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<DIV dir=ltr align=left><FONT size=2 face=Arial><SPAN
class=123325719-22022011>Hello,</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT size=2 face=Arial><SPAN class=123325719-22022011>I
received support from Kitware (thanks David Cole) and wanted to
contribute back to the user list.</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT size=2 face=Arial><SPAN
class=123325719-22022011></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT size=2 face=Arial><SPAN
class=123325719-22022011>When using ActiViz, it is important to hold .NET
managed references to vtk objects or objects used by vtk objects. Skipping
this step often will result in AccessViolationExceptions where .NET performs
garbage collection on memory that is still being used by VTK. This is
especially necessary for .NET event handlers.</SPAN></FONT></DIV>
<DIV><FONT size=2 face=Arial><SPAN
class=123325719-22022011></SPAN></FONT> </DIV>
<DIV><FONT size=2 face=Arial><SPAN
class=123325719-22022011>Cheers,</SPAN></FONT></DIV>
<DIV><FONT size=2 face=Arial><SPAN
class=123325719-22022011>Bjorn</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT size=2 face=Arial></FONT><FONT size=2
face=Arial></FONT><BR></DIV>
<DIV dir=ltr lang=en-us class=OutlookMessageHeader align=left>
<HR tabIndex=-1>
<FONT size=2 face=Tahoma><B>From:</B> vtkusers-bounces@vtk.org
[mailto:vtkusers-bounces@vtk.org] <B>On Behalf Of </B>Oksnevad,
Bjorn<BR><B>Sent:</B> Monday, February 21, 2011 4:06 PM<BR><B>To:</B>
vtkusers@vtk.org<BR><B>Subject:</B> [vtkusers] ActiViz
vtkImagePlaneWidget<BR></FONT><BR></DIV>
<DIV></DIV><FONT size=2 face="Arial, sans-serif">
<DIV>Hello,</DIV>
<DIV>I am new to ActiViz as well as new to the user group.</DIV>
<DIV>I am trying to use the vtkImagePlaneWidget to view a custom format MRI data
source. The plane is rendered for the first view successfully. When
I start to interact with the plane, I get the following exception:</DIV>
<DIV> </DIV>
<DIV>System.AccessViolationException was unhandled</DIV>
<DIV> Message="Attempted to read or write protected memory. This is often
an indication that other memory is corrupt."</DIV>
<DIV> </DIV>
<DIV>Does anyone have tips on how to read image data from file using C# and then
transferring the data to a vtkImageData object and setting up the
vtkImagePlaneWidget?</DIV>
<DIV> </DIV>
<DIV>Thanks!</DIV>
<DIV>Bjorn</DIV>
<DIV> </DIV>
<DIV> </DIV></FONT>
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