Mailman 3 September 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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Unicode on Mac (yet again)
by Fred Mailhot Oct. 9, 2008

Oct. 9, 2008

Greetings, I've followed some of the discussion on the list concerning the problem of getting some Unicode characters to display properly. As suggested in a few messages, I've recompiled my python to link to Tcl/Tk8.5. I know this has succeeded, as running Tkinter._test() pops up a dialog confirming that I'm using 8.5. Unfortunately, there still seem to be problems displaying Unicode characters properly. The following snippet demonstrates (disclaimer: I'm not a Tkinter guru by any means)... import Tkinter root = Tkinter.Tk() w1 = Tkinter.Button(root, text=u"\u026E", font=("Lucida Grande",24)) w2 = Tkinter.Label(root, text=u"\u026E", font=("Lucida Grande",24)) w1.pack() w2.pack The Button displays the correct character (a digraph from the International Phonetic Alphabet), whereas the Label displays what looks like a Chinese kanji character...the same problem as in 8.4. Is there something I'm doing wrong? For the record, I'm running OSX 10.4.11 on a PPC Mac. Thanks for any advice or pointers, Fred.

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Two Listbox problem
by Ralph Tindell Sept. 30, 2008

Sept. 30, 2008

I have a Tkinter app where I have two Listbox widgets in different frames with both frames in a parent frame. I want to restrict each Listbox to one selection, but be able to make a selection in each box simultaneously. But I am only able to select one entry in the two boxes, i.e., a selection in one box forces the other box to lose its selection. At least as far as the highlighting is concerned. Anyone have any advice? Ralph Tindell Here is the relevant code segment: twoBox = Frame(frame,bd=2,relief = RAISED) iframe3 = Frame(twoBox, bd=2, relief=GROOVE) listbox1 = Listbox(iframe3, width=30, height=10) for line in ['Student One','Student Two','Student Three','Student Four']: listbox1.insert(END, line) listbox1.pack(side=LEFT,fill=X, padx=5) sb1 = Scrollbar(iframe3, orient=VERTICAL, command=listbox1.yview) sb1.pack(side=LEFT, fill=Y) listbox1.configure(yscrollcommand=sb1.set) iframe3.pack(side=LEFT) iframe2 = Frame(twoBox, bd=2,relief=GROOVE) listbox2 = Listbox(iframe2, width=30, height=10) for line in ['file1','file2','file3','file4']: listbox2.insert(END, line) listbox2.pack(side=LEFT,fill=X, padx=5) sb2 = Scrollbar(iframe2, orient=VERTICAL, command=listbox2.yview) sb2.pack(side=LEFT, fill=Y) listbox2.configure(yscrollcommand=sb2.set) iframe2.pack(side=LEFT)

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Tkinter script crashes
by joshua v Sept. 26, 2008

Sept. 26, 2008

Hi, I am using Python 2.5.2 and the tkinter module that was shipped with it. I have made an application that has two Text widgets. These widgets are populated using 'insert' method. There is a scrollbar attached to these widgets which scrolls to the very end when there is any input.( using the 'see(END)'). The script, after about an hour or so of operation, crashes with the following log. File "c:\Program Files\Python2.5\lib\lib-tk\Tkinter.py", line 1403, in __call_ _ return self.func(*args) File "D:\CODE\Backup_codes\Python_code\script.py", line 70, in set Scrollbar.set(self, *args) File "c:\Program Files\Python2.5\lib\lib-tk\Tkinter.py", line 2799, in set self.tk.call((self._w, 'set') + args) TclError: bad option "1": must be activate, cget, configure, delta, fraction, ge t, identify, or set Could this be because I input too many characters simultaneously. I would appreciate any inputs you could give to debug/solve this issue. Thank you, Josh

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Problems with using mouse in IDLE under Fedora
by Michael O'Donnell Sept. 26, 2008

Sept. 26, 2008

Dear All, Sorry for being off topic, but I cannot find a better contact point for this problem, and I guess most of you use IDLE, some under Linux. I have used IDLE without problem under Windows and Mac for years, and am now working under Fedora 9.0/Gnome2.22.3, just installed IDLE via installing python-tools 2.5.1-26-fc9 IDLE works fine, except I cannot select text within any IDLE window. (I can move around using the keyboard). I can change the cursor position with a Control-click, but not with a normal click. I have seen 3 other users report this problem , but no solutions were offered. Apparently it only affects some machines/configs. Note: Desktop Effects are disabled. Any help appreciated. Mick

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Fwd: FW: Tkinter script crashes
by joshua varghese Sept. 25, 2008

