Mailman 3 April 2009 - Tkinter-discuss

Tkinter Geometry Management and Other Basics
by Wayne Watson July 26, 2009

July 26, 2009

5 6

Re: [Tkinter-discuss] ttk style dilema
by Sorin Schwimmer April 28, 2009

April 28, 2009

Thanks everyone, SxN __________________________________________________________________ Reclaim your name @ymail.com or @rocketmail.com. Get your new email address now! Go to http://ca.promos.yahoo.com/jacko/

1 0

Re: [Tkinter-discuss] ttk style dilema
by Sorin Schwimmer April 27, 2009

April 27, 2009

Hi Guilherme, First of all, *I thank you* for providing pyttk. Next, your suggestions are exactly what I was looking for. The following prototype is showing what am I after (ugly, no classes, but take it as a prototype): #! /usr/bin/env python # -*- coding: iso-8859-1 -*- import ttk from ttk import Tkinter as tk import tkFont r=tk.Tk() vPcode=tk.StringVar() vPcode.set('Postal code') st=ttk.Style() st.configure('I.TEntry',foreground='gray',background='white') st.map('I.TEntry',selectforeground=[('!disabled','gray')],selectbackground=[('!d isabled','white')]) ePcode=ttk.Entry(r,textvariable=vPcode,style='I.TEntry',width=12) efn=tkFont.Font(font=str(ePcode['font'])) fn=tkFont.Font(font=str(ePcode['font'])) fn['slant']='italic' ePcode['font']=fn ePcode.grid() def postal(ev): global r,vPcode,ePcode if ev.keysym=='Return': ttk.Label(r,text='Done successfully').grid() elif vPcode.get()=='Postal code': ePcode['style']='I.TEntry' ePcode['font']=fn else: ePcode['style']='TEntry' ePcode['font']=efn ePcode.select_range(0,tk.END) ePcode.bind('<KeyRelease>',lambda ev: postal(ev)) ePcode.focus() r.mainloop() It works beautifully, thanks to your advice. How can I get rid of the rectangle surrounding the selected text (I suppose another style.map option)? Or, even better, where can I find some docs regarding the names of all these elements, and their expected values? Best regards, SxN __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

3 2

Re: [Tkinter-discuss] Anti-procedural prejudice? (was: ttk style dilema)
by Sorin Schwimmer April 27, 2009

April 27, 2009

>> Next, your suggestions are exactly what I was looking for. The following >> prototype is showing what am I after (ugly, no classes, but take it as a >> prototype): > . > . > . > We're not saying that good Python code must be expressed > with classes, are we? No, we aren't. In fact, in many of my real-life applications I'm using procedural or functional code, according to what I feel suits better the given situation. Moreover, when I wrote "ugly", I wasn't meaning "classless", but rather using "r" instead of "root", "st" instead of "style", "a=b" instead of "a = b" and so on. "no classes" is just a reference to the traditional (and rationally justified) use of classes in a GUI context. I hope this clarifies things out :-) SxN __________________________________________________________________ Yahoo! Canada Toolbar: Search from anywhere on the web, and bookmark your favourite sites. Download it now http://ca.toolbar.yahoo.com.

1 0

ttk style dilema
by Sorin Schwimmer April 27, 2009

April 27, 2009

Hi All, I installed recently tcl/tk 8.5.6, Python 2.6.2 and pyttk 0.3 on a Linux (Gentoo) machine. I would like to be able to change two things in entries: - the font should be the default, but in italics - selected text in an entry should have white background and gray foreground How can I accomplish that? How can I determine what is the actual TkDefaultFont? Thanks SxN __________________________________________________________________ Be smarter than spam. See how smart SpamGuard is at giving junk email the boot with the All-new Yahoo! Mail. Click on Options in Mail and switch to New Mail today or register for free at http://mail.yahoo.ca

3 2

Re: [Tkinter-discuss] ttk style dilema
by Sorin Schwimmer April 27, 2009

April 27, 2009

Hi Mick, Thanks for your reply. It doesn't answer my question though, as your solution is for "classic" Tkinter, while my inquiry is for themed tk. What will be the approach in ttk? Thanks again, SxN __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

