Mailman 3 April 2008 - Tkinter-discuss

Possibly n00bish question about ImageTk
by Barnesdesdes Feb. 10, 2009

Feb. 10, 2009

I've been trying to make a program which will import a png file and display it inside a frame. It actually works when I just run the code, but if I try to abstract the exact same code into a function, it fails. In the code below, if I just run it, it works. However, if I comment out the lines between "root=Tkinter.Tk()" and "moo(root)" and comment in "moo(root)", it no longer works. Instead of displaying the image, it just displays a gray frame of the correct size. Does anyone have any insights about what I'm doing wrong? import Image, ImageTk, Tkinter def moo(master): img = Image.open('plotfig.png') f = Tkinter.Frame(master, width=800, height=600) pi = ImageTk.PhotoImage(img) t = Tkinter.Label(f, image=pi) f.pack() t.place(x=0, y=0, width=800, height=600) t.pack() root = Tkinter.Tk() img = Image.open('plotfig.png') f = Tkinter.Frame(root, width=800, height=600) pi = ImageTk.PhotoImage(img) t = Tkinter.Label(f, image=pi) f.pack() t.place(x=0, y=0, width=800, height=600) t.pack() #moo(root) root.mainloop() Thanks very much. Alan -- View this message in context: http://www.nabble.com/Possibly-n00bish-question-about-ImageTk-tf3990201.htm… Sent from the Python - tkinter-discuss mailing list archive at Nabble.com.

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Listbox selection persistence
by leegold May 3, 2008

May 3, 2008

Hi, I guess there's something basic I need to know. Given the code below if I press the button and p and q is highlighted then close the window I get: Output: >>> dddd [] ('15', '16') dddd [] But the x does not seem to persist outside of the def selected() block. I want the final last button press to persist so I can use those indexes for further processing. What am I missing here? Thanks. import sys, string, Tkinter from Tkinter import * root=Tkinter.Tk() frame=Tkinter.Frame(root) listbox=Listbox(frame, height=27,selectmode=MULTIPLE, font=('courier', 12)) listbox.pack(side=LEFT,fill=BOTH, expand=1) choices=map(chr, range(97, 123)) for item in choices: listbox.insert(END, item) frame.pack(fill=BOTH, expand=1) def selected(): x = listbox.curselection() print x zz='dddd' btn = Button(root, text = "Click for values", command = selected) btn.pack() #test print zz print x root.mainloop() #test print zz print x

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Re: [Tkinter-discuss] Dynamic output of "DOS" command in tkinter
by Martin Franklin April 25, 2008

April 25, 2008

AbsoluteMatt wrote: > Hi Guys, > > This is my first post here and my first time developing a tkinter app - so > please go easy:-) I have to say I have found it really nice so far, but am > struggling on one point. > > What I want to be able to do is take a system command and "pipe" it to a > scrollable window, however I would like it to follow the execution of the > command dynamically. The command that I am running is not one that will > execute in a few seconds allowing me to send the result to a scrollable > window - which I understand how to do. > The link below shows an example of someone doing this: > http://mail.python.org/pipermail/python-list/2004-September/281344.html > > What I am actually doing is running an oracle IMP command and would like to > follow the imported tables/rows etc from the app > > Any suggestion about how to display in this way do this would be much > appreciated. > > Many Thanks, > > Matt > > Hi Matt, this is not so much a tkinter problem, more a subprocess / popen thing :) I've done this in the past with a simple while 1: loop... proc = os.popen("imp big_oracle_xport_file.exp") while 1: line = proc.readline() if not line: break textBox.write(line) of course this will block and wait for the command to write another line to stdout... I'm sure there are better ways to do this by now, its been a while since I looked at the popen family (subprocess module now too I think...?) in any case the main python list would be my next stop after I checked the python doc's for popen, subprocess, command etc etc :) Cheers Martin -- signature file not found, must be something I ate

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How to get PyopenGL work with Tkinter(as part of python 2.5)?
by chenguang Zhang April 24, 2008

April 24, 2008

I think this must be an old question, but I still raise it for I can't bear any more failures. I'm really frustrated when the error message as the following pops up again and again... "Traceback (most recent call last): File "poly.py", line 14, in <module> from OpenGL.Tk import * File "D:\Python25\lib\site-packages\pyopengl-3.0.0b1.0001- py2.5.egg\OpenGL\Tk\__init__.py", line 87, in <module> _default_root.tk.call('package', 'require', 'Togl') _tkinter.TclError: can't find package Togl" I guess togl is not a must for the cooperation of PyopenGL and Tkinter, but just a guess. Could anyone help me out? My question can be summarized into a twofold one: a.Can pyopengl work with tkinter(as part of Python 2.5) without involving togl? How? (an sample code or useful link would be greatly appreciated) if the answer to question a is "NOT", then... b.How can I fix the error:"_tkinter.TclError: can't find package Togl"? Any help would be appreciated!

