Cannot edit Tab Control styles in WPF Theme Editor

Hi,
I have replicated this behavior and forwarded the ticket to our developers for further research. We will answer you once we have any results.

Just tried the hotfix.  I still get the same exception and red X on the Theme Navigator window, however the Visual Tree Browser does show the tree now.

Hi Matt,

I have played with the latest hotfix and TabControl is shown properly in ThemeEditor. Please take a look at the attached screencast. Are there additional steps I need to perform to get the exception? Or, probably this issue is reproduced only in specific themes. Would you please clarify what theme you are trying to change?

Thanks,
Andrey

Good morning Andrey,
I just tried it again today, starting the Theme Editor as Administrator, and it worked just fine.  I don't remember if I ran as admin yesterday or not, but I couldn't even load the project today without admin, so who knows.
Thanks for the response, I'm good to go!
Matt

You are welcome. We are happy to hear that the issue is resolved. Thank you for keeping us informed.

Andrey

Hi,
I've installed the hotfix and I'm getting this error (screenshot).  (NewTheme from Office2010Blue)
after the Build command, it generates this
System.NullReferenceException: Odkaz na objekt není nastaven na instanci objektu.
  v DevExpress.Xpf.ThemeEditor.Utils.TemplateNavigationHelper.GetXamlPosition(DependencyPropHelper prop)
  v DevExpress.Xpf.ThemeEditor.Utils.TemplateNavigationHelper.UpdateCurrentTemplate(VisualTreeItem item)
  v DevExpress.Xpf.ThemeEditor.UI.TemplateAnalyzer.Reload(VisualTreeItem navItem)
  v DevExpress.Xpf.ThemeEditor.UI.VisualTreeBrowser.SelectTargetItem(TreeViewItem selItem)
  v DevExpress.Xpf.ThemeEditor.UI.VisualTreeBrowser.Reload(ReloadNavigatorEventArgs e)
  v DevExpress.Xpf.ThemeEditor.Core.Events.NavigatorEventHelper.OnReloadNavigatorEvent(Object sender, ReloadNavigatorEventArgs e)
  v DevExpress.Xpf.ThemeEditor.Core.Events.NavigatorEventHelper.OnReloadNavigatorEvent(Object sender, ReloadNavigatorEventArgs e)
  v DevExpress.Xpf.ThemeEditor.Core.Events.ProviderEventHelper.OnReloadNavigator(ReloadNavigatorEventArgs e)
  v DevExpress.Xpf.ThemeEditor.Preview.PreviewWindow.PreviewItemSelChanged(Object target)
  v DevExpress.Xpf.ThemeEditor.Preview.PreviewWindow.OnPreviewMouseLeftButtonDown(Object sender, MouseButtonEventArgs e)
  v System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
  v System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
  v System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
  v System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
  v System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
  v System.Windows.UIElement.OnPreviewMouseDownThunk(Object sender, MouseButtonEventArgs e)
  v System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
  v System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
  v System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
  v System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
  v System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
  v System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
  v System.Windows.Input.InputManager.ProcessStagingArea()
  v System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
  v System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
  v System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
  v System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
  v System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
  v MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
  v MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
  v System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
  v MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
Tomas

Hello Tomas,

I can replicate this problem on our side. It seems that the bug is not fixed completely. So, I have deleted a link to the hotfix from this ticket and re-activated it.

Thanks,
Elliot

Hello,
Any news?

Hello Tomas,

I have contacted our R&D regarding this issue. Currently, they are working on it. We will do our best to provide a solution as soon as possible. Please bear with us.

Thanks,
Michael

Hello,
Any news?
I need to edit style of DXTabControl for whole application (to change background color).