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Editorial Team
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Asked: 2026-05-20T23:04:04+00:00

I’m learning Qt independently, and this may seem like an easy question (because it

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I’m learning Qt independently, and this may seem like an easy question (because it is). I primarily come from a Swing background, so the concepts are very similar.

My question:

I am using Qt Designer to create a QTreeView item in the UI Designer. How do I do something as simple as setting the model of the TreeView?

Usually I would do something like:

QTreeView *tree = new QTreeView();
tree->setModel( &myModel);

I don’t even know how to get a reference to the QTreeView object that the UI Designer created. Any direction will be appreciated!

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1 Answer

  1. Editorial Team

    Depending on your version of Qt, your main window will either include as a member or privately inherit a class with all of your designer widgets. So, within MainWindow, e.g. either my_widget->show(); or ui->my_widget->show(); to show the widget, respectively.

    In your case, my_tree_view->setModel(my_model);

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