QTreeWidget and QStackedWidget

[Kill3rReaper]

Hello Everyone!
I have a QTreeWidget with several TopLevelItems and Childs of it. I'm trying to connect one item from QTreeWidget with a one page of QStackedWidget. I was searching it everywhere, but I didn't found this what I mean.
Please help me...
Greetings!

[totem]

You could associate a unique ID to every QTreeWidgetItem, and when the current item changes in the tree you signal anyone interested that the corresponding ID has been activated.
Then, your QStackedWidget shows the correct widget accordingly.

[Kill3rReaper]

But how can I do this quickly? I have to manually create new elements to QTreeWidget, then insert the ID number to it? There is no other way out?

[totem]

this is done in like 3 mins...

MyTreeWidget::MyTreeWidget(...)
{
    // ...
    connect(this, SIGNAL(currentItemChanged(QTreeWidgetItem*,QTreeWidgetItem*)), SLOT(currentItemChanged(QTreeWidgetItem*)))
    // ...
}
void MyTreeWidget::populate(...)
{
    // ...
    QTreeWidgetItem *item = new QTreeWidgetItem("tree_item") ;
    item->setUserData(0,Qt::UserRole, PAGE_ID) ;        // unique ID HERE
    addTopLevelItem(item) ;
    // ...
}
void MyTreeWidget::currentItemChanged(QTreeWidgetItem * current)
{
    int id = item->data(0,Qt::UserRole).toInt() ;
    emit currentIDChanged(id) ;
}

MyTreeWidget::MyTreeWidget(...)
{
    // ...
    connect(this, SIGNAL(currentItemChanged(QTreeWidgetItem*,QTreeWidgetItem*)), SLOT(currentItemChanged(QTreeWidgetItem*)))
    // ...
}
void MyTreeWidget::populate(...)
{
    // ...
    QTreeWidgetItem *item = new QTreeWidgetItem("tree_item") ;
    item->setUserData(0,Qt::UserRole, PAGE_ID) ;        // unique ID HERE
    addTopLevelItem(item) ;
    // ...
}
void MyTreeWidget::currentItemChanged(QTreeWidgetItem * current)
{
    int id = item->data(0,Qt::UserRole).toInt() ;
    emit currentIDChanged(id) ;
}

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MyWindow::MyWindow(...)
{
    // MyTreeWidget *p_treeWidget
    // QStackedWidget *p_stackedWidget
 
    // ...
 
    connect(p_treeWidget, SIGNAL(currentIDChanged(int)), p_stackedWidget, SLOT(setCurrentIndex(int))) ;
 
    // ...
}

MyWindow::MyWindow(...)
{
    // MyTreeWidget *p_treeWidget
    // QStackedWidget *p_stackedWidget
    
    // ...
    
    connect(p_treeWidget, SIGNAL(currentIDChanged(int)), p_stackedWidget, SLOT(setCurrentIndex(int))) ;
    
    // ...
}

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[arturo182]

It's not the best solution, but I think it's the fastest: create a hidden column in which you store index of QStackedWiget's page that is associated with the item. This way you can do this in 1 line (in tree's currentItemChanged slot):

ui->stackedWidget->setCurrentIndex(current->text(1).toInt());

ui->stackedWidget->setCurrentIndex(current->text(1).toInt());

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[Kill3rReaper]

IMHO it's the fastest and easiest way to do this - thank you!