enh: use CharEvent instead of KeyPressEvent. Only the former is handled by styles to perform functions like reset, wireframe, etc.

enh: add some basic interaction code (hook to VTK generic interactor), and basic reset/reset cam mode. Make Renderer/OverlayRenderer private to make sure Get/Set methods are used (subclass may replace those renderers with their own, but we want the code to still work)

enh: 2nd part of the change, make sure SetApplication() is not called directly to indicate that the widget has been created, but call the superclass's Create() to create the simple widget and set the proper flags in a unique place (vtkKWWidget). Also fix some UpdateEnableState().

A new CVS repository was created on 2004-03-12 to fork ParaView during
transition to a new source tree layout.  The new repository was
created using a combination of directory-level server-side symlinks
into the old repository and copies of ,v files to preserve per-file
history.  This commit was manufactured during conversion from CVS to
represent the fork as a branch.

The new source tree layout added Utilities/IceT which was not
previously distributed as part of the source.  We represent this
addition by adding the IceT submodule.

ENH: make SetPrinting save the render mode, and call ResumeScreenRendering automatically. Make SetOffScreenRendering() use SetPrinting()

- add vtkKWRenderWidgetCommand so that the whole KWRenderWidgets hierarchy can implement/override ProcessEvent()
- make sure observers are added/removed properly (since we have a hold on the window)

sorry, need to make UpdateEnableState() public, since it will reflect the state of the widget not only depending on the Enabled ivar, but any other ivar that could impact its internal state (for example, it's application Limited Edition Mode)

use gridding instead of packing inside the render widgets; for the 2D render widgets, this makes it easier to keep the slice slider from disappearing when the application is resized

updating the copyright; file-specific information has been removed, so now you don't have to rebuild again after doing a cvs commit

- GetNthRenderer() gets the Nth renderer (or NULL if it does not exist),
- GetRendererId() gets the id of a given renderer
(ultimately redefined in vtkKWLightboxWidget)

FIX: resize all those evil lines (many of them are mine) to78 chars so that they fit in everybody's favorite editor.