CODEWITHSUNDEEP
c++qtqtreeviewqabstractitemmodel
Aleph0
Aleph0

Reputation: 6074

QTreeView disable showing of root node

In my project I'm using a QTreeView in order to display a plot configuration. On top I have a root node called PlotConfig containing several plot windows. Each plot window contains several simple xy plots.

So basically, I have something like this:

My Plot Configuration

I'm using my own QAbstractItemModel in order to display this plot configuration. It all works fine, but the root node PlotConfig is really distracting the user.

So I want something like this:

My desired Plot Configuration

Is there a way to disable the showing of the root node? Either directly in QTreeView or in the QAbstractItemModel. What I basically want is a QList but with each entry behaving like a tree.

Upvotes: 5

Views: 4398

Answers (2)

hanlonj
hanlonj

Reputation: 319

I needed the same appearance, eventually realized the tree can have multiple 'root' nodes (beneath the implicit invisible root node) i.e. can call addTopLevelItem for Window1, Window2, Window3 etc.

QTreeWidgetItem* rootItem;
rootItem = new QTreeWidgetItem (ui->tree->invisibleRootItem());
rootItem->setText(0, "Window1");
ui->tree->addTopLevelItem(rootItem);

rootItem = new QTreeWidgetItem (ui->tree->invisibleRootItem());
rootItem->setText(0, "Window2");
ui->tree->addTopLevelItem(rootItem);

Upvotes: 1

maxa
maxa

Reputation: 301

setRowHidden also hides the child nodes which (I guess) is not intended. In your example you have got a root node called PlotConfig. I assume it is a child node of the invisibleRootItem. In such a case you need to use setRootIndex:

setRootIndex(model.invisibleRootItem()->child(0, 0)->index());

This should give you the desired result.

Upvotes: 4

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