Mailman 3 October 2004 - Tkinter-discuss

Inserting a unicode zero-width nonbreaking space into a Text widget, from Tkinter, on a Mac
by Kenneth McDonald Nov. 3, 2004

Nov. 3, 2004

As the subject says, I am attempting to insert a particular unicode character (\ufeff) into a Text widget, from Python. This is not quite working correctly, and I'm not sure if the problem is between Python and Tcl, or is a problem of OS X not properly knowing the character. This character is supposed to be a 0-width space, and using Python's unicodedata.name function confirms that feff is in fact the proper unicode sequence. The character is construction using a one-character python string: zws = u"\ufeff" And then passed to Text's insert command. Unfortunately, what shows up on screen is a complex (perhaps Chinese) asian ideograph. "Python in a Nutshell" indicates that all communication between Tkinter and Tk is in unicode, so I had hoped this would transfer correctly. Not sure if I need to do some conversion or not...could there be a conflict between a straight Unicode (16-bit) representation and a UTF-8 representation? Or do I need to do an OS setting to make sure the OS and the internal representation are on the same wavelength? Thanks, Ken

5 6

Wiki now requires a login to change pages
by Jeff Epler Oct. 28, 2004

Oct. 28, 2004

There have been a growing number of defacements to the tkinter wiki. In order to create a small barrier to these defacements, I have changed the configuration so that authors must log in (by visiting the "UserPreferences" link shown at the top of each page) before editing pages. I've done my best to clean up after the defacements (links to sites that are at best unrelated to tkinter) including the removal of the defaced versions of the page, since search engines might even index those pages. If you see a defaced page, please revert it to the undefaced version and leave something obvious in the change comment so I can remove the archived defaced version too. Not so sure I like wikis anymore, Jeff

1 0

How to change Tk's size ?
by Xin Wang Oct. 22, 2004

Oct. 22, 2004

How to change Tk's size ? I used 'config(width=500, height=500)', but it dose not works! #*start from Tkinter import * root = Tk() root.config(width=500, height=500) bt = Button(root, text="hello") bt.pack() root.mainloop() #*end _______________________________ Do you Yahoo!? Declare Yourself - Register online to vote today! http://vote.yahoo.com

2 1

tk problem !!!
by francesco.grillo＠ciaolab.com Oct. 21, 2004

Oct. 21, 2004

Hi to all, I use python on win32 and since on windows the multithread support in the tk/tcl does not work at all i have to rewrite the graphical part of my application as a single thread is there anyone that can give me some tips (some src code samples )on how to write a graphical application with the entire graph manged by the main thread (the one that does mainloop() ) and with some threads that comunicate with it by the queue mechanism ? thanks , Francesco

2 1

text widget
by Attila Szabo Oct. 15, 2004

Oct. 15, 2004

Hi, I'm new to TK and like to create text widget that allows just 50 characters typed in and just 1 line. How to do that ? I tried to unbind the Return binding, but it doesn't work to allow just 1 line. How to limit the number of typed in characters ? Have to do myself or has the widget a ready solution ? thanks -- A t t i l a :: trial(a)ugyvitelszolgaltato.hu :: S z a b o

2 1

why this prog.py crash on win32 ?
by francesco.grillo＠ciaolab.com Oct. 14, 2004

Oct. 14, 2004

Hi guys, i am very surprised how this simple program can hung python (TCL/TK) . It works fine on a linux system but under windows not . Can anyone explain why and eventually which by pass apply ? If i want to write an aplication with a specialized thread that handles the graphic and that is different than the mainloop what i have to do ? thanks in advance , Francesco . # File: hello1.py from Tkinter import * import os import time import win32ui import threading from Tkinter import * import string import sys import glob import commands import win32api class App: def __init__(self,root ): self.r = root self.w = Toplevel(None, background = "#000053") self.w.geometry("200x200+0+0") self.w.resizable(0,0) self.frame = Frame(self.w,width=100,height=100,background = "#000053") self.frame.pack() self.button = Button(self.frame, text="QUIT", fg="red", command=self.frame.quit) self.button.pack(side=LEFT) self.button = Button(self.frame, text="max", fg="red", command=self.maxi) self.button.pack(side=LEFT) self.hi_there = Button(self.frame, text="min", command=self.mini) self.hi_there.pack(side=LEFT) def mini(self): print "MINI hi there, everyone!" self.r.deiconify() self.w.iconify() print "MINI after hi there, everyone!" def maxi(self): print "MAX hi there, everyone!" self.r.iconify() self.w.deiconify() print "MAX after hi there, everyone!" def grillo(root): print 'grillo ThreadID %x ' % win32api.GetCurrentThreadId() while(1): print 'iconify' time.sleep(2.0) root.mini() print 'deiconify' time.sleep(2.0) root.maxi() root = Tk() root.geometry("20x20") root.resizable(0,0) app = App(root) print 'main ThreadID %x ' % win32api.GetCurrentThreadId() gThread = threading.Thread(target=grillo,args=[app]) gThread.start() print 'main start mainloop %x ' % win32api.GetCurrentThreadId() root.mainloop()