Sept. 25, 2008

Hi, I am using Python 2.5.2 and the tkinter module that was shipped with it. I have made an application that has two Text widgets. These widgets are populated using 'insert' method. There is a scrollbar attached to these widgets which scrolls to the very end when there is any input.( using the 'see(END)'). The script crashes with the following log. File "c:\Program Files\Python2.5\lib\lib-tk\Tkinter.py", line 1403, in __call_ _ return self.func(*args) File "D:\CODE\Backup_codes\Python_code\script.py", line 70, in set Scrollbar.set(self, *args) File "c:\Program Files\Python2.5\lib\lib-tk\Tkinter.py", line 2799, in set self.tk.call((self._w, 'set') + args) TclError: bad option "1": must be activate, cget, configure, delta, fraction, ge t, identify, or set I would appreciate any inputs you could give to debug/solve this issue. Thank you, Josh

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Drop Down menu depicting system directory structure
by Ashish Sethi Sept. 23, 2008

Sept. 23, 2008

Hi all I am creating an application using Tkinter which requires user to input a file address (complete path). I am currently using an Entry widget for this. But I was wondering if I can use some other widget like OptionMenu to depict the entire directory and file structure on my machine so that the user can directly select any file rather than typing the entire file path. Please suggest . p.s.- I am working in unix environment

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problem to update gnuplot display using a Scale widget
by Philippe Garteiser, PhD Sept. 22, 2008

Sept. 22, 2008

Hello! I am using a Tkinter GUI to operate a C binary whose input is a float number gotten from a Scale widget, and whose output is a datafile. I would like to get gnuplot to replot the datafile each time it is overwritten (in essence have the plot refreshed by the Scale slider). To do that, I pass the function "printer(self,newval)", to the Scale's command. In the printer function, I use os.system to execute the binary, and I operate gnuplot as a special file opened by os.popen, to which I write with the chevrons print statement. import os,Tkinter,string,time class MyApp: def __init__(self, parent): self.f=os.popen("gnuplot -","w") print >>self.f,"plot \"data.dat\" with lines" print >>self.f,"reread" self.myParent=parent self.myContainer1=Frame(parent) self.myContainer1.pack() self.v=DoubleVar() self.slider1=Scale(self.myParent,from_=0,to=1,resolution=0.001,command=self.printer)#variable=self.v,command=self.printer) self.slider1.pack() def printer(self,newval): os.system("/bin/generate_data_file "+str(newval)) time.sleep(0.09) print >>self.f,"replot\n" return newval root=Tk() myapp=MyApp(root) root.mainloop() Unfortunately I don't obtain the expected result. The Tk window is there with functioning slider, the generate_data_file is executed and given the proper input value from the slider, but gnuplot is still a problem. The gnuplot window only comes up when I close the Tkinter window, and shuts down rapidly. Do you have any ideas as to what I need to fix ? Also, it would be great not to have to use the pyGnuplot.py package, as the program will have to run on minimally installed boxes (i.e. standard python, no extra modules allowed). Thanks a lot ! "It does not pay to leave a live dragon out of your calculations" - Tolkien

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(newbie) can't invoke button for twice
by dmitrey Sept. 20, 2008

Sept. 20, 2008

hi all, I have the problem: a func has been binded to a Button: RunPause = Button(root, textvariable = t, command = lambda: invokeRunPause(p)) def invokeRunPause(p): if p.state == 'init': p.state = 'running' t.set(' Pause ') p.GUI_root.update_idletasks() p.tmp_result = p.solve(*p._args, **p._kwargs) elif p.state == 'running': .... So the problem is that I can't invoke the button RunPause till my calculations (in p.solve()) will be finished. I can observe it even graphically, the button doesn't respond when it is pressed. Could anyone provide a solution? Thank you ion advance, Dmitrey. -- View this message in context: http://www.nabble.com/%28newbie%29-can%27t-invoke-button-for-twice-tp195882… Sent from the Python - tkinter-discuss mailing list archive at Nabble.com.

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need to unify several windows in one
by andrewerol Sept. 19, 2008

Sept. 19, 2008

----- Original Message ----- From: "Andrey Antonov (UCTM)" <andrio(a)uctm.edu> To: <tkinter-discuss(a)python.org> Sent: Wednesday, September 10, 2008 3:38 PM Subject: help: need to unify several windows in one Hi All, I have an application that has 3 windows: first window is coming from Vpython (http://vpython.org/) /for example Tk-Visual.py after the installation of vpython/ second window is a console window third window from Tkinter - full with widgets. I would like to compile my application (for example with py2exe) such that: to avoid the black console window and second to redirect it's ALL output to the text widget. Because the interface of my application is a bit clumsy, I would like to unify all these 3 windows in one. I am ready to send my application if necessary for further help. Any links, examples etc. are welcome. Thx Andrew

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