Right to Left support in DragAndDrop

[MN Zandi]

Hi,
I'm new with Telerik controls and am testing the demo Telerik WPF controls.
I have a problem with Right To Left support:

I create a new "Rad Control Browser Application" project. Then in "Page1" page, set it's FlowDirection property to "RightToLeft", then I place a button in this page, and in it's click event instantiate a RadWindow inherited control.
In this window I try to place some drag and drop samples. For example I place two tree with IsDragDropEnabled sets to true (It's not matter, I also test samples provided with WPF controls).
The problem is here:
When the FlowDirection property of the page is "LeftToRight" all things works well, but when this property is set to "RightToLeft", If I drag somthing for example from right to left it will move in opposite direction from left to right.

Note that I change the page's FlowDirection property, not the window. when I just change the window FlowDirection property all things are well. The problem is from page's FlowDirection property.

Sorry for my bad English. :)

Here is my source codes, please see these if my explanation is confusing.
I will attach an image of the result.

Page1.xaml:

<Page x:Class="RadControlsWpfBrowserApp1.Page1"
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
      xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:Controls="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls" mc:Ignorable="d"
      d:DesignHeight="300" d:DesignWidth="300"
      Title="Page1" FlowDirection="RightToLeft">
    <Grid>
        <Controls:RadButton Content="Open the window" Width="100" Height="40" Click="RadButton_Click" />
    </Grid>
</Page>

Page1.cs:

using System.Windows;
using System.Windows.Controls;

namespace RadControlsWpfBrowserApp1
{
    /// <summary>
    /// Interaction logic for Page1.xaml
    /// </summary>
    public partial class Page1 : Page
    {
        public Page1()
        {
            InitializeComponent();
        }

        private void RadButton_Click(object sender, RoutedEventArgs e)
        {
            var page = new RadWindow1();
            page.ShowDialog();
        }
    }
}

RadWindow1.xaml:

<telerik:RadWindow x:Class="RadControlsWpfBrowserApp1.RadWindow1"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
        Header="RadControlsScenario1" Height="300" Width="300" WindowStartupLocation="CenterOwner">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition/>
            <ColumnDefinition/>
        </Grid.ColumnDefinitions>
        <telerik:RadTreeView Name="LeftRadTreeView" Margin="10" IsDragDropEnabled="True" BorderBrush="Black" BorderThickness="1"/>
        <telerik:RadTreeView Name="RightRadTreeView" Margin="10" IsDragDropEnabled="True" BorderBrush="Black" BorderThickness="1" Grid.Column="1"/>
    </Grid>
</telerik:RadWindow>

RadWindow1.cs

using System.Collections.Generic;

namespace RadControlsWpfBrowserApp1
{
    /// <summary>
    /// Interaction logic for RadWindow1.xaml
    /// </summary>
    public partial class RadWindow1
    {
        public RadWindow1()
        {
            InitializeComponent();

            var items = new List<string>()
                            {
                                "Item1",
                                "Item2",
                                "Item3"
                            };
            RightRadTreeView.ItemsSource = items;
        }
    }
}

So, Any Ideas?

Thanks.

[Tsvyatko]

Hello MN Zandi,

Since our Q3 release we have introduced Native drag mode (by EnableNativeDrag property to RadDragAndDropManager)  which supports right to left support.

Please, have a look and let me know if this works for you.

All the best,
Tsvyatko
the Telerik team