We have an MDI application that uses an UltraTree object to display hierarchical functions to user. About a month ago, we upgraded our Infragistics components to the latest release, 11.2 CLR 4.0, SR 2028.
We're now experiencing a random error, that appears during mouse operations (mouse move, mouse click) on UltraTree, and that is intercepted by OS as an Unhandled exception:
System.ObjectDisposedException: Cannot access a disposed object.Object name: 'ToolTipFormEx'. at System.Windows.Forms.Control.CreateHandle() at System.Windows.Forms.Form.CreateHandle() at Infragistics.Win.ToolTipForm.CreateHandle() at System.Windows.Forms.Control.RecreateHandleCore() at System.Windows.Forms.Form.RecreateHandleCore() at Infragistics.Win.ToolTipFormEx.set_DisplayShadow(Boolean value) at Infragistics.Win.ToolTip.set_DisplayShadow(Boolean value) at Infragistics.Win.UltraWinTree.UltraTree.get_ToolTip() at Infragistics.Win.UltraWinTree.UltraTreeNode.ShowTooltipIfNeeded() at Infragistics.Win.UltraWinTree.UltraTree.OnMouseEnterElement(UIElementEventArgs e) at Infragistics.Win.UltraControlBase.Infragistics.Win.IUltraControl.FireMouseEnterElement(UIElementEventArgs e) at Infragistics.Win.ControlUIElementBase.ElementEntered(UIElement element, Boolean triggerMouseLeavesOnly) at Infragistics.Win.ControlUIElementBase.ProcessMouseMoveHelper(Object sender, mouseEventArgs e) at Infragistics.Win.ControlUIElementBase.ProcessMouseMove(Object sender, MouseEventArgs e) at Infragistics.Win.Utilities.ProcessEvent(Control control, ProcessEvent eventToProcess, EventArgs e) at Infragistics.Win.UltraWinTree.UltraTree.OnMouseMove(MouseEventArgs e) at System.Windows.Forms.Control.WmMouseMove(Message& m) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
Could you please help us to avoid this behaviour? If you need details, please ask.Thanks!
What version did you upgrade from?
We upgraded from 10.3.20103.2015 (Framework 2.0) to 11.2.20112.2019 (Framework 3.5)
But I have also tested with SR 2034. This fails. 10.3 works.
Note that this is now open as case # CAS-85397-BG6V5W
Mike
Ok. Thanks to Mike who opened a case (I hadn't that time yet..). And thanks to Infragistics staff that worked to find a solution. We're waiting for service release, then. Bye!
Hi,
Just wanted to let you know I confirmed that this is indeed a bug. It should be fixed in the April service release.
The bug happens when you show a tooltip in one DisplayStyle (like the default style), then try to show a tooltip on the same tree using the WindowsVista DisplayStyle. So it will only happen if you switch styles at run-time after showing a tooltip in the tree at least once.
OK, I see this issue has already been submitted to development.
I uploaded it to case # CAS-85397-BG6V5W
I have attached it here also.
Mike,
I don't see the demo app that you uploaded. Could you try again?