Mailman 3 May 2014 - 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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Transient, grab and focus problems...
by Vasilis Vlachoudis May 20, 2014

May 20, 2014

Dear all in my application I have some toplevels that appear as InPlaceEdit for Listboxes when the user clicks a field in a listbox. This time I've tried to create a 2 nested level toplevel, but I am completely losing the focus on the return and I didn't find any way to restore it. Bellow there is a small example just to demonstrate the problem By clicking the button it opens a toplevel, transient, overrideredirect(1) with a Text() which has the grab and the focus. Once you press a certain key (now the +) it opens a second level, another toplevel of a listbox with override and grab On return from the second toplevel the focus is completly lost. I cannot restore the focus on the text, I've tried to use focus_set(), grab_set etc.. but with no success. Any ideas? Where did the focus go and how why the focus_set() doesn't work Thanks in advance Vasilis from Tkinter import * # ======================================================== class TopList(Toplevel): def __init__(self, master): Toplevel.__init__(self, master) self.overrideredirect(1) self.transient(master) self.bind("<Escape>", self.close) self.l = Listbox(self, bg="Yellow") self.l.pack() self.l.bind("<ButtonRelease-1>", self.close) for item in ["one","two","three","four"]: self.l.insert(END,item) self.result = "" # ------------------------------------------------ def show(self): self.deiconify() self.wait_visibility() self.grab_set() self.l.focus_set() self.wait_window() self.grab_release() return self.result # ------------------------------------------------ def close(self, event=None): if event: self.result = self.l.get(self.l.nearest(event.y)) else: self.result = self.l.get(ACTIVE) self.destroy() # ======================================================== class TopText(Toplevel): def __init__(self, master): Toplevel.__init__(self, master) self.overrideredirect(1) self.transient(master) self.bind("<Escape>", self.close) self.t = Text(self, bg="White") self.t.pack() self.t.bind("<Key-plus>", self.openList) self.result = "" # ------------------------------------------------ def show(self): self.deiconify() self.wait_visibility() self.grab_set() self.t.focus_set() self.wait_window() return self.result # ------------------------------------------------ def close(self, event=None): self.result = self.t.get(1.0,END) self.destroy() # ------------------------------------------------ def openList(self, event=None): self.grab_release() result = TopList(self).show() self.t.focus_set() self.grab_set() self.t.insert("%s + 1 chars"%(INSERT),result) # ======================================================== def openText(): print TopText(tk).show() tk = Tk() e = Entry(tk) e.pack() e.focus_set() b = Button(tk, text="Text", command=openText) b.pack() tk.mainloop()

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Re: [Tkinter-discuss] Different fonts in 3.3?
by Josef Eschgfaeller May 16, 2014

May 16, 2014

Ned Deily wrote: > I wouldn't be surprised to find that the 3.1 version > is linked with Tk 8.4 and 3.3 is with Tk 8.5. Yes. I find this with tkinter.Tcl().eval('info patchlevel') which gives 8.4.19 and 8.5.15. > the Apple-supplied system Tcl/Tk 8.5 I installed today Python 3.4. But some time ago I installed ActiveTcl 8.6, which in the Frameworks directory is also Current. Does this mean, that the new Python 3.4 has been installed with Apple's Tcl and not with the ActiveTcl version? Thanks Josef Eschgfaeller

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How to enable/disable a menu?
by Alan Gauld May 14, 2014

May 14, 2014

I have an app with a tabbed notebook. I want to only enable one of the main menus when the appropriate tab is selected. When the tab is deselected I want to disable the menu again. I can't see any obvious properties in the Menu object. I can mess around with flags in the event handlers and change the menu font colours etc but that's pretty horrible. Is there anything better? Using Python 3.3; on Linux and Windows 8 if it makes any difference. TIA -- Alan G Author of the Learn to Program web site http://www.alan-g.me.uk/ http://www.flickr.com/photos/alangauldphotos

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Different fonts in 3.3?
by Josef Eschgfaeller May 10, 2014

May 10, 2014

Trying to pass from Python 3.1 to 3.3 I have a problem with Tkinter: fonts (or spacings) in 3.3 seem to be higher, so that after instructions like A=tkinter.Text(B,width=36,height=27,...) the text widget requires more space than before with 3.1. I have Mac OS X 10.6.8 and call Python from a script using #! /Library/Frameworks/Python.framework\ /Versions/3.x/bin/python3 It seems also that the letters are a bit uglier, somewhat more compressed. Thanks Josef Eschgfaeller

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