Mailman 3 September 2006 - Tkinter-discuss

Framed
by Cam Nov. 28, 2006

Nov. 28, 2006

Hello list, The following little test program works as expected. But if you change the line marked "----- Here ----" so it reads: self.Frame2 = Pmw.ScrolledFrame(self) then it blows up on an error deep inside Tkinter when attempting to create the button mentioned on the following line. All I wanted to do was trade a Frame for a ScrolledFrame. I'm stumped as to why it blows up. Anybody out there know? Thanks Cam ps I realize that in this example Frame2 is redundant. I encountered the problem in a larger case. To generate the example shown below I stripped out pretty much everything that wasn't necessary to demonstrate the problem. - - - - - import Pmw from Tkinter import * class Test(Frame): def __init__(self,Master=None,**kw): apply(Frame.__init__,(self,Master),kw) self.Frame2 = Frame(self) #<---- HERE ---- self.Frame2.pack(side='left') self.Button1 = Button(self.Frame2) self.Button1.pack(side='top') Root = Tk() Pmw.initialise(Root) App = Test(Root) App.pack(expand='yes',fill='both') Root.geometry('640x480+10+10') Root.mainloop()

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Tkinter, threads? memory?
by Michael M Haimes Sept. 21, 2006

Sept. 21, 2006

Hello Tkinter community, I'm a relatively experienced Python/Tk programmer having worked on multiple larger scale projects now, and I'm having two issues with Tkinter: ------------1---------- Linux implementations of Python/Tkinter (the most current) seem to exhibit the problem, but not Sun/Solaris or Windows. Essentially, I can't animate objects on a canvas without leaking memory at about 1Mb/s . I've tried 4 different methods, either deleting and redrawing objects, or just moving objects, and either using Tk tags to label and operate the objects, or storing their IDs in my program and operating with them that way. I can't think of any other way to do this, and I basically need to. I would try the WCK to make my own, but the idea is to have the software run on a base install of Python. The link to the four example test scripts I wrote up is here: http://web.mit.edu/mhaimes/Public/tktest.tar ------------2---------- The Mac OS X implementation of Python seems to exhibit this problem, and no other systems. This problem is related to the above, namely, on the Mac animation seems to be totally broken. Whenever Tk is running its event loop, it stops all other python threads from processing and sits and waits for input. So my example code below runs a counter in a background thread which increments the number Tk has displayed. On Windows/Linux, it just counts up until you press exit. On the Mac, it will sit there and freeze if you aren't inputting anything, but as soon as you wave the mouse around or start typing it'll continue to increment; whereas on Windows and Linux, the counter just counts up no matter what you are inputting. I know this could be done without two separate threads, but the real program that this is modelling an issue I'm having needs Tk to be in its event loop, so that is not an option. Test code as follows: ################# import Tkinter import thread import sys app = Tkinter.Tk() text = Tkinter.StringVar() Tkinter.Label(app, textvariable = text).pack() def looper(): count = 0 while 1: text.set(`count`) count+=1 thread.start_new_thread(looper, ()) Tkinter.Button(app, text="exit", command = sys.exit).pack() app.mainloop() ############## ----------------------- If anyone has any hints or suggestions for workarounds for either of the above problems, it would be much appreciated. Or if you just run any of the test programs on your systems and get different results than I predicted for you, tell me some things about your system and what happened. -Mike Haimes

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Minimizing a Python/Tk application
by Gerardo Juarez Sept. 20, 2006

Sept. 20, 2006

Hi, I want a Python/Tk application to minimize itself as soon as it starts (it acts in the background). Is there a way to make this happen? An another question: how can I make this application appear on the tool bar, next to the volume control, anti-virus software and similar applications? I have searched and cannot find anything related. Thanks in advance, Gerardo

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Transparent messages
by Chris Niekel Sept. 15, 2006

Sept. 15, 2006

Hi, I read this article http://www.humanized.com/weblog/2006/09/11/monolog_boxes_and_transparent_me… or http://tinyurl.com/k5jed and thought it'd be nice to play with this. Does anyone have an idea how this could be done with tkinter? For those who don't want to see the article, they suggest an alternative to a messagedialog, by showing a semi-transparent widget in the window, which disappears upon user-activity. I'm not so good at tkinter yet, but I'd love to use something like this. Regards, Chris Niekel

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Transparent Background Text
by Mikkel Jans Sept. 15, 2006

Sept. 15, 2006

Hello Is it possible to make a text widget's background transparent? -- View this message in context: http://www.nabble.com/Transparent-Background-Text-tf2270154.html#a6301194 Sent from the Python - tkinter-discuss forum at Nabble.com.

