[SOLVED] QListWidget InternalMove adds children

david.luggen

Hey there,

I experienced a strange behavior of my QListWidget. Therefore I prepared this example.

listwidget.h:
@
#ifndef LISTWIDGET_H
#define LISTWIDGET_H

#include <QListWidget>
#include <QDebug>

class ListWidget : public QListWidget
{
Q_OBJECT

public:
ListWidget(QWidget *parent = 0);

public slots:
void rowsMoved(QModelIndex,int,int,QModelIndex,int);
};

#endif // LISTWIDGET_H
@

listwidget.cpp:

@
#include "listwidget.h"

ListWidget::ListWidget(QWidget *parent)
: QListWidget(parent)
{
this->addItem("Item 1");
this->addItem("Item 2");

this->setDragDropMode( QAbstractItemView::InternalMove );

connect( this->model(),
         SIGNAL(rowsMoved(QModelIndex,int,int,QModelIndex,int)),
         this,
         SLOT(rowsMoved(QModelIndex,int,int,QModelIndex,int)));

}

void ListWidget::rowsMoved(QModelIndex,int,int,QModelIndex,int)
{
qDebug() << this->children().count();
}
@

If I start this and move the two items around, every time the children count raises by one. Is this expected behaviour? If yes, could someone explain me why?

SGaist

Hi,

It doesn't look like an expected behavior. What version of Qt are you using ?

david.luggen

Hey, I'm using Qt 5.2.1.

SGaist

Sorry for the late reply

Can you try again with 5.3 ?

If this still happens, then have a look at the "bug report system":http://bureports.qt-project.org to see if it's something known. If not please open a new report providing a minimal compilable example that shows the behavior

david.luggen

Tried it with 5.3, still the same. Search for a while at the "bug report system":bugreports.qt-project.org but didn't find anything related to this. Therefore I openend a new "report":https://bugreports.qt-project.org/browse/QTBUG-39651.

I hope I did this the right way, as it is the first time I reported something.

SGaist

It's missing the pro file and it'll be nicer in a compressed archive (e.g. zip), otherwise, looks good :)