Mailman 3 August 2011 - 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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ttk.Notebook - how to bind to tab events (tab caption has focus or mouseover)
by python＠bdurham.com May 9, 2012

May 9, 2012

I'm using the ttk.Notebook widget. What object do I bind to capture events related to specific tabs? I would like to trap when a tab caption gets keyboard focus ('<FocusIn>') and when the mouse pointer is over a specific tab caption ('<Enter>'). I can trap mouse clicks on tabs (<Button-1>, <Button-3>), but I can't find a way to determine what tab a user clicked on in the case of a right click. Thank you, Malcolm

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one pixel=how many mm?
by 守株待兔 Sept. 1, 2011

Sept. 1, 2011

in tkinter ,you can express width in cm ,mm,inch,,pixel i want to know: one pixel=how many mm?

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strange grid-layout manager behaviour
by GKalman Aug. 28, 2011

Aug. 28, 2011

I'm just "switching" from the pack-layout manager to the grid-layout manager. I'm trying to understand why Button b3 is NOT centered like the other two buttons (b1 & b2). See my "mini-script" below. What am I doing wrong? ******************************************* from Tkinter import * #================================================= class Example: def __init__(self, parent): self.parent = parent self.parent.geometry("+400+100") frm1=Frame(self.parent,bg="cyan") frm1.columnconfigure(0,minsize=200) frm1.grid(row=0,column=0) frm3=Frame(self.parent,bg="orange") frm3.columnconfigure(1,minsize=200) frm3.grid(row=0,column=1) frm2=Frame(self.parent,bg="yellow") frm2.columnconfigure(0,minsize=400) frm2.grid(row=1,column=0,columnspan=2) b1=Button(frm1,text="1",bg="green") b1.grid(in_=frm1,row=0,column=0) b3=Button(frm3,text="3",bg="green") b3.grid(in_=frm3,row=0,column=0) b2=Button(frm2,text="2",bg="green") b2.grid(in_=frm2,row=0,column=0) self.parent.grid() #===================================================== def main(): root = Tk() app = Example(root) root.mainloop() #=================================================== if __name__ == '__main__': main() -- View this message in context: http://old.nabble.com/strange-grid-layout-manager-behaviour-tp32352525p3235… Sent from the Python - tkinter-discuss mailing list archive at Nabble.com.

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回复： one pixel=how many mm?
by 守株待兔 Aug. 28, 2011

Aug. 28, 2011

in my computer: xrandr Screen 0: minimum 320 x 200, current 1280 x 800, maximum 8192 x 8192 LVDS1 connected 1280x800+0+0 (normal left inverted right x axis y axis) 331mm x 207mm >>> import Tkinter >>> root=Tkinter.Tk() >>> k=root.winfo_fpixels('1m') >>> print k 3.78698224852 >>> print 1280/k 338.0 why it's 338 ,not 331mm?? ------------------ 原始邮件 ------------------ 发件人: "Martin B"<spooky.ln(a)tbs-software.com>; 发送时间: 2011年8月28日(星期天) 下午2:37 收件人: "tkinter-discuss"<tkinter-discuss(a)python.org>; 主题: Re: [Tkinter-discuss] one pixel=how many mm? V Sun, 28 Aug 2011 10:10:30 +0800 "守株待兔" <1248283536(a)qq.com> napsáno: > in tkinter ,you can express width in cm ,mm,inch,,pixel > i want to know: > one pixel=how many mm? pixels per mm = root.winfo_fpixels('1m') pixels per point = root.winfo_fpixels('1p') pixels per inch = root.winfo_fpixels('1i') pixels per cm = root.winfo_fpixels('1c') _______________________________________________ Tkinter-discuss mailing list Tkinter-discuss(a)python.org http://mail.python.org/mailman/listinfo/tkinter-discuss

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Editing text in Canvas
by Martin B Aug. 27, 2011

Aug. 27, 2011

Hi all, I'm write some custom widgets for my app. Now i write custom Scale widget like in Gimp2.7. Here is the code: http://www.tbs-software.com/spookyln/py/Tk_Scale.py but i need some kick how to make it editable.When i click to Canvas focus set to editable entry.First value ok and next is error that focus not set in item :( BTW: is possible make gradient fill in Canvas.create_rectangle() ? thanks for info

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strange partial function aciton
by 守株待兔 Aug. 26, 2011

