueryModel * model = new QSqlQueryModel();

model->setQuery("select * from Rendezvous");
model->insertColumn(0);
model->setHeaderData(0, Qt::Horizontal, QObject::tr(""));
model->setHeaderData(1, Qt::Horizontal, QObject::tr("ID"));
model->setHeaderData(2, Qt::Horizontal, QObject::tr("Date"));
model->setHeaderData(3, Qt::Horizontal, QObject::tr("Heure"));
model->setHeaderData(4, Qt::Horizontal, QObject::tr("Type"));
model->setHeaderData(5, Qt::Horizontal, QObject::tr("Description"));
model->setHeaderData(6, Qt::Horizontal, QObject::tr("ID Client"));
ui->tableView_RDV->setModel(model);
ui->tableView_RDV->resizeColumnToContents(0);
for(int p=0;p<model->rowCount();p++)
{
    ui->tableView_RDV->setIndexWidget(model->index(p,0),new QCheckBox());
}

This adds a Checkbox to my Table and i can interact with it but i have no idea how to check Which Lines in my QTableView have Checked QCheckboxes.

I appreciate any kind of indication to how to do this.

Upvotes: 1

Views: 900

Answers (2)

cse
cse

Reputation: 4104

Following code snippet may help you:

for(int p=0;p<model->rowCount();p++)
{
    QCheckBox* tmp = qobject_cast<QCheckBox*>(ui->tableView_RDV->indexWidget(model->index(p,0)));
    if(tmp != NULL && tmp.isChecked())
    {
        //Do what you wants when it is checked
    }
}

UPDATED
For using qobject_cast instead of dynamic_cast after comment from Dmitry Sazonov and information available at Qt Forum

Upvotes: 0

Dmitry Sazonov
Dmitry Sazonov

Reputation: 9014

You should use Qt::CheckStateRole for displaying checkboxes. It is much faster, and corresponds to Qt MVC:

for(int p=0;p<model->rowCount();p++)
{
    auto checked = SomeLogic ? Qt::Checked : Qt::Unchecked;
    auto index = model->index( p, 0 );
    model->setData( index, checked, Qt::CheckStateRole );
}

Note: checkbox will be shown only if you directy specify Qt::CheckStateRole with non-empty value. If you will set it to an empty QVariant(), checkbox will not be shown.

Upvotes: 1

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