The order of items in QTreeWidget

[aamer4yu]

Use QTreeWidget::insertTopLevelItem(0,pTreeWidgetItem);
It will add ur items on top, and the top will move below

Edit : Sorry, didnt pay attention that you tried it already. Can u show us the code that you have tried ? It should work I geuss.

[KK]

aamer4yu, Thank you for your reply.

My app is a little bit complex.
So I created a simple code.
Here is the code.

void TreeWidgetTest::addItem(){
	QTreeWidgetItem *item = new QTreeWidgetItem(ui.treeWidget);
	item->setText(0,ui.lineEdit->text());
	ui.treeWidget->insertTopLevelItem(0,item);
	ui.lineEdit->setText("");
}

void TreeWidgetTest::addItem(){
	QTreeWidgetItem *item = new QTreeWidgetItem(ui.treeWidget);
	item->setText(0,ui.lineEdit->text());
	ui.treeWidget->insertTopLevelItem(0,item);
	ui.lineEdit->setText("");
}

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addItem() function is called when a pushButton is pressed.
This function adds the text is filled in lineEdit into treeWidget.
As you can see, "QTreeWidget::insertTopLevelItem" is used.
But text is inserted below the text which was already added.

samething is wrong?

[aamer4yu]

samething is wrong?

Yesss... something is wrong...
even I tried your code and got the same behaviour... then traced the program and finally found the culprit...

QTreeWidgetItem *item = new QTreeWidgetItem(ui.treeWidget);
You are passing tree widget as parent... and according to the docs...

void QTreeWidget::insertTopLevelItem ( int index, QTreeWidgetItem * item )
Inserts the item at index in the top level in the view.
If the item has already been inserted somewhere else it wont be inserted.

So when u try ui.treeWidget->insertTopLevelItem(0,item);, it sees that it has already been added to the treewidget, see ctor of tree widget item...
Just replace that line with this -

QTreeWidgetItem *item = new QTreeWidgetItem;

and u get ur desired flow

[KK]

Thanks for your quick reply!

QTreeWidgetItem *item = new QTreeWidgetItem(ui.treeWidget);
You are passing tree widget as parent... and according to the docs...

I see!
Oh! It was very easy stuff...
I could't notice that.

Thank you so much!