[Tkinter-discuss] Fwd: WxPython -> Tkinter
Olrik Lenstra
o.lenstra at gmail.com
Sun Nov 2 20:21:38 CET 2008
<< What I'm saying is that you won't even need ttk widgets for this, if
you stick to windows only. >>
Would that mean that the GUI in windows has other widgets that could
prevent it from hanging once I start executing some code? Without the
ttk widgets that is.
Regards,
Olrik
2008/11/2 Guilherme Polo <ggpolo at gmail.com>:
> On Sun, Nov 2, 2008 at 3:26 PM, Olrik Lenstra <o.lenstra at gmail.com> wrote:
>> I see. So I will have to go about and change all the Tk.Button() to
>> ttk.Button()?
>> The program I am making will be for the windows OS only.
>
> What I'm saying is that you won't even need ttk widgets for this, if
> you stick to windows only.
>
>>
>> Is the syntax for ttk the same as for Tkinter?
>
> ttk is still tcl/tk, it is just new widges and theming engine. If by
> same syntax you mean the widgets support the same options and methods,
> then no.
>
>>
>> Regards,
>> Olrik
>>
>> 2008/11/2 Guilherme Polo <ggpolo at gmail.com>:
>>> On Sun, Nov 2, 2008 at 12:34 PM, Olrik Lenstra <o.lenstra at gmail.com> wrote:
>>>> I would like to thank you already for all the help you've given me, it
>>>> is really appreciated :)
>>>
>>> You are welcome.
>>>
>>>> I decided to update to Python2.6 instead of using the tile pack. My
>>>> application now shows the GUI again.
>>>> So I added the code you gave me to prevent the window from hanging
>>>> once I execute my scan.
>>>> I get the following Traceback:
>>>>
>>>> D:\Documents\OLPrograms\TroubleShooting Olrik\sourcecode\TSO(source)>python TSO.
>>>> pyw
>>>> Exception in Tkinter callback
>>>> Traceback (most recent call last):
>>>> File "D:\Python26\lib\lib-tk\Tkinter.py", line 1410, in __call__
>>>> return self.func(*args)
>>>> File "D:\Documents\OLPrograms\TroubleShooting Olrik\sourcecode\TSO(source)\TSO
>>>> main.pyw", line 29, in OnScan
>>>> TSOscn.Scan(root, status)
>>>> File "D:\Documents\OLPrograms\TroubleShooting Olrik\sourcecode\TSO(source)\TSO
>>>> scn.pyw", line 23, in Scan
>>>> TSOex.safe_yield(Frame, True)
>>>> File "D:\Documents\OLPrograms\TroubleShooting Olrik\sourcecode\TSO(source)\TSO
>>>> ex.pyw", line 75, in safe_yield
>>>> window_disabler(window)
>>>> File "D:\Documents\OLPrograms\TroubleShooting Olrik\sourcecode\TSO(source)\TSO
>>>> ex.pyw", line 90, in window_disabler
>>>> if widget.instate(['!disabled']):
>>>> AttributeError: Button instance has no attribute 'instate'
>>>>
>>>
>>> That is because Button is not a ttk.Button, but a "normal"
>>> Tkinter.Button. I didn't know before you would be using windows, but
>>> since this is the case, you may try substituting the use of instate
>>> and state calls (that are available only for ttk widgets) by the use
>>> of widget.wm_attributes('-disabled', 1),
>>> widget.wm_attributes('-disabled', 0) and
>>> widget.wm_attributes('-disabled'). I will be able to test it here
>>> later since my new pc arrived with a windows vista.
>>>
>>>> D:\Documents\OLPrograms\TroubleShooting Olrik\sourcecode\TSO(source)>
>>>>
>>>> I don't know if it makes a difference, But I think you should know
>>>> that I use different files that import other applications (made by me)
>>>> Example:
>>>>
>>>> TSO.pyw is the main script, this looks if the very first argument is
>>>> "TSO.pyw", if it is, run "TSOmain.TSO()"
>>>> TSOmain.pyw is the GUI and the GUI only, from there it calls other files etc.
>>>> I hope that wasn't too confusing.
>>>>
>>>> Thanks again, I really appreciate it.