2 1

Changing the label of a tix.NoteBook tab
by Luke Maurits April 26, 2009

April 26, 2009

Greetings all, I have a question about changing the label of a tab in a tix.NoteBook widget. Suppose I create a NoteBook and insert a tab (or "page", to use the proper Tk terminology) like this: nb = tix.NoteBook(master) page = nb.add("a_tab",label="Foo") and later I decide that I want to change the tab label from "Foo" to "Bar". How do I go about this? If I try: page.config(label="Bar") I receive the following complaint: Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/lib/python3.0/tkinter/__init__.py", line 1193, in configure return self._configure('configure', cnf, kw) File "/usr/lib/python3.0/tkinter/__init__.py", line 1184, in _configure self.tk.call(_flatten((self._w, cmd)) + self._options(cnf)) _tkinter.TclError: unknown option "-label" I haven't been able to find any examples of the correct way to change a tab label *anywhere* on the web. After reading the class definition for NoteBook in /usr/lib/python3.0/tkinter/tix.py, making a guess about the meaning of the tk.call method, and looking at this webpage: http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixNoteBook.htm I took a stab in the dark and tried the following bit of code: nb.tk.call(nb._w,"pageconfigure","tab",*nb._options({},{"label":"Bar"})) and, lo, it worked! The problem is that I have only the fuzziest understanding of *why* it worked and I'm pretty sure that this isn't the way I'm supposed to do it. Have I missed something stupid? The fact that the "pageconfigure" functionality provided by Tk is not exposed through a nice and friendly method on the NoteBook class suggests to me that either somebody just plain forgot to do it (unlikely) or (more likely) it was deemed unecessary because there is some other way to go about it, similar to my page.config attempt but a little different. Any information the list can provide me on this would be appreciated. If it helps, my Tk version is 8.5.6, my Python version is 3.0.1, and my Linux kernel version is 2.6.26. Thanks, Luke

2 4

looking for a multiline equivalent of tkSimpleDialog.askstring
by PaterMaximus April 23, 2009

April 23, 2009

any help appreciated

2 1

Re: [Tkinter-discuss] after_cancel?
by Wayne Watson April 21, 2009

April 21, 2009

Thanks. The code I'm looking at, not mine, has the concept of an "after" video event (it takes about 8 seconds) that added some confusion to what the code does. I wasn't sure if the after_cancel wasn't related to it and some Tk widget. Jeff Epler wrote: > after, after_idle, and after_cancel map to the 3 main forms of the tcl > "after" command. > > This command is used to delay execution of the program or to execute > a command in background sometime in the future. It has several forms, > depending on the first argument to the command: > > [...] > after cancel id > Cancels the execution of a delayed command that was previously > scheduled. Id indicates which command should be canceled; it > must have been the return value from a previous after command. If the > command given by id has already been executed then the after cancel > command has no effect. > > -- from http://www.tcl.tk/man/tcl8.4/TclCmd/after.htm > > One use of "after" is in autoscrolling or autorepeat. When the starting > event is seen, the repeat is scheduled with "after". Each time the > repeat runs, it schedules itself again with "after". When the ending > event is seen, the repeat is cancelled with "after cancel". To do this, > tue id returned by the last "after" is stored somewhere. > > Jeff > > -- Wayne Watson (Watson Adventures, Prop., Nevada City, CA) (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7" N, 121° 2' 32" W, 2700 feet All the neutrons, and protons in the human body occupy a cube whose side is 5.52*10**-6 meters (tiny!). That adds up to a 150 pound person. It's not a surprise that we are mostly space. (Calculation by WTW)

1 0

How to distinguish canvas items (2)
by Ben Koopmanschap April 19, 2009

April 19, 2009

Hello everyone! Just discovered the trick to bind and distinguish specific items on the canvas in Tkinter :) According to 'Programming python' from Mark Lutz, page 541 it is possible with the widget.find_closest method to bind a specific item on a canvas. Just what I've been looking for! So I can change my formerly posted snippet to: def mouseDown(self, event): # remember where the mouse went down self.lastx = event.x self.lasty = event.y print event.widget.find_closest(event.x, event.y) # <-- this does the trick Tested this out and it works very well! Hope this will others pointing in the right direction! With regards, - Ben

1 0