2 1

Grayson's discussion forum on Tkinter
by stewart＠midtoad.homelinux.org Oct. 13, 2004

Oct. 13, 2004

There's a discussion forum associated with Grayson's book on 'Python and Tkinter Programming' over at Manning Books: http://www.manning-sandbox.com/forum.jspa?forumID=51&start=0 However, when I took a look at the discussion items, I don't see anything posted by Grayson himself in well over a year. Has he given up his involvement with Tkinter? If so, does this mean that there'll never be a 2nd edition of his book? Maybe we should encourage readers of that book to come to this discussion list instead. cheers S

2 1

how to disable individual sub-menu elements?
by stewart＠midtoad.homelinux.org Oct. 13, 2004

Oct. 13, 2004

I've got an app with a Pmw menubar. I can disable menu items, and enable them. For instance, to disable the first (0th) item in the Tools menu, I can write: self.menuBar.component('Tools-menu').entryconfig(0,state='disabled') Note that to access items in the Tools menu, I have to use the notation 'Tools-menu'. This is a sticking point, since it seems to indicate that I have to add '-menu' to a menu's name in order to access it. What would I do if the menu name had a space in it? So far, so good, however. But I don't see how to disable individual items under a cascaded sub-menu. For instance, under my Tools menu, I have a Build menu item with 2 cascaded sub-menu items. How would I disable the Build Initscript (0th) submenu? like the following? self.menuBar.component('Build-menu').entryconfig(0,state='disabled') (this doesn't work, BTW) And what if my menu name has a space in it? Here's the code that creates the submenus: self.menuBar.addcascademenu('Tools', 'Build', 'Build init script or linefill', traverseSpec = 'z', tearoff = 1, state = 'disabled', font = self.font) for viewer in ('Initscript', 'Linefill'): self.menuBar.addmenuitem('Build', 'command', 'Build ' + viewer, command = eval(toolsBldCmds[viewer]), font = self.font, label = 'Build ' + viewer) ''' toolsBldCmds = { 'Initscript': 'self.load', 'Linefill': 'self.edit_linefill'} ''' thx Stewart

1 0

pb with tcl / tk under win2000
by francesco.grillo＠ciaolab.com Oct. 13, 2004

Oct. 13, 2004

Hi to all , i have a blocking pb . I use python 2.3 with tk/tcl 8.4.7 under windows2000;i wrote an application that in the begining under window systems was very instable , frequently crashed now and then without a reason . I found out that recompiling the tcl / tk libraries with "TCL_THREADS=1" flag these instability went away . Unfortunatelly there is a side effect that is : Memory allocation grow each time a call to tk is done . Since my application heavly use tk and is supposed to stay on days and days without shuting down , what it happens is that, after a while the memory used by applications is increased by Megas . Below i wrote a very simple .py that demostrates how is easy to grab memory from the system just calling the bell method in an infinite loop . Thank for the help , Francesco Grillo from Tkinter import * import threading import time import gc import os class Ticker: def __init__(self): self.l = Label(text="W") print 'init ' def start(self): self.thread = threading.Thread(target=self.tickerThread) self.thread.start() def tickerThread(self): while(1): self.l.bell() root = Tk() root.geometry("200x150+0+0") ticker1 = Ticker() ticker1.start() root.mainloop()

2 1

prevent a Tkinter app from maximizing?
by stewart＠midtoad.homelinux.org Oct. 13, 2004

Oct. 13, 2004

Is it possible to prevent a Tkinter app from being maximized? I'm guessing it would require some kind of WM_xxx protocol , but I don't see reference to anything but WM_DELETE_WINDOW in the tkinter documenatation at pythonware.com. thanks S

2 2