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handling of item selected in the listbox
by sumanth_scl Sept. 14, 2006

Sept. 14, 2006

hello friends.... i am new to forum, and i got a problem while using tkinter GUI with python.My script performs some initial operations and calls the result ot the operation to be displayed in listbox, and depending on selection of user input, the program should again proceede with some more operations. but the variable where i stored the input given by user to listbox is unable to hold that value if the processing is not in the GUI part.... can any one suggest solution for this. i am giving the part of python program for ur understanding the problem.. #__________________________________________________________________GUI_______________________________________________________________ from Tkinter import * def whichselected() : return int(select.curselection()[0]) def loadEntry () : temp_name=Total_variants[whichselected()] print temp_name def makeWindow () : global nameVar, select win = Tk() frame1 = Frame(win) frame1.pack() Label(frame1, text="List of Variants (please select the variant to be analysed)").grid(row=0, column=0, sticky=W) frame3 = Frame(win) # select of names frame3.pack() select = Listbox(frame3, height=22, width=85) select.pack(side=LEFT) frame2 = Frame(win) frame2.pack() b1=Button(frame2,text="Enter",command=loadEntry) b1.grid(row=2, column=0, sticky=W) return win def setSelect () : #Total_variants.sort() for name in Total_variants: select.insert (END, name) def user_variant (): win = makeWindow() setSelect () print temp_name win.mainloop() #_________________________________________________________________________________________________________________________________________ The script will run and collect some variants and store them in Total_variants , which is global variable and the script will calluser_variant(). now the problem is temp_name in function loadEntry () will give the exact thing selected by the user, the print temp_name in the function user_variant() will give error , not defined. If i define it as global then the value assaigned to it will print or some junk is printed and not the user selected thing. actually i want to use temp_name in later part of the program, but i m getting the error not defined. can any one give me the solution how to handle this. -- View this message in context: http://www.nabble.com/handling-of-item-selected-in-the-listbox-tf2270206.ht… Sent from the Python - tkinter-discuss forum at Nabble.com.

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Re: [Tkinter-discuss] bwidget progressbar
by Michael Lange Sept. 14, 2006

Sept. 14, 2006

On Wed, 13 Sep 2006 15:50:47 +0300 "Ilknur Ozturk" <Ilknur.Ozturk(a)cabot.com.tr> wrote: > Thanks Michael, > > I am new in Tk() and it will good for me if I can find samples for its > usage. I found some on internet but they are very complex for me. In man > pages, the options and methods are listed but there is no basic sample > of them:( > Hi Ilknur, usually Tk man pages are quite straightforward to "translate" into Python. The standard and widget-specific options in Tk begin with "-" (like -height), in Python you can pass them to the widget constructor or to configure(), like widget.configure(height=20). The WIDGET COMMAND section describes the available commands for the widget, in case of the ProgressBar there is only cget() and configure(). So an (untested) example according to the man page might look like: from Tkinter import * import bwidget root = Tk() var = IntVar() var.set(0) p = bwidget.ProgressBar(root, height=20, width=200, maximum=100, variable=var, type='normal') p.pack() def run_test(): if var.get() < 100: var.set(var.get() + 1) root.after(50, run_test) run_test() root.mainloop() I hope this helps Michael

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bwidget progressbar
by Ilknur Ozturk Sept. 13, 2006

Sept. 13, 2006

Hi, I'm trying to use bwidget progressbar, but I could not find a page that explains its options and methods and gives some basic examples. If you know such a page, would you please send me its link? If no, can you send us some info about it? Thanks, ilknur ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. www.mimesweeper.com ********************************************************************** ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________

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How to get DIB into Tkinter frame?
by Reiner M. Stoss Sept. 4, 2006

Sept. 4, 2006

Folks, I have a problem. I have a scriptable software that works with images in FITS format (astronomical images). It can generate Windows device-independent bitmaps (DIB) and paint them as picture into any device context including Picture controls in Visual Basic, etc. Here is VB sample code that works for me: --- Private Sub Command1_Click() Set p = CreateObject("PinPoint.Plate") p.AttachFITS "M:\Images\LaSagra\20060828\012128+170000-sagra21-S001-R001.fts" Set m = p.NewPlateDIB() m.Create 1, 1, 1, 1 m.Render 60000, 0 m.PaintPicture Picture1.hDC p.DetachFITS End Sub --- The PaintPicture method sends the picture into the PictureBox Picture1. Now how to do the same in Python/Tkinter? I have something as this: --- p = win32com.client.dynamic.Dispatch('PinPoint.Plate') p.AttachFITS('M:/Images/LaSagra/20060828/012128+170000-sagra21-S001-R001.fts') m = p.NewPlateDIB() m.Create(1, 1, 1, 1) m.Render(60000, 0) m.PaintPicture(im) #Here some Tkinter lines like root = Tk() etc. def expose(event): dib = ImageWin.Dib(im) dib.expose(ImageWin.HDC(left_frame.winfo_id())) left_frame.bind("", expose) p.DetachFITS() --- But it crashes with this message: --- Traceback (most recent call last): File "L:\pin.py", line 91, in ? m.PaintPicture(im) NameError: name 'im' is not defined --- Clearly the problem is the argument I provide when I call PaintPicture(). So how to get the picture painted by PaintPicture() into a Tkinter frame? Thanks, Reiner

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