Qtableview with Standard model focus problem

[A Former User]

I have created Qtableview and setted a model
expiry date has a dateEdit delegate

i want to disable selection for some columns such as name , price ,cost , t. price and t. cost
so when the user press tab it will not be selected or focused
how can i do that?
please answer,I really need this .

[VRonin]

You can reimplement flags() of your model and decide what can be selected and what can't by setting/unsetting the Qt::ItemIsSelectable flag

[A Former User]

@VRonin said in Qtableview with Standard model focus problem:

Qt::ItemIsSelectable

it worked but the item looks disabled

[VRonin]

can you show the code you used?

[A Former User]

@VRonin

        QString qname = qry.value(0).toString();
        QString qprice = qry.value(1).toString();
        QString qtax = qry.value(2).toString();
        //int qmin = qry.value(3).toInt();
        QString qsale = qry.value(4).toString();

        //-->creating the items
        QStandardItem *iname = new QStandardItem(qname);
        iname->setFlags(Qt::ItemIsSelectable);
        iname->setEditable(false);

        QStandardItem *iPB = new QStandardItem();
        iPB->setCheckable(true);
        iPB->setEditable(false);

        QStandardItem *iquantity = new QStandardItem("1");

        QStandardItem *iexpiry = new QStandardItem("01/18");

        QStandardItem *isale = new QStandardItem(qsale);
        isale->setEditable(false);
        isale->setFlags(Qt::ItemIsSelectable);

        QStandardItem *itax = new QStandardItem(qtax);
        itax->setEditable(false);
        itax->setFlags(Qt::ItemIsSelectable);

        QStandardItem *iprice = new QStandardItem(qprice);
        iprice->setEditable(false);
        iprice->setFlags(Qt::ItemIsSelectable);

        QStandardItem *icost = new QStandardItem();
        icost->setEditable(false);
        icost->setFlags(Qt::ItemIsSelectable);

        QStandardItem *itprice = new QStandardItem(qprice);
        itprice->setEditable(false);
        itprice->setFlags(Qt::ItemIsSelectable);

        QStandardItem *itcost = new QStandardItem();
        itcost->setEditable(false);
        itcost->setFlags(Qt::ItemIsSelectable);

        //-->fell the model with this items
        model->setItem(row, 0, iname);
        model->setItem(row, 1, iPB);
        model->setItem(row, 2, iquantity);
        model->setItem(row, 3, iexpiry);
        model->setItem(row, 4, isale);
        model->setItem(row, 5, itax);
        model->setItem(row, 6, iprice);
        model->setItem(row, 7, icost);
        model->setItem(row, 8, itprice);
        model->setItem(row, 9, itcost);

        //-->end
        ui->itemsTV->setModel(model);

[VRonin]

Yep, you are overriding the existing flags.
For an item to become not selectable you have to use itprice->setFlags(itprice->flags() & ~Qt::ItemIsSelectable); to make it selectable again use itprice->setFlags(itprice->flags() | Qt::ItemIsSelectable);

[A Former User]

@VRonin

now it's not selectable but it take focus
i mean that if where on row 1 column Qua + bo
you will press tab 10 times to go to the Qua + bo in row 2

[VRonin]

To disable it completely you need to do the same thing with the Qt::ItemIsEnabled flag. Then implement a custom delegate:

class NoGrayDelegate : public QStyledItemDelegeate{
Q_OBJECT
Q_DISABLE_COPY(NoGrayDelegate)
public:
NoGrayDelegate(QObject* parent = Q_NUULPTR) : QStyledItemDelegeate(parent){}
void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const Q_DECL_OVERRIDE
{
    Q_ASSERT(index.isValid());
    QStyleOptionViewItem opt = option;
    initStyleOption(&opt, index);
    opt->state | QStyle::State_Enabled;
    QStyle *style = option.widget ? option.widget->style() : QApplication::style();
    style->drawControl(QStyle::CE_ItemViewItem, &opt, painter, option.widget);
}
};

and call something like ui->itemsTV->setItemDelegateForColumn(1, new NoGrayDelegate(this)); for every column you want disabled but with black text

[A Former User]

@VRonin
it has some syntax error but i managed to solve them

class NoGrayDelegate : public QStyledItemDelegate{
Q_OBJECT
Q_DISABLE_COPY(NoGrayDelegate)
public:
NoGrayDelegate(QObject* parent = nullptr) : QStyledItemDelegate(parent){}
void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const Q_DECL_OVERRIDE
{
    Q_ASSERT(index.isValid());
    QStyleOptionViewItem opt = option;
    initStyleOption(&opt, index);
    opt.state | QStyle::State_Enabled;
    QStyle *style = option.widget ? option.widget->style() : QApplication::style();
    style->drawControl(QStyle::CE_ItemViewItem, &opt, painter, option.widget);
}
};

still the same
i have to press tab 10 times to go the same column but in the other row

[VRonin]

sorry, my code missed a =. opt.state | QStyle::State_Enabled; should be opt.state |= QStyle::State_Enabled;

i have to press tab 10 times to go the same column but in the other row

can you show us the code where you set the flags and set the delegate?

[A Former User]

still the same

class NoGrayDelegate : public QStyledItemDelegate{
Q_OBJECT
Q_DISABLE_COPY(NoGrayDelegate)
public:
NoGrayDelegate(QObject* parent = nullptr) : QStyledItemDelegate(parent){}
void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const Q_DECL_OVERRIDE
{
    Q_ASSERT(index.isValid());
    QStyleOptionViewItem opt = option;
    initStyleOption(&opt, index);
    opt.state |= QStyle::State_Enabled;
    QStyle *style = option.widget ? option.widget->style() : QApplication::style();
    style->drawControl(QStyle::CE_ItemViewItem, &opt, painter, option.widget);
}
};

    ui->itemsTV->setItemDelegateForColumn(0, new NoGrayDelegate(this));
    ui->itemsTV->setItemDelegateForColumn(3, new DateEditDelegate(this));
    ui->itemsTV->setItemDelegateForColumn(4, new NoGrayDelegate(this));
    ui->itemsTV->setItemDelegateForColumn(5, new NoGrayDelegate(this));
    ui->itemsTV->setItemDelegateForColumn(6, new NoGrayDelegate(this));
    ui->itemsTV->setItemDelegateForColumn(7, new NoGrayDelegate(this));
    ui->itemsTV->setItemDelegateForColumn(8, new NoGrayDelegate(this));
    ui->itemsTV->setItemDelegateForColumn(9, new NoGrayDelegate(this));

[VRonin]

Where are you setting the flags? you should have something like itprice->setFlags(itprice->flags() & ~Qt::ItemIsSelectable & ~Qt::ItemIsEnabled);

[A Former User]

@VRonin ok it worked

now i have another problem in focus

look at the image above
when the page opens it will automaticity set the focus on supplier combobox
[TAB] the user go to no. lineedit
and so on
but i want when user press enter on expirydate it set the focus on add drug line edit
and when the user press enter from add drug line edit it goes to the new line row ready to edit the qua + bo and so on

[VRonin]

create a QStyledItemDelegate set it to the expirydate column. Then connect to the signal QAbstractItemDelegate::closeEditor to know when the user finished editing and in the slot you can manage the focus however you want