Exception on drop window into a docking region...

[Tomas]

Hallo,
we have a serious problem with RadDocking in Telerik WPF Q2 2011.
We're using Prism (v. 4) as a composite framework. When I try dock an document window inside the Prism's module and I drag it from the original position & drop it e.g. into left dock panel, the exception is raised (see the call stack). Please help...
Thank you.
 Tomas.

-- Call stack  --
   MS.Internal.Controls.InnerItemCollectionView.AssertPristineModelChild(Object item)
       PFCP.Infrastructure.Client.Shell.EXE: N 15946004
   MS.Internal.Controls.InnerItemCollectionView.Insert(Int32 index, Object item)
       PFCP.Infrastructure.Client.Shell.EXE: N 00040
   System.Windows.Controls.ItemCollection.Insert(Int32 insertIndex, Object insertItem)
       PFCP.Infrastructure.Client.Shell.EXE: N 00150
   Telerik.Windows.Controls.RadDocking.OnDropContainer(RadSplitContainer container, Point globalMousePosition)
       RadDocking.cs: line 0347, column 06, IL 0175
   Telerik.Windows.Controls.RadDocking.DropWindow(ToolWindow toolWindow, Point globalMousePosition)
       RadDocking.cs: line 0269, column 04, IL 0007
   Telerik.Windows.Controls.Docking.ToolWindow.OnDragEnd(Point globalMousePosition, Boolean isCancel, Boolean isResize)
       ToolWindow.cs: line 0420, column 03, IL 0042
   Telerik.Windows.Controls.WindowBase.Telerik.Windows.Controls.InternalWindow.IDragAware.OnDragEnd(Point globalMousePosition, Boolean isCancel, Boolean isResize)
       WindowBase.cs: line 0998, column 03, IL 0009
   Telerik.Windows.Controls.InternalWindow.WindowHostBase.OnDragEnd(Point globalMousePosition, Boolean isCancel, Boolean isResize)
       WindowHostBase.cs: line 0079, column 03, IL 0022
   Telerik.Windows.Controls.InternalWindow.ChromelessWindowHelper.OnWindowPositionUpdateEnded(Point mousePosition)
       ChromelessWindowHelper.cs: line 0313, column 05, IL 0035
   Telerik.Windows.Controls.InternalWindow.ChromelessWindowHelper.HandleSizeMoveEnd(IntPtr hwnd, IntPtr wParam, IntPtr lParam, Boolean& handled)
       ChromelessWindowHelper.cs: line 0483, column 04, IL 0011
   Telerik.Windows.Controls.InternalWindow.ChromelessWindowHelper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
       ChromelessWindowHelper.cs: line 0563, column 05, IL 0026
   System.Windows.Interop.HwndSource.PublicHooksFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
       PFCP.Infrastructure.Client.Shell.EXE: N 00205
   MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
       PFCP.Infrastructure.Client.Shell.EXE: N 00352
   MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
       PFCP.Infrastructure.Client.Shell.EXE: N 00151
   System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
       PFCP.Infrastructure.Client.Shell.EXE: N 00090
   MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
       PFCP.Infrastructure.Client.Shell.EXE: N 00071
----------------------------------------------------------------------------------------------------

 

End log, timestamp: 2011-07-18T10:03:26.8990299+02:00
===========================================================

[Ivo]

Hi Tomas,

RadDocking control and RadPaneGroup do not support ItemsSource property. I would suggest you to use their Items property instead. You can also check this blog post to see an example of using RadDocking control toghether with Prism. I have attached an upgraded version for Prism (v. 4) of the example.

Hope this helps.

Kind regards,
Ivo
the Telerik team

[Tomas]

Hi Ivo,
I'm not sure, that this is our problem - we have on the shell level one "ContentControl" and each module has it's own master view, where is somewhere inside visual tree used RadDocking...

However - finally we found the problem - the problem is in the used themes - if we use for example theme "Windows7" or "Summer", the application is crashed. With other themes it's everything working fine..

BTW: if you try docking functionality in the Q2.712 demo application with the specified themes, the problem is occured too - Try Docking/Theming section & theme Windows 7. - You have got the same problem there.. Thanks.
 David.

[Ivo]

Hello Tomas,

The issue with "Window7" and "Summer" themes is known and it is fixed. The fix will be released with the next internal build - at the beginning of the next week.

Hope this helps.

Best wishes,
Ivo
the Telerik team