[vtkusers] False DISPLAY :0.0

[Tom G. Smith (Smitty)]

Hello vtkusers,

One of my coworkers pointed out that Cone.cxx isn't
meant to be interactive, so I tried compiling Cube.cxx from
Examples/DataManipulation/Cxx/Cube.cxx, and although I can interact
with it (zoom, rotate, move, quit), I still get these errors when I
run it:

	bash-2.05a$ ./Cube
	Xlib: connection to ":0.0" refused by server
	Xlib: No protocol specified

The CMakeLists.txt for Cube.cxx is essentially identical to that
I used for Cone.cxx shown below.

>From smitty at random.kcc.com Fri Oct 25 18:12:40 2002
>Date: Fri, 25 Oct 2002 18:11:47 -0500 (CDT)
>From: "Tom G. Smith (Smitty)" <smitty at random.kcc.com>
>To: vtk mailing list <vtkusers at public.kitware.com>
>Cc: Chris Pieper <Chris.Pieper at kcc.com>
>Subject: Can't interact remotely with binary from Cone.cxx
>
>Hello vtkusers,
>
>I just installed VTK 4.0.2, and you may've seen the problem I posted
>about getting Tcl scripts to work.  I'm having a similar problem with
>C++ files.  I compile Cone.cxx with these commands:
>
>	mkdir Cone; cd Cone
>	vtkbuildmake Cone # Builds CMakeLists.txt, listed below, runs cmake.
>	make
>
>It compiles clean, but when I run it remotely I get the same error as
>with Tcl scripts (Note that my $DISPLAY is *NOT* set to :0.0):
>
>	bash-2.05a$ ./Cone
>	Xlib: connection to ":0.0" refused by server
>	Xlib: No protocol specified
>
>The graphic of the cone displays, and slowly revolves, but there's
>absolutely no interaction.  The mouse and keyboard don't do anything.
>To stop the display I must do Ctrl-C.  All other X clients work fine,
>e.g. xterm, xclock, MATLAB, Mathematica, SAS, etc.
>
>Here's my CMakeLists.txt file (BTW cmake takes some getting used to.
>Can't say I like it very much):
>.....................................................................
>PROJECT (Cone)
>
>INCLUDE (${CMAKE_ROOT}/Modules/FindVTK.cmake)
>IF (USE_VTK_FILE)
>  INCLUDE(${USE_VTK_FILE})
>ENDIF (USE_VTK_FILE)
>
>INCLUDE_DIRECTORIES(
> /opt/vtk/Imaging/Testing/Cxx /opt/vtk/Rendering /opt/vtk/Hybrid
> /opt/vtk/Patented /opt/vtk/Parallel /opt/vtk /opt/vtk/Common
> /opt/vtk/Filtering /opt/vtk/Imaging /opt/vtk/Graphics /opt/vtk/IO
> /opt/vtk/Utilities/zlib /opt/vtk/Utilities/png /opt/vtk/Utilities/jpeg
> /opt/vtk/Common/Testing/Cxx /usr/include/python1.5
>)
>
>LINK_DIRECTORIES(
> /contrib/vtk/VTK/bin /usr/X11R6/lib
>)
>
>LINK_LIBRARIES(
> vtkRendering vtkGraphics vtkImaging vtkFiltering vtkCommon
> GL Xt SM ICE X11 Xext pthread m dl
>)
>
>ADD_EXECUTABLE(Cone Cone.cxx)


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