[vtkusers] Visual Studio .NET -- problem with vtkFormsWindowControl

[William E. Lucarell]

Now I'm getting a System.AccessViolationException meaning memory is corrupt.  If anyone has had this problem or can help me, I'd greatly appreciate it.

Thanks,

Bill

From: vtkusers-bounces at vtk.org [mailto:vtkusers-bounces at vtk.org] On Behalf Of William E. Lucarell
Sent: Wednesday, September 17, 2008 1:58 PM
To: vtkusers at vtk.org
Subject: [vtkusers] Visual Studio .NET -- problem with vtkFormsWindowControl

I have been using VTK in Java, and recently we switched to using Visual C#.NET 2005.

I successfully added a vtkFormsWindowControl to my Windows application.  I have all of the DotNet libraries and the vtkFormsWindow library.  However, when I drag a vtkFormsWindowControl onto the application, I get this error embedded on the control instead of getting the red cone that I should get:

System.NullReferenceException: Object reference not set to an instance of an object.

at vtk.vtkFormsWindowControl.OnResize(EventArgs ea) in c:\dev\out\t2\control\vtkformswindow\vtkformswindowcontrol.cpp:line 297
at System.Windows.Forms.Control.OnSizeChanged(EventArgs e)
at System.Windows.Forms.Control.UpdateBounds(Int32 x, Int32 y, Int32 width, Int32 height, Int32 clientWidth, Int32 clientHeight)
at System.Windows.Forms.Control.UpdateBounds()
at System.Windows.Forms.Control.WmWindowPosChanged(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at vtk.vtkFormsWindowControl.WndProc(Message& m) in c:\dev\out\t2\control\vtkformswindow\vtkformswindowcontrol.cpp:line 620
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Design.ControlDesigner.DesignerWindowTarget.DefWndProc(Message& m)
at System.Windows.Forms.Design.ControlDesigner.WndProc(Message& m)
at System.Windows.Forms.Design.ControlDesigner.DesignerWindowTarget.OnMessage(Message& m)

What is causing this error? I'm new to Visual C# .NET.

Bill Lucarell


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