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Dynamic output of "DOS" command in tkinter
by AbsoluteMatt April 24, 2008

April 24, 2008

Hi Guys, This is my first post here and my first time developing a tkinter app - so please go easy:-) I have to say I have found it really nice so far, but am struggling on one point. What I want to be able to do is take a system command and "pipe" it to a scrollable window, however I would like it to follow the execution of the command dynamically. The command that I am running is not one that will execute in a few seconds allowing me to send the result to a scrollable window - which I understand how to do. The link below shows an example of someone doing this: http://mail.python.org/pipermail/python-list/2004-September/281344.html What I am actually doing is running an oracle IMP command and would like to follow the imported tables/rows etc from the app Any suggestion about how to display in this way do this would be much appreciated. Many Thanks, Matt -- View this message in context: http://www.nabble.com/Dynamic-output-of-%22DOS%22-command-in-tkinter-tp1684… Sent from the Python - tkinter-discuss mailing list archive at Nabble.com.

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Text widget tag_bind(), can't get it to work.
by ron.longo April 23, 2008

April 23, 2008

I'm trying to catch a keypress event in a tagged region of text. According to the documentation this should work, however, my callback never gets called. Here's some test code: from Tkinter import * def typed( event=None ): print 'typed' def moved( event=None ): print 'moved' root = Tk() text = Text( root ) text.pack() text.insert( '1.0', '0123456789012345678901234567890' ) text.tag_add( 'try', '1.10', '1.19' ) text.tag_bind( 'try', '<Key>', typed ) text.tag_bind( 'try', '<Motion>', moved ) root.mainloop( ) So, my moved function gets called whenever the mouse enters and moves within the tagged region. However, if I have the insert cursor in the tagged region and press any key, my typed function never gets called. Am I doing this incorrectly? Am I misunderstanding how this is supposed to work? Thanks, Ron -- View this message in context: http://www.nabble.com/Text-widget-tag_bind%28%29%2C-can%27t-get-it-to-work.… Sent from the Python - tkinter-discuss mailing list archive at Nabble.com.

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Newbie's Scrollbar question
by solaris_1234 April 20, 2008

April 20, 2008

Is there a way to get a Scrollbar widget to control two widgets? I would like to do something like: ... self.textbox1 = Text(self.myc, yscrollbarcommand=self.scrollbar1.set) self.textbox2 = Text(self.myc, yscrollbarcommand=self.scrollbar1.set) self.scrollbar1.config(command=self.textbox1.yview) self.scrollbar1.config(command=self.textbox2.yview) .... I understand the second self.scrollbar1.config is the only valid binding for scrollbar1. Any hints on how to do this ? Thanks, tkinter newbie --------------------------------- Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now.

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running a command with input from a widget
by Amit Finkler April 16, 2008

April 16, 2008

Hi, I created a function which has the following format, def setrange_rod(heater_range): """ Set heater range (0,1,2,3) to Lakeshore 330 """ lakeshore = devices.getDeviceByAddress(int(LakeAdr.get())) lakeshore.setrange(heater_range) Never mind right now what the first line in the function does. It is suffice to say that it creates the lakeshore class and that if I call it from the console with the .setrange(heater_range), it works (heater_range in my case is either 0, 1, 2 or 3) I'm trying to call it from a Menu widget heater = Menu( win3 , tearoff = 0 ) set_range_rod = Menu( heater, tearoff = 0 ) set_range_rod.add_command( label = "OFF", command = setrange_rod(0)) set_range_rod.add_command( label = "LOW", command = setrange_rod(1)) set_range_rod.add_command( label = "MEDIUM", command = setrange_rod(2)) set_range_rod.add_command( label = "HIGH", command = setrange_rod(3)) heater.add_cascade(label = "Rod", menu = set_range_rod) win3.config( menu=heater ) When I import the module, it automatically sets itself on the last option ("HIGH") and I cannot change it by choosing one of the other options in the menu. Does this happen because I wrote a "command = setrange(specific_value)"? If I use the same code but with a inputless function, i.e., "command = setrange_rod", assuming the setrange_rod is an inputless function - everything works fine. Hence my question. I apologize if my code is a bit messy, but I'm in the stages of renovations in the main code (aren't we always?). If you want, I can send it in its full glory, but then I think that decent programmers would start vomiting... :-) Any help or suggestions will be appreciated. Amit.

