Mailman 3 March 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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How to catch when the root window closes?
by inhahe April 11, 2008

April 11, 2008

I tried doing root.bind("<Destroy>",onquit) but i don't get why onquit is called *18* times when I exit the app. what's the ideal way to execute something *once* when the app is exited? Thanks, inhahe

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New Full Tkinter document editor widget -- suggestions, comments, etc.
by Ron Provost April 1, 2008

April 1, 2008

I've posted a demo (http://tkinter.unpy.net/wiki/StyledEditor). This demo creates a widget with full "styled editing" capabilities; sort of a mini-word processor. It runs "as is" on my WinXP machine with Python 2.5. The demo allows styling of any selected text via toolbars; just select the text, then select the styling. Also included are buttons to save and retrieve all content and styling information (works for the small tests I've tried myself, not guaranteed bug-free). The actual widget wraps the Text widget to give greater freedom in the assignment of any single styling attribute to any region. This differs from the Text widget itself in that the Text widget does not allow you to individually assign a family, size, weight or slant with tag_config(). That is, for example, you can't simply apply 'bold' to some region of text. This demo was written quite quickly (I pounded it out over the weekend) so I'm sure it's full of bugs. Also in my desire to get something working quickly its API doesn't really work like a normal widget, so I guess this serves as more of a proof of concept than full-blown widget but the basic functionality is there. I'm presenting it here because I thought maybe others might have thoughts on how to improve it. API Notes: applyStyleAttribute( index1, index2, attributeName, attributeValue ) This method is is frontend to the business. attributeName and attributeValue may be any option accpeted by tag_config() of the Text widget along with appropriate value. There are also some ''new'' options: - 'family', attributeValue is a font family name - 'size', attributeValue is a font point size - 'weight', attributeValue is one of: 'normal', 'bold' - 'bold', attributeValue is a boolean (alternative to using 'weight') - 'slant', attributeValue is one of: 'roman', 'italic' - 'italic', attributeValue is boolean (alternative to using 'slant') Several previously existing options have some new values: 'spacing1', 'spacing2' and 'spacing3' may take 'None', 'Half Line', 'One Line' or 'Two Lines' in addition to any of the values acceptable by tag_config(). 'offset' may take 'normal', 'superscript' or 'subscript' in addition to any value acceptable by tag_config. Please download and try-out my demo (http://tkinter.unpy.net/wiki/StyledEditor). I'm anxious for suggestions and comments. Ron Longo

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tkinter coordinates, conversion
by Ron Provost March 30, 2008

March 30, 2008

Is there any way in tkinter to convert between coordinate systems? Specifically, I'm refering to the canvas. I'm getting x and y's back in mouse events and I would like to convert them back to inches 'i', centemeters 'c', millimeters 'm' or points 'p'. Which I wish to use to provided information back to the user. Thanks, Ron

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How to use color in the canvas?
by chenguang Zhang March 30, 2008

March 30, 2008

Today I came across a problem when using tkinter for GUI programming. Question 1.How to use the canvas.item_configure() method, for example, if I want to change a line's color from red to blue, how to arrange the parameters? Question 2.Tkinter has a tkColorChooser and its return value is something like ((0, 255, 255), '#00ffff'), and I'm wondering how to use it. Normally the color used in function (like mycanvas.create_line(ax,ay,bx,by,fill=color)) is in words such as 'red' or 'gray', how could I make the program recognize the numbers? Question 3. Suppose there are several separate lines in my canvas, all are created in one single function like 'createThings()'. What should I do so that when I choose a color from the tkColorChoose, all of them change their colors, like all change from red to ((0, 255, 255), '#00ffff')? It seems I can place a color parameter in the function createThings() and any functions inside it(create_line, create_oval and so on) take this parameter as the color to fill, but how to change the color parameter then? How can it be accessed and modified by other function(something like ChangeColor)?You don't need to answer this step be step, just some tips for the essentials would be enough. Any help would be appreciated!

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modal windows?
by inhahe March 30, 2008

March 30, 2008

How do I create modal windows in Tkinter?