>>>>
>>>> Regards,
>>>> Olrik
>>>>
>>>> 2008/11/2 Guilherme Polo <ggpolo at gmail.com>:
>>>>> On Sun, Nov 2, 2008 at 10:34 AM, Olrik Lenstra <o.lenstra at gmail.com> wrote:
>>>>>> Hmm, I'm a bit stumped.
>>>>>> I installed the ttk module and tried applying the code.
>>>>>> However when I ran my code it gave me an error.
>>>>>> I thought I might have left a small typo in or something and removed
>>>>>> the code to check my own.
>>>>>>
>>>>>> After I removed the ttk import and code it wouldn't even run my own code again.
>>>>>> Below is the Traceback:
>>>>>>
>>>>>> C:\Users\Olrik Lenstra\Desktop\TroubleShooting Olrik>python TSO.pyw
>>>>>> Traceback (most recent call last):
>>>>>> File "TSO.pyw", line 24, in <module>
>>>>>> import TSOmain
>>>>>> File "C:\Users\Olrik Lenstra\Desktop\TroubleShooting Olrik\TSOmain.pyw", line
>>>>>> 79, in <module>
>>>>>> TSO()
>>>>>> File "C:\Users\Olrik Lenstra\Desktop\TroubleShooting Olrik\TSOmain.pyw", line
>>>>>> 37, in TSO
>>>>>> root = Tk.Tk()
>>>>>> File "D:\Python25\lib\lib-tk\Tkinter.py", line 1638, in __init__
>>>>>> self._loadtk()
>>>>>> File "D:\Python25\lib\site-packages\ttk.py", line 50, in _wrapper
>>>>>> self.tk.eval('package require tile') # TclError may be raised here
>>>>>> _tkinter.TclError: can't find package tile
>>>>>>
>>>>>
>>>>> You don't have tile installed neither was your tkinter compiled
>>>>> against tcl/tk 8.5.
>>>>> Python 2.6 already brings tcl/tk 8.5 and tkinter compiled against them.
>>>>> Another option is to download tile from:
>>>>> http://sourceforge.net/project/showfiles.php?group_id=11464&package_id=107795
>>>>> (get the tile082.zip so you have to do nothing at all). Then unpack
>>>>> that somewhere. Then you have to set the environment variable
>>>>> TILE_LIBRARY to the directory where this was unpacked, then you should
>>>>> be able to run the program with ttk.
>>>>> You could set this environment var inside your app too:
>>>>>
>>>>> import os
>>>>> os.environ['TILE_LIBRARY'] = 'x:/unpacked/tile/here'
>>>>>
>>>>> import ttk
>>>>>
>>>>> ....
>>>>>
>>>>>> C:\Users\Olrik Lenstra\Desktop\TroubleShooting Olrik>
>>>>>>
>>>>>>
>>>>>> Regards,
>>>>>> Olrik
>>>>>>
>>>>>> 2008/10/29 Olrik Lenstra <o.lenstra at gmail.com>:
>>>>>>> So that means that you will use a ttk frame instead of the Tkinter.Frame?
>>>>>>> I'll see if I can get this working once I get home. (my program is on my
>>>>>>> Desktop and I just do some testing on my laptop)
>>>>>>>
>>>>>>> Thanks a lot so far!
>>>>>>> Regards,
>>>>>>> Olrik
>>>>>>>
>>>>>>> 2008/10/29 Guilherme Polo <ggpolo at gmail.com>
>>>>>>>>
>>>>>>>> On 10/29/08, Olrik Lenstra <o.lenstra at gmail.com> wrote:
>>>>>>>> > I see, Thanks a lot, I really don't wish to bother you any further, but
>>>>>>>> > here's my current situation.
>>>>>>>> > I am still a beginning programmer and I am not entirely sure where to
>>>>>>>> > put
>>>>>>>> > this code exactly.
>>>>>>>> >
>>>>>>>> > How would I go about using this code?
>>>>>>>> >
>>>>>>>>
>>>>>>>> It should be very similar to what you are already doing in wx.
