Mailman 3 November 2010 - Tkinter-discuss

Control position of Tkinter common dialogs?
by python＠bdurham.com Dec. 9, 2016

Dec. 9, 2016

Python 2.7 under Windows: How can we control the position of Tkinter's common dialogs? Here's what we've discovered: * Certain common dialogs always open up relative to their parent window * Certain common dialogs always open up centered on the user's desktop * All common dialogs appear to ignore the optional parent= parameter Questions: * How can we force a dialog to open up relative to its parent window? * How can we force a dialog to open up centered on the user's desktop? Background: import tkColorChooser as colorchooser import tkFileDialog as filedialog import tkMessageBox as messagebox # always open up relative to parent windows fileOpen = filedialog.askopenfilename() fileOpens = filedialog.askopenfilenames() fileSaveAs = filedialog.asksaveasfilename() color = colorchooser.askcolor() # always open up centered on desktop folderOpen = filedialog.askdirectory() messagebox.askquestion() Malcolm

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how make active python 3 use active tcl on mac os?
by David Cortesi Dec. 10, 2010

Dec. 10, 2010

I apologize that this question is somewhat unique to the ActiveState free products, not the generic Python. I asked the question at the ActiveState support forum but it appears to be dead. I installed ActiveState Python 3.1.4, and also ActiveState Tcl/Tk, both on Mac OS X 10.6. Python3 executing "import * from tkinter" is getting and executing the Apple version of Tcl/Tk which is level 8.5.7. It appears to be getting it from /System/Library/Frameworks/Tk.framework and Tcl.framework. The ActiveTc (level 8.5.9) is in /Library/Frameworks rather than /System/Library Frameworks. It contains a bug fix that I need. Any suggestions on how I tell python3 to find the later Tcl/Tk instead of the Apple one? Also just by the way, how in program code can you check the release level of Tk or ttk? Thanks, Dave Cortesi

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Tkinter support different styles of underlining?
by python＠bdurham.com Nov. 30, 2010

Nov. 30, 2010

Does Tkinter (directly of via tk/tcl) support different styles of underlining, eg. dotted underlines or squiggly underlines (typically used to indicate a word is misspelled in MS Word or FireFox)? Thank you, Malcolm

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Possible to create equivalent of named font objects for colors?
by python＠bdurham.com Nov. 30, 2010

Nov. 30, 2010

Tkinter has a cool way to create named font objects that can be used across widgets. When a named font object is updated, all the widgets that use the named font automatically update their fonts as well. Is there a similar way to implement "named colors", eg. where we can update a "color object" in one place and have all widgets that reference this color object update their colors as well? Thank you, Malcolm

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Re: [Tkinter-discuss] simple scrollbar... not so simple
by Sorin Schwimmer Nov. 26, 2010

Nov. 26, 2010

Mick, you saved me! My test code looks now like this (I hope HTML tags are honoured): from Tkinter import * r=Tk() tx=Text(r,width=6) # hosts the frames and allows scrollbar sb=Scrollbar(r,command=tx.yview) tx['yscrollcommand']=sb.set f=Frame(tx) # hosts my stuff <b>tx.window_create(END,window=f)</b> tx.grid() sb.grid(row=0,column=1,sticky=NS) for i in range(50): Label(f,text=('line #%d' % i)).grid() r.mainloop() Instead of "grid" for the frame, I used a "window_create", as per your example, and ta-da! it works. The Text width is an arbitrary 6, I don't know how to make it as large as the frame, but not larger, and I also don't know how to show the scroll bar only when needed. But I can live with these two minor shortcomings, and the real application behaves fine. Thank you SxN

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Re: [Tkinter-discuss] simple scrollbar... not so simple
by Sorin Schwimmer Nov. 25, 2010

Nov. 25, 2010

Mick, you're right, Tkinter frames are not scrollable. That's why I'm nesting my frame into a Text widget... and am not getting anywhere :-( SxN

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simple scrollbar... not so simple
by Sorin Schwimmer Nov. 24, 2010

Nov. 24, 2010

Hi all, I have a list of checkboxes and label/entry pairs which I'd like to have in a scrollable widget. So I built something like this (in this example I put just labels): from Tkinter import * r=Tk() tx=Text(r) # hosts the frames and allows scrollbar sb=Scrollbar(r,command=tx.yview) tx['yscrollcommand']=sb.set f=Frame(tx) # hosts my stuff f.grid() tx.grid() sb.grid(row=0,column=1,sticky=NS) for i in range(50): Label(f,text=('line #%d' % i)).grid() r.mainloop() The scrollbar appears, but is inactive (grayed out), and has no slider. What am I missing? Thanks, SxN

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Change the font style (bold, italic, stikethru, normal) of widgets without explictly knowing font?
by python＠bdurham.com Nov. 23, 2010

Nov. 23, 2010

Is there a simple way to change the font style of widgets without explictly knowing the widget's font? For example: if I want to toggle the bold state of a widget's text, do I need to determine its font, then build an equivalent font object/expression with the font style I need, and pass that full font description to widget.config() or can I use a shortcut technique that allows me to pass 'bold' or 'normal' to control a widget's font. Thank you, Malcolm

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Working with tear-off menus (change the "-----" label, customize location/appearance of tear-off window)
by python＠bdurham.com Nov. 22, 2010

Nov. 22, 2010

I've been experimenting with Tkinter tear-off menus and have the following questions (relative to Windows): 1. Is there a way to change the default appearance of the "------" menu label that is used to indicate a tear-off menu -OR- is there a way to programmatically convert a menu widget to a torn-off state? Note: The tear-off menu item does not have a 'label' property. 2. Is there a way to customize the location and appearance of the window that contains a tear-off menu? On Windows, the tear-off menus appear at random(?) places on the desktop. And these windows have min/max buttons and are resizable - all behaviors that IMO don't make sense for a floating tear-off menu. What I would like to do is capture a reference to the window of a tear-off and customize it like I would any other Toplevel() window. Is this possible? Note: I can detect the tearoff event by using the tearoffcommand= option when I create a menu. I think this event is where I want to take control of the tear-off menu's window properties? But how to get a reference to the tear-off menu's window (and does it exist yet?). Thank you, Malcolm

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Bind to event related to currently selected menu item
by python＠bdurham.com Nov. 21, 2010

Nov. 21, 2010

Wondering if there's a menu event I can bind to that's related to the currently selected menu item? By menu item I mean the items that show up in a popup menu like New, Open, Save, etc. Use case: I would like to update a statusbar area of our application with a description of the currently selected menu item. Malcolm

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