Drag-drop with internalmove makes items disappear

kalas

Hi,

I'm trying to make drag and drop inside a treewidget work to be able to move items around. I've managed to make items draggable but when I release the mouse button the item disappears. I've tried the following example from stackoverflow and this has the same issues as my tree widget in Qt 5.4 on Windows 7.

#include <QListWidget>

int main(int argc, char **argv)
{
    QApplication a(argc, argv);

    QListWidget lw;

    for(int i = 1; i < 10; ++i)
        lw.addItem(new QListWidgetItem(QString("Item %1").arg(i)));
    lw.setDragEnabled(true); // ***
    lw.viewport()->setAcceptDrops(true); // ***
    lw.setDefaultDropAction(Qt::MoveAction); // ***
    lw.setDropIndicatorShown(true); // ***

    lw.setDragDropMode(QAbstractItemView::InternalMove);

    lw.show();

    a.connect(&a, SIGNAL(lastWindowClosed()), &a, SLOT(quit()));
    a.exec();
}

Here's how this looks for me:
Imgur

Any ideas?

SGaist

Hi and welcome to devnet,

Can you try again with Qt 5.5 ?

mrjj

tried the code with 5.5 and it does work there.