QTreeView focus issue

c.savur

Hello,

I want to use QTreeView keyboard binding functionality. For example, hold shift and press up/down to select multiple items in the tree.

To able use this functionality. I have to press tab to set the focus for QTreeView. It is annoying. I want to press shift+up/down, after I clicked with the mouse. Each time, I don't want to press tab.

How can I do this? I tried to use setFocus() but it did not work.

Thank you.

SGaist

Hi,

Did you already setup the selection mode on your QTreeView ?

How are you setting up that QTreeView ?

c.savur

@SGaist

yes, I set the tree to

    setSelectionBehavior(QAbstractItemView::SelectRows);
    setSelectionMode(QAbstractItemView::ExtendedSelection);

I inherited QTreeView class, so do you think this could be a reason?

SGaist

Did you reimplement anything ? How do you initialize it ?

c.savur

@SGaist

Following virtual method were reimplemented.

    void keyPressEvent(QKeyEvent *event);
    void mousePressEvent(QMouseEvent *event);
    void dragMoveEvent(QDragMoveEvent *event);
    void dropEvent(QDropEvent *event);
    void contextMenuEvent(QContextMenuEvent *event);

the way, I initialize it is I added a QTreeView to UI file and promote to my new derived class.

Thank you for your help.

SGaist

mousePressEvent ? Do you call the base class implementation in your code ?

c.savur

@SGaist

Yes, I did.

QTreeView::mousePressEvent(event);

SGaist

Also in the other reimplemented functions ?

c.savur

@SGaist

Yes, except

void dropEvent(QDropEvent *event);

SGaist

Can you show your implementation of mousePressEvent ?

c.savur

@SGaist

here is the code, I deleted some part of the code.

void TreeView::mousePressEvent(QMouseEvent *event)
{
    //![1] Control
    if(event->modifiers() == Qt::ControlModifier) {
        QModelIndex index = indexAt(event->pos());
        if(index.isValid()) {
            index = model()->index(index.row(), 0, index.parent());
            QString name = index.data(Qt::UserRole).toString();

            if(name == "xxx") {
                event->ignore();
                return;
            }

            if(name == "yyy") {
                event->ignore();
                return;
            }
        }
    }
    //![1]

    QTreeView::mousePressEvent(event);
}

SGaist

And the keyPressEvent ?

c.savur

@SGaist

Sory, I was not able to access my computer. Here is the keypressevent

void TreeView::keyPressEvent(QKeyEvent *event)
{
    if(event->modifiers() == Qt::ControlModifier && event->key() == Qt::Key_C) {
        copyAction();
    } else if(event->modifiers() == Qt::ControlModifier && event->key() == Qt::Key_V) {
        pasteAction();
    }

    QTreeView::keyPressEvent(event);
}

c.savur

Hello,

I have found my mistake, during mouse pressed event I was calling some method that changes the focus some other widget. That's why It was losing focus.

Solution.

I reimplement, mouse release event and I set the focus to the QTreeView again.

Thank you for your help!