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Catching clicks on the Maxinise button on MacOSX
by Michael O'Donnell March 27, 2008

March 27, 2008

Dear all, Under MacOSX/TKinter, clicking on the "Maximise Button" in the titlebar does not maximise the window. Does anyone know how to catch this event, under windows, so that I can run my own window resizing routine? Mick

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Code to dump widget info
by Jim Kleckner March 25, 2008

March 25, 2008

I'm posting this code snippet for others who might want a cheap way to see into the widget methods/attributes/configure options. Cheers - Jim import Tkinter allWidgets = { "Wm": Tkinter.Wm, "Tk": Tkinter.Tk, "Event": Tkinter.Event, "Variable": Tkinter.Variable, "StringVar": Tkinter.StringVar, "IntVar": Tkinter.IntVar, "DoubleVar": Tkinter.DoubleVar, "BooleanVar": Tkinter.BooleanVar, "Misc": Tkinter.Misc, "CallWrapper": Tkinter.CallWrapper, "Pack": Tkinter.Pack, "Place": Tkinter.Place, "Grid": Tkinter.Grid, "BaseWidget": Tkinter.BaseWidget, "Widget": Tkinter.Widget, "Toplevel": Tkinter.Toplevel, "Button": Tkinter.Button, "Canvas": Tkinter.Canvas, "Checkbutton": Tkinter.Checkbutton, "Entry": Tkinter.Entry, "Frame": Tkinter.Frame, "Label": Tkinter.Label, "Listbox": Tkinter.Listbox, "Menu": Tkinter.Menu, "Menubutton": Tkinter.Menubutton, "Message": Tkinter.Message, "Radiobutton": Tkinter.Radiobutton, "Scale": Tkinter.Scale, "Scrollbar": Tkinter.Scrollbar, "Text": Tkinter.Text, "_setit": Tkinter._setit, "OptionMenu": Tkinter.OptionMenu, "Image": Tkinter.Image, "PhotoImage": Tkinter.PhotoImage, "BitmapImage": Tkinter.BitmapImage, "Spinbox": Tkinter.Spinbox, "LabelFrame": Tkinter.LabelFrame, "PanedWindow": Tkinter.PanedWindow, "Studbutton": Tkinter.Studbutton, "Tributton": Tkinter.Tributton, } someWidgets = { "Button": Tkinter.Button, "Canvas": Tkinter.Canvas, "Checkbutton": Tkinter.Checkbutton, "Entry": Tkinter.Entry, "Label": Tkinter.Label, "Listbox": Tkinter.Listbox, "Menu": Tkinter.Menu, "Menubutton": Tkinter.Menubutton, "Message": Tkinter.Message, "Radiobutton": Tkinter.Radiobutton, "Scrollbar": Tkinter.Scrollbar, "Text": Tkinter.Text, "Spinbox": Tkinter.Spinbox, "LabelFrame": Tkinter.LabelFrame, "PanedWindow": Tkinter.PanedWindow, } if __name__ == '__main__': kl = allWidgets.keys() kl.sort() for k in kl: print "%s:" % k instance = allWidgets[k] # options = instance.configure() options = instance.__dict__ ol = options.keys() ol.sort() for o in ol: print " %s\t%s" % (o, options[o]) #for k in []: print '\n##################\n' kl = someWidgets.keys() kl.sort() root = Tkinter.Tk() for k in kl: print "%s:" % k instance = someWidgets[k](root) options = instance.configure() # options = instance._configure() ol = options.keys() ol.sort() for o in ol: print " %s\t%s" % (o, options[o])

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Re: [Tkinter-discuss] fgstipple on Text widget
by mkieverpy＠tlink.de March 25, 2008

March 25, 2008

Hi Ron, >from Tkinter import * >root = Tk() >t = Text(root) >t.insert( END, '01234567890123456789' ) >t.tag_add( 'x', '1.4', '1.12') >t.tag_config( 'x', fgstipple='gray12' ) >t.pack( ) >root.mainloop() your code works fine for me. With 'grey12' the text is just hard to see. Retry with 'grey75'. For completeness: I'm on Linux, Python 2.4.1, tcl/tk 8.4.6 Cheers, Matthias Kievernagel (mkiever/at/web/dot/de)

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help on event types
by inhahe March 25, 2008

March 25, 2008

I can't find a comprehensive list of tkinter event types.. http://infohost.nmt.edu/tcc/help/pubs/tkinter/event-types.html just says 'The full set of event types is rather large, but a lot of them are not commonly used. Here are most of the ones you'll need:' particularly what i want to do is have something happen when the text in a text box changes..

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