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FocusOut on a popup widget
by Vasilis Vlachoudis April 15, 2008

April 15, 2008

Dear all, in my application I have developed a small widget class "InPlaceEdit" to allow the user to edit in place the content of an item from a listbox. The class is creating a temporary popup Entry() (or overridden with any other widget) and placing it exactly on the coordinates of the listbox item to edit. Now my problem is the following. I am binding the <FocusOut> so when the user clicks outside the widget, to destroy the widget and replace the value in the listbox. But, if the user clicks on a button, then the program first executes the command of the button and then it sends the <FocusOut> event to the InPlaceEdit, with an end result that the content is updated after the command is executed. The same happens also with Menu entries. What should I bind to get a notification that I will lose the focus (or something similar) before executing the command of the button? Vasilis #=============================================================================== # Class to edit in place the contents of a listbox #=============================================================================== class InPlaceEdit: def __init__(self, listbox, item=ACTIVE, value=None): # Return value self.value = None # Result self.item = item # Find active try: self.active = listbox.index(self.item) except: return self.listbox = listbox # Create and set value self.frame = Frame(listbox, relief=None) self.createWidget() self.set(value) self.defaultBinds() # Bindings self.frame.bind("<FocusOut>", self.focusOut) self.frame.bind("<Unmap>", self.cancel) self.listbox.bind("<Configure>", self.resize) # Show and wait to be destroyed self.resize() self.frame.wait_window() # ---------------------------------------------------------------------- # Override method if another widget is requested # ---------------------------------------------------------------------- def createWidget(self): self.edit = Entry(self.frame, background="White") self.edit.pack(expand=YES, fill=BOTH) self.edit.focus_set() # ---------------------------------------------------------------------- # Set default bindings # ---------------------------------------------------------------------- def defaultBinds(self): try: self.edit.bind("<Return>", self.ok) self.edit.bind("<Escape>", self.cancel) except AttributeError: pass # ---------------------------------------------------------------------- def resize(self, event=None): x, y, w, h = self.listbox.bbox(self.item) w = self.listbox.winfo_width() h += 2 try: self.frame.place(in_=self.listbox, x=x-1, y=y-1, width=w, height=h, bordermode=OUTSIDE) self.frame.update_idletasks() except TclError: pass # ---------------------------------------------------------------------- # Override method to set the value # ---------------------------------------------------------------------- def set(self, value): if value is None: value = self.listbox.get(self.item) self.edit.delete(0, END) self.edit.insert(0, value) self.edit.selection_range(0, END) # ---------------------------------------------------------------------- # Override method to get the value # ---------------------------------------------------------------------- def get(self): return self.edit.get() # ---------------------------------------------------------------------- def ok(self, event=None): self.value = self.get() self.frame.unbind('<FocusOut>') self.frame.place_forget() self.frame.destroy() self.listbox.focus_set() act = self.listbox.index(ACTIVE) sel = self.listbox.selection_includes(self.active) self.listbox.delete(self.active) self.listbox.insert(self.active, self.value) if sel: self.listbox.selection_set(self.active) self.listbox.activate(act) return "break" # ---------------------------------------------------------------------- def focusOut(self, event=None): self.ok() # ---------------------------------------------------------------------- def cancel(self, event=None): self.frame.place_forget() self.frame.destroy() self.listbox.focus_set() return "break"

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PyGTK to Tkinter wrapper
by mtasic85 April 15, 2008

April 15, 2008

Hi everyone, With all due respect to Tkinter and PyGTK developers, the starting idea was to make PyGTK code compatible with pygtk2tk without changing anything else except importing modules. The obvious use of pygtk2tk is having PyGTK code without having PyGTK installed. And the sweetest fact is that Tkinter is included by default in Python. This wrapper isn't completed, and it's in an early stage, so it'll require additional effort to be done, soon :) Currently, it supports following classes/widgets: GObject, Object, Widget, Container, Bin, Window, Box, HBox, VBox, Table, Button, ToggleButton, CheckButton, RadioButton, Label, and Entry. Basic examples from PyGTK tutorial are also included, and everything should work simply by running them without any installation, and modifications. Only parts which are modified in examples are parts where are import's statements at the beginning of source code. http://code.google.com/p/pygtk2tk/ http://code.google.com/p/pygtk2tk/ Anyone who would like to contribute is welcome! -- View this message in context: http://www.nabble.com/PyGTK-to-Tkinter-wrapper-tp16699347p16699347.html Sent from the Python - tkinter-discuss mailing list archive at Nabble.com.

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