Fw: Message vtkUser

Michel Audette m.audette at aist.go.jp
Thu Dec 9 03:31:17 CET 2004


Hello everyone,

my student had the following problem with a python program featuring
multiple vtkTkRenderWidget calls. See below...

Can anyone suggest a workaround?

Best regards,

Michel

Michel Audette, Ph.D.,
Research Fellow, Surgical Simulation,
Surgical Assist Technology Group,
AIST,
Namiki 1-2,
Tsukuba, Japan,
305-8564.
--------------------------------------------------------
"If you think you can do it, you're right.
 If you think you can't do it, you're still right."
- Henry Ford

>
> I have some problems with management of many vtkTkRenderWidget.
>
> I am developing GUI for surgical software in Python Language.
> Each window of this GUI have one vtkTkRenderWidget to show 3D Objects
> (One of them used the vtksliceWidget develop by Atamai).
> I succeed to show one objects in one of these windows.
> But if I try to open another one I get this error:
>
> File "/usr/local/lib/python2.2/lib-tk/Tkinter.py", line 1316, in __call__
>     return apply(self.func, args)
>   File "selection.py", line 64, in <lambda>
>     command = lambda:
>   File "functionclass.py", line 550, in entranceTriplan
>     self.show2(self.triplan)
>   File "functionclass.py", line 164, in show2
>     self.affichageTriplan("exemple.mnc")
>   File "functionclass.py", line 584, in affichageTriplan
>     self.viewer1 = vtkSliceWidget.vtkSliceWidget(self.triplan.frame1,
> width=256,height=256)
>   File "/home/athinnes/atamai/examples/vtkSliceWidget.py", line 108, in
> __init__
>     Tkinter.Widget.__init__(self, master, 'vtkTkRenderWidget', cnf, kw)
>   File "/usr/local/lib/python2.2/lib-tk/Tkinter.py", line 1780, in
> __init__
>     self.tk.call(
> TclError: invalid command name "vtkTkRenderWidget"
>
> This following is a simplify version of the software architecture without
> using vtkSliceWidget .
> Each module corresponding to one part of the interface:
>
> ######################################################################
> #testfunc.py
>
> from Tkinter import *
> from vtkTkRenderWidget import *
> import triplantest
> import bouton
> import render
>
> class Functions:
>
>    def __init__(self, myParent):
>       print "functions class created"
> # If you comment the self.render line. The button will open the
> triplantest window
>       self.render = render.Render(self, myParent)
>
>       self.bouton = bouton.Bouton(self)
>       self.triplan = triplantest.Triplan(self)
>
> ## Procedure:  show
> # this procedure is call to show on the screen the windows winname
>    def show(self, winname):
>       winname.deiconify()
>       self.affichageTriplan()
>
> ## Procedure:  affichageTriplan
> # This procedure setup the slice image inside triplan interface
>
>    def affichageTriplan(self):
>
>       self.renderWidget = vtkTkRenderWidget(self.triplan.frame1)
>       self.renderWidget.pack(expand='true',fill='both')
>
>
> if __name__ == '__main__':
>
>    root = Tk()
>    function = Functions(root)
>    function.triplan.withdraw()
>    root.mainloop()
>
> #######################################################################
> #render.py
>
> from vtkTkRenderWidget import *
> from vtkpython import *
> from Tkinter import *
>
> class Render:
>
>    def __init__(self, myFunctions, myParentFunction):
>
>       self.functions = myFunctions
>       myParentFunction.title("test vtkTkRenderWidget")
>
>       self.viewer = Frame(myParentFunction, borderwidth = 2, relief =
> "ridge")
>       self.renderWidget = vtkTkRenderWidget(self.viewer)
>
>       self.viewer.pack(expand='true',fill='both')
>       self.renderWidget.pack(expand='true',fill='both')
>
> #########################################################################
> #
> #triplantest.py
>
> from Tkinter import *
>
> class Triplan(Tk):
>    def __init__(self, myFct):
>       Tk.__init__(self)
>
>       self.functions = myFct
>       self.title("Frame for vtkSliceWidget")
>
>       self.mainframe = Frame(self)
>       self.frame1 = Frame(self.mainframe, relief="ridge", borderwidth=2)
>
>       self.frame1.pack(expand='true',fill='both')
>       self.mainframe.pack(expand='true',fill='both')
>
> ###############################################################
> #bouton.py
>
> from Tkinter import *
> class Bouton(Tk):
>
>    def __init__(self, myFunctions):
>       Tk.__init__(self)
>       self.functions = myFunctions
>       self.title("Click On Button")
>       self.frame = Frame(self)
>       self.bouton = Button(self.frame, text = "click \nhere",
>        command = lambda:
>          self.functions.show(self.functions.triplan)
>       )
>
>       self.frame.pack(expand='true',fill='both')
>       self.bouton.pack(expand='true',fill='both')
>
> ######################################################################3
>
> If you run "python testfunc.py" you will see the error. It's the same I
> have in the full software.
>
> Somebody have any idea why it's not working and how to solve it?
> It seams, vtkTkRenderWidget cannot be call twice. But I don't know how to
> solve it.
>
> Thank you for your attention
> Best regards
> Alexandre Thinnes
>
>
> Je dois avoir un probleme de mail avec l'AIST.
> Il semble que l'adresse qui envois les mails ne soit pas celle qui les
> recois. >_<
>
> Accédez au courrier électronique de La Poste : www.laposte.net ;
> 3615 LAPOSTENET (0,34?/mn) ; tél : 08 92 68 13 50 (0,34?/mn)
>
>
>




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