TreeView problem

2399487337 · 16 Mar 2023, 13:34

Can you provide examples of treeview use in UE4.27? The treeview cannot be folded or expanded in UE4.27 with NoesisGUI v3.1.7.

<UserControl.Resources>
        <HierarchicalDataTemplate x:Key="MyTreeItemTemplate"
                                  ItemsSource="{Binding Path=Children}">
            <StackPanel   Orientation="Horizontal" >
                <CheckBox  IsChecked="{Binding Path=IsChecked}" >
                </CheckBox>
                <ContentPresenter  Content="{Binding Path=NodeName}" Margin="2,0"/>
            </StackPanel>
        </HierarchicalDataTemplate>
    </UserControl.Resources>
    <Grid>
        <TreeView   ItemsSource="{Binding CommonTreeViews}"  
                  ItemTemplate="{StaticResource MyTreeItemTemplate}"
        >
        </TreeView>
    </Grid>

27 Mar 2023, 16:32

Hi, I have created an example in Unreal 4.27 with the same xaml you posted, then created a Blueprint class to represent the node items with the following properties:
- NodeName (string)
- IsChecked (boolean)
- Children (NodeItem array)
And finally added to the View asset a property CommonTreeViews (NodeItem array) and filled it with some node items data.

When playing the TreeView shows the expected items and I can properly expand the parent items by clicking in the item arrow.

Please find attached the assets I used and let me know if you find any problem with those.

TreeView problem

TreeView problem

Re: TreeView problem

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