Mailman 3 August 2009 - Tkinter-discuss

Create Buttons on the fly
by John Jack Aug. 31, 2009

Aug. 31, 2009

Hello all, I have a long list of objects, which I print to a GUI. I want to filter this list, print the filtered list to the GUI, but maintain the ability to look at the previous lists. My program currently takes the list (L1), prints it to a Listbox, and adds a button (B1) for the list. Next, I filter the list, print the new filtered list (L2 subset of L1) to the same Listbox (removing the elements of L1 not in L2), and add an additional button for the new list. And so on... How do I find a way to associate the old list L1 to the command for the button (B1)? Note, I do not want to create a separate command for each button because I want to run an unlimited number of filters. I need to have B1 linked to L1, B2 linked to L2, B3 linked to L3, etc. Here is some relevant code (n.b., the whole project is much larger, so this is merely a snippet). #n.b., L from the description above is all_entities. So, L1 is all_entities[1], etc. #filter_group is an index tracking the current group to be filtered. #Filter the list def search_entities(self): tmp1 = askstring('Search Entity','Entity Type',initialvalue='gene') filtered = [] #Create sublist for ent in self.backend.all_entities[self.filter_group]: if ent.etype.endswith("findthisstring"): filtered.append(ent) #Store sublist self.backend.all_entities.append(filtered) self.filter_group += 1 self.add_filter_button() def add_filter_button(self): tmp = 'B%s' % self.filter_group filt = Button(self,text = tmp,command=self.fill_listbox(self)) filt.grid(row=3,column=self.filter_group,sticky=E) self.fill_listbox() def fill_listbox(self): #clear listbox if self.ent_listbox.size() > 0: self.ent_listbox.delete(0,END) #Restore list box for ent in self.backend.all_entities[self.filter_group]: self.ent_listbox.insert(END,ent.name) The way my code exists now, I would need to modify the variable filter_group when I click a button. How can I accomplish this? How do I tell filter_group to be 1 if I click button 1 and 2 if I click button 2? Sorry if this post is long. Let me know if you need more information. Python v2.6 (Linux)

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How do I identify which menu item has bee selected?
by thicket Aug. 19, 2009

Aug. 19, 2009

Hi - am using python 2.6 and Tkinter 8.5. I would like to know how to identify which 'menu item' has been selected from a cascaded menu. The cascaded menu menu items are variable and created on the fly. The idea is to use a common callback for all menu items, the callback function then determines which selection was made and runs the appropriate function. I have tried binding an event to the selection and then trying to get some sort of info from the event object (event.widget()) but this appears to return info about the menu class instance and not about it's menu items. I've used Java in the past - and if I recall correctly - a menu-item is a class, in python it seems to be an attribute(list entry) of the menu class - in which case - how do I interrogate it if I do not know it's index? Any help is appreciated - it's starting to do my head in!! -- View this message in context: http://www.nabble.com/How-do-I-identify-which-menu-item-has-bee-selected--t… Sent from the Python - tkinter-discuss mailing list archive at Nabble.com.

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How to direct a text on Tkinter
by papieminem Aug. 18, 2009

Aug. 18, 2009

HI On Tkinter we can only write from left to right. How to do , if we want to write from right to left for exmple or Vertically or Diagonally. Thank -- View this message in context: http://www.nabble.com/How-to-direct-a-text-on-Tkinter-tp24976455p24976455.h… Sent from the Python - tkinter-discuss mailing list archive at Nabble.com.

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Re: [Tkinter-discuss] How to direct a text on Tkinter
by Sorin Schwimmer Aug. 16, 2009

Aug. 16, 2009

I suggest to have a look at tkZinc (www.tkzinc.org). It is a Canvas++, so to speak, and I was able to make small maps of the "how to find us" kind. Some street names were shown horizontally, some vertically; I understand you need something similar. Good luck, SxN __________________________________________________________________ The new Internet Explorer® 8 - Faster, safer, easier. Optimized for Yahoo! Get it Now for Free! at http://downloads.yahoo.com/ca/internetexplorer/

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ARGB/animated cursors for Tkinter widgets under X.org
by Igor Novikov Aug. 8, 2009

Aug. 8, 2009

Hi all! We have released small python extension - tkXcursor. The package provides custom ARGB/animated cursor support for Tkinter widgets under X.org If anybody is interested, source code and short description are here: http://sk1project.org/viewpage.php?page_id=20 Regards, Igor Novikov sK1 Project http://sk1project.org

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command for dynamic buttons
by boivie Aug. 7, 2009

Aug. 7, 2009

Hello! I'm making an application with lots of similar buttons. But I can't figure out how to make the command unique for each button. I tried to follow the advice in http://mail.python.org/pipermail/python-list/2002-July/152242.html this old message, but every button still gives the same output. class Program: def __init__(self, ruta): bokst = ['а', 'б', 'в', 'г', 'д', 'е', 'ё', 'ж', 'з', 'и', 'й', 'к'] i = 1 for option in bokst: laddaKnapp = lambda index=0, obj=self: obj.tryck(option) knapp = Button(self.nere, text=str(option), command=laddaKnapp) knapp.grid(row=1, column=i) i = i + 1 def tryck(self, bokstav): self.currText.set(bokstav) return I found how to do it in pygtk in http://www.pygtk.org/pygtk2tutorial/examples/clipboard.py this example , but I've not been able to find a singel example of dynamic buttons in tkinter. -- View this message in context: http://www.nabble.com/command-for-dynamic-buttons-tp24872360p24872360.html Sent from the Python - tkinter-discuss mailing list archive at Nabble.com.

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tkFileDialog.askopenfilenames returns unicode string instead of tuple in python 2.62
by Johnny Vestergaard Aug. 1, 2009

Aug. 1, 2009

Hi, I recently upgraded from Python 2.4 to Python 2.6.2 and have had some unexpected issues with unicode. I had the following code working properly in 2.4: ---code start--- import Tkinter import tkFileDialog root = Tkinter.Tk() input_files = tkFileDialog.askopenfilenames(filetypes = [('.TXT files', '.txt')], title ="Select files", multiple = 1 ) print type(input_files) for file in input_files: print file Tkinter.mainloop() ---code end--- In 2.4 it returned a tuple containing the selected filenames, but in 2.6.2 it seems to return a unicode string (which i cant really use for anything). It is the same computerm using (windows XP), only difference is the version of Python. Any hints to what might be going on? The output from 2.6.2: <type 'unicode'> { C : / D o c u m e n t s a n d s e t t i n g s ..... and continues that way

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