Mouse Wheel on InRibbonGallery

[APerricone]

Hello,
sorry for the issue about my poor coding skill, but I am trying to put a tree view inside a InRibbonGallery with this xaml:

<Fluent:InRibbonGallery>
    <Fluent:GalleryItem>
        <TreeView x:Name="modules" HorizontalContentAlignment="Stretch" VerticalAlignment="Stretch">
            <TreeView.Resources>
                <Style TargetType="{x:Type TreeViewItem}">
                    <Setter Property="IsExpanded" Value="True" />
                </Style>
                <HierarchicalDataTemplate DataType="{x:Type local:Module}" ItemsSource="{Binding events}" >
                    <StackPanel Orientation="Horizontal">
                        <CheckBox IsThreeState="True" IsChecked="{Binding visible}" Content="{Binding name}" Click="ModuleList_Click" Margin="10,1"/>
                        <Image Source="images/right-arrow.png" MouseLeftButtonUp="Image_MouseLeftButtonUp" Height="16"/>
                    </StackPanel>
                </HierarchicalDataTemplate>
                <DataTemplate DataType="{x:Type local:Event}">
                    <StackPanel Orientation="Horizontal">
                        <CheckBox IsChecked="{Binding visible}" Content="{Binding name}" Click="ModuleList_Click" Margin="10,1" />
                        <Image Source="images/right-arrow.png" MouseLeftButtonUp="Image_MouseLeftButtonUp" Height="16"/>
                    </StackPanel>
                </DataTemplate>
            </TreeView.Resources>
        </TreeView>
    </Fluent:GalleryItem>
</Fluent:InRibbonGallery>

It is showed very well, and I am able to expand it, that was my goal.
My issue is that I try to rotate the mouse wheel with the mouse inside it doesn't scroll, with a lack on user experience.

Maybe I must do it in another way?
Any suggest is welcome.

---

Environment

• Fluent.Ribbon 10.1.0
• Windows 10 Pro 2H2
• .NET Framework 4.8

[batzen]

Will have a look on Monday.
But using a scrollviewer (from the treeview) inside a scrollviewer (from the gallery) is always problematic.

[APerricone]

Thank you very much, the interface looks like this now:

But it is not mandatory to be this way, maybe I can rearrange it using GalleryItems, but I am not sure how to do it.

[batzen]

Are you using multiple of those treeviews/galleryitems? Do you need to have the tree visible when the dropdown is not open?

[APerricone]

Are you using multiple of those treeviews/galleryitems?

no, only one.

Do you need to have the tree visible when the dropdown is not open?

Yes, We prefer that is visible when closed, and scrollable

I tried to do it using Fluent:InRibbonGallery.ItemTemplate but it become very large and I was not able to grouping.

[APerricone]

Hello, some news about it? I did some test, if I add Max Height on Gallery Item we can see 2 scroll bar, one for the Gallery Item and one for tree view:

and here the wheel scrolling is working.
I see that the gallery does not respond to item resize (if I open a branch of the tree it does not resize).

Many thanks for your efforts