>>>>>>>>
>>>>>>>> But, you would need to layout your toplevel (the one that is created
>>>>>>>> when you call Tkinter.Tk()) as this:
>>>>>>>>
>>>>>>>> There would be a ttk.Frame that would hold all the other widgets,
>>>>>>>> which should be all ttk widgets according to this sample. Then you
>>>>>>>> would call safe_yield(frame, True) in the same situations you would in
>>>>>>>> wx. Now it remains to check if there is the same need for this in tk
>>>>>>>> as there is in wx.
>>>>>>>>
>>>>>>>> Finally, a sample way to layout the widgets:
>>>>>>>>
>>>>>>>> root = Tkinter.Tk()
>>>>>>>> frame = ttk.Frame(root)
>>>>>>>> btn1 = ttk.Button(frame, text="Button 1")
>>>>>>>> ...
>>>>>>>> ... some time later:
>>>>>>>> safe_yield(frame, True)
>>>>>>>> ...
>>>>>>>>
>>>>>>>> > Thank you so much in advance.
>>>>>>>> > Regards,
>>>>>>>> > Olrik
>>>>>>>> >
>>>>>>>> > 2008/10/29 Guilherme Polo <ggpolo at gmail.com>
>>>>>>>> >
>>>>>>>> > >
>>>>>>>> > >
>>>>>>>> > >
>>>>>>>> > > ---------- Forwarded message ----------
>>>>>>>> > > From: Guilherme Polo <ggpolo at gmail.com>
>>>>>>>> > > Date: Oct 29, 2008 9:16 AM
>>>>>>>> > > Subject: Re: [Tkinter-discuss] WxPython -> Tkinter
>>>>>>>> > > To: Olrik Lenstra <o.lenstra at gmail.com>
>>>>>>>> > > Cc: python-list at python.org
>>>>>>>> > >
>>>>>>>> > >
>>>>>>>> > > On 10/29/08, Olrik Lenstra <o.lenstra at gmail.com> wrote:
>>>>>>>> > > > Hello everyone,
>>>>>>>> > > >
>>>>>>>> > > > A while ago I joined the Tutor mailing list, and they helped me out
>>>>>>>> > with a
>>>>>>>> > > > question regarding wxPython.
>>>>>>>> > > > Now however, I have tried a program in Tkinter and I would like to
>>>>>>>> > > see
>>>>>>>> > if
>>>>>>>> > > > there is a similar command to "wx.SafeYield(self, True)".
>>>>>>>> > >
>>>>>>>> > >
>>>>>>>> > > It will be a combination of commands, not a single one. Initially I
>>>>>>>> > > considered this as "probably without solution", since tcl acquired a
>>>>>>>> > > yield command just in the 8.6a3 release, but then I looked at
>>>>>>>> > > wx.SafeYield code and apparently it is possible to replicate it.
>>>>>>>> > >
>>>>>>>> > > Here is an initial cut, it is very possible to contain something not
>>>>>>>> > > equivalent to wx.SafeYield (besides it could be improved):
>>>>>>>> > >
>>>>>>>> > >
>>>>>>>> > > import ttk
>>>>>>>> > >
>>>>>>>> > > inside_tkyield = False
>>>>>>>> > > disabled_wins = {}
>>>>>>>> > >
>>>>>>>> > > def safe_yield(window, only_if_needed=False):
>>>>>>>> > > window_disabler(window)
>>>>>>>> > >
>>>>>>>> > > try:
>>>>>>>> > > return tk_yield(window, only_if_needed)
>>>>>>>> > > finally:
>>>>>>>> > > for widget, flags in disabled_wins.iteritems():
>>>>>>>> > > ttk.Widget.state(widget, flags)
>>>>>>>> > > disabled_wins.clear()
>>>>>>>> > >
>>>>>>>> > >
>>>>>>>> > > def window_disabler(window):
>>>>>>>> > > widgets = window.children.values()
>>>>>>>> > > widgets.append(window)
>>>>>>>> > >
>>>>>>>> > > for widget in widgets:
>>>>>>>> > > if widget.instate(['!disabled']):
>>>>>>>> > > prev_flags = widget.state(['disabled'])
>>>>>>>> > > disabled_wins[widget] = prev_flags
>>>>>>>> > >
>>>>>>>> > >
>>>>>>>> > > def tk_yield(window, only_if_needed=False):
>>>>>>>> > > # wx implements this differently based on the backend it is using
>>>>>>>> > > global inside_tkyield
>>>>>>>> > > if inside_tkyield:
>>>>>>>> > > if not only_if_needed:
>>>>>>>> > > raise RuntimeError("safe_yield called recursively")
>>>>>>>> > >
>>>>>>>> > > return False
>>>>>>>> > >
>>>>>>>> > > inside_tkyield = True;
>>>>>>>> > >
>>>>>>>> > > window.update()
>>>>>>>> > > window.update_idletasks()
>>>>>>>> > >
>>>>>>>> > > inside_tkyield = False;
>>>>>>>> > >
>>>>>>>> > > return True
>>>>>>>> > >
>>>>>>>> > >
>>>>>>>> > > Note that this depends on ttk widgets
>>>>>>>> > > (http://pypi.python.org/pypi/pyttk) since it uses
>>>>>>>> > widget.state to
>>>>>>>> > > disable and reenable the widgets. On windows the "wm" command
>>>>>>>> > > supports
>>>>>>>> > > disabling the entire window, so it is easier if you can use it.
