[vtkusers] BvtkRenderWindowPackage with vtk4.0

[Dean Inglis]

forzakim,

>When BvtkRenderWindowPackage is used with Borland C++Builder in VTK 4.0, >
>an access violation occurs.

I have been using a slightly modified version of John's Bvtk component that
still works fine.  I recently found a similar error though.  In the main
form's destructor of your app you may have to add something of the following
sort:

void __fastcall TMain::FormDestroy(TObject *Sender)
{
 vtkWin32OpenGLRenderWindow* renwin = RenderWindow->GetRenderWindow();
 vtkRenderer* ren = RenderWindow->GetRenderer();

 outlineactor->ReleaseGraphicsResources(renwin);

 ren->GetProps()->RemoveAllItems();

 outlineactor->Delete();
 outlinemapper->Delete();
 outline->Delete();
 LookupTable->Delete();
 reader->Delete();
}

where RenderWindow is the name of the BvtkRenderWindow component.

regards,
Dean