QTreeView not showing headers after overriding

Match0um

Hi guys, I am facing the following issue :

I wanted to disable dragging on my QTreeView. For that, I have created a custom TreeView overriding mousemoveEvent that works well :

TreeView::TreeView(QWidget *parent)
    :QTreeView(parent)
{
    
}

void TreeView::mouseMoveEvent(QMouseEvent *event){
    if(state() == DraggingState || state() == DragSelectingState || state() == ExpandingState){
        return;
    }
}

But after doing that, my TreeView is not showing the header anymore. The header was only shown using QTreeView. What did I miss ?

mrjj

Hi
Whats wrong with setAcceptDrops(false); ?
or
setDragDropMode(QAbstractItemView::NoDragDrop);
(if its to prevent internal reordering)

Well one thing that could be messing with the headers is that you
dont call QTreeView::mouseMoveEvent(event);
To let base class do what it normally does so that might break things.

void TreeView::mouseMoveEvent(QMouseEvent *event){
    if(state() == DraggingState || state() == DragSelectingState || state() == ExpandingState){
        return;
    }
QTreeView::mouseMoveEvent(event);
}

Match0um

@mrjj said in QTreeView not showing headers after overriding:

QTreeView::mouseMoveEvent(event);

Thank you, it works now 😊 !