>>>>>>>> > >
>>>>>>>> > > [Forwarded because I sent to the wrong list first time]
>>>>>>>> > >
>>>>>>>> > >
>>>>>>>> > > > Below is a copy of the message to the tutor list.
>>>>>>>> > > >
>>>>>>>> > > > > Dear Mailing list,
>>>>>>>> > > > >
>>>>>>>> > > > > a while ago a few of you helped me solve an issue I had with a
>>>>>>>> > > GUI /
>>>>>>>> > scan
>>>>>>>> > > > > program that I made.
>>>>>>>> > > > > The problem was that when I tried to move the frame it would hang
>>>>>>>> > until
>>>>>>>> > > > the
>>>>>>>> > > > > scan was finished.
>>>>>>>> > > > > To solve this I had to add "wx.SafeYield(self, True)" to the scan
>>>>>>>> > > and
>>>>>>>> > the
>>>>>>>> > > > > GUI wouldn't hang any more.
>>>>>>>> > > > > Now I have redone the program and have written it with Tkinter
>>>>>>>> > instead of
>>>>>>>> > > > > WxPython.
>>>>>>>> > > > >
>>>>>>>> > > > > So is there a similar command for Tkinter as there is for
>>>>>>>> > > WxPython?
>>>>>>>> > > > >
>>>>>>>> > > > > Thanks in advance.
>>>>>>>> > > > > Regards,
>>>>>>>> > > > > Olrik
>>>>>>>> > > > >
>>>>>>>> > > >
>>>>>>>> > >
>>>>>>>> > > > _______________________________________________
>>>>>>>> > > > Tkinter-discuss mailing list
>>>>>>>> > > > Tkinter-discuss at python.org
>>>>>>>> > > >
>>>>>>>> > http://mail.python.org/mailman/listinfo/tkinter-discuss
>>>>>>>> > > >
>>>>>>>> > > >
>>>>>>>> > >
>>>>>>>> > >
>>>>>>>> > >
>>>>>>>> > > --
>>>>>>>> > > -- Guilherme H. Polo Goncalves
>>>>>>>> > >
>>>>>>>> > >
>>>>>>>> > > --
>>>>>>>> > > -- Guilherme H. Polo Goncalves
>>>>>>>> > >
>>>>>>>> > >
>>>>>>>> > >
>>>>>>>> > > _______________________________________________
>>>>>>>> > > Tkinter-discuss mailing list
>>>>>>>> > > Tkinter-discuss at python.org
>>>>>>>> > >
>>>>>>>> > http://mail.python.org/mailman/listinfo/tkinter-discuss
>>>>>>>> > >
>>>>>>>> >
>>>>>>>> >
>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>> -- Guilherme H. Polo Goncalves
>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> -- Guilherme H. Polo Goncalves
>>>>>
>>>>
>>>
>>>
>>>
>>> --
>>> -- Guilherme H. Polo Goncalves
>>>
>>
>
>
>
> --
> -- Guilherme H. Polo Goncalves
>
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