Aug. 26, 2011

code1 ok from Tkinter import * from functools import partial fields = 'Name', 'Job', 'Pay' def fetch(entries,event): for entry in entries: print 'Input => "%s"' % entry.get() print event def makeform(root, fields): entries = [] for field in fields: row = Frame(root) lab = Label(row, width=5, text=field) ent = Entry(row) row.pack(side=TOP, fill=X) lab.pack(side=LEFT) ent.pack(side=RIGHT, expand=YES, fill=X) entries.append(ent) return entries if __name__ == '__main__': root = Tk() ents = makeform(root, fields) root.bind('<Return>', partial(fetch,ents)) root.mainloop() code2 fail i don't understand why ? from Tkinter import * from functools import partial fields = 'Name', 'Job', 'Pay' def fetch(entries,event): for entry in entries: print 'Input => "%s"' % entry.get() print event def makeform(root, fields): entries = [] for field in fields: row = Frame(root) lab = Label(row, width=5, text=field) ent = Entry(row) row.pack(side=TOP, fill=X) lab.pack(side=LEFT) ent.pack(side=RIGHT, expand=YES, fill=X) entries.append(ent) return entries if __name__ == '__main__': root = Tk() ents = makeform(root, fields) root.bind('<Return>', partial(fetch,entries=ents)) root.mainloop() code3: fail i know the reason from Tkinter import * from functools import partial fields = 'Name', 'Job', 'Pay' def fetch(event,entries): for entry in entries: print 'Input => "%s"' % entry.get() print event def makeform(root, fields): entries = [] for field in fields: row = Frame(root) lab = Label(row, width=5, text=field) ent = Entry(row) row.pack(side=TOP, fill=X) lab.pack(side=LEFT) ent.pack(side=RIGHT, expand=YES, fill=X) entries.append(ent) return entries if __name__ == '__main__': root = Tk() ents = makeform(root, fields) root.bind('<Return>', partial(fetch,ents)) root.mainloop() code4: ok from Tkinter import * from functools import partial fields = 'Name', 'Job', 'Pay' def fetch(event,entries): for entry in entries: print 'Input => "%s"' % entry.get() print event def makeform(root, fields): entries = [] for field in fields: row = Frame(root) lab = Label(row, width=5, text=field) ent = Entry(row) row.pack(side=TOP, fill=X) lab.pack(side=LEFT) ent.pack(side=RIGHT, expand=YES, fill=X) entries.append(ent) return entries if __name__ == '__main__': root = Tk() ents = makeform(root, fields) root.bind('<Return>', partial(fetch,entries=ents)) root.mainloop() there are four codes,code1,code4 it's ok,i know why; code2,code3,it's not ok,i understand why code2 can't work, would you mind to tell me why code3 can't work?? the output is: Exception in Tkinter callback Traceback (most recent call last): File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 1413, in __call__ return self.func(*args) TypeError: fetch() got multiple values for keyword argument 'entries' i don't understand it.

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event :use command to replace bind
by 守株待兔 Aug. 25, 2011

Aug. 25, 2011

here is my code ,it can run ,i want to make it simpler, to change three sentences to one, xb =Button(root, text='Fetch') xb.pack(side=LEFT) xb.bind("<Button-1>", partial(fetch, entries=ents)) i write: Button(root, text='Fetch',command=partial(fetch, entries=ents)).pack(side=LEFT) that is to change code1 into code2 ,when you click the button"fetch",the output is : TypeError: fetch() takes exactly 2 arguments (1 given) how to revise it? code1:(it's ok) from Tkinter import * from functools import partial fields = 'Name', 'Job', 'Pay' def fetch(event, entries): for entry in entries: print 'Input => "%s"' % entry.get() print event.widget def makeform(root, fields): entries = [] for field in fields: row = Frame(root) lab = Label(row, width=5, text=field) ent = Entry(row) row.pack(side=TOP, fill=X) lab.pack(side=LEFT) ent.pack(side=RIGHT, expand=YES, fill=X) entries.append(ent) return entries if __name__ == '__main__': root = Tk() ents = makeform(root, fields) root.bind('<Return>', partial(fetch, entries=ents)) xb =Button(root, text='Fetch') xb.pack(side=LEFT) xb.bind("<Button-1>", partial(fetch, entries=ents)) root.mainloop() code2: from Tkinter import * from functools import partial fields = 'Name', 'Job', 'Pay' def fetch(event, entries): for entry in entries: print 'Input => "%s"' % entry.get() print event.widget def makeform(root, fields): entries = [] for field in fields: row = Frame(root) lab = Label(row, width=5, text=field) ent = Entry(row) row.pack(side=TOP, fill=X) lab.pack(side=LEFT) ent.pack(side=RIGHT, expand=YES, fill=X) entries.append(ent) return entries if __name__ == '__main__': root = Tk() ents = makeform(root, fields) root.bind('<Return>', partial(fetch, entries=ents)) Button(root, text='Fetch',command=partial(fetch, entries=ents)).pack(side=LEFT) root.mainloop()

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can't set height in entry?
by 守株待兔 Aug. 24, 2011

Aug. 24, 2011

when i run: from Tkinter import * root = Tk() Entry(root,text = 'input your text here',width = 100,height=20).pack() root.mainloop() tkinter.TclError: unknown option "-height" can i have a higher entry?

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Re: [Tkinter-discuss] the difference between mainloop and app.mainloop and root.mainloop?
by Michael Lange Aug. 24, 2011

Aug. 24, 2011

Thus spoketh Steve Oldner <Steven.Oldner(a)LA.GOV> unto us on Wed, 24 Aug 2011 06:47:51 -0500: > So all three can be used, but which would be the more 'pythonic' way? How would I dare to decide this ;) ? If we look at the relevant parts of the IDLE code we find the following, and if they do it this way I guess that at least it can't be bad ;) def main(): (...lots of code...) # start editor and/or shell windows: root = Tk(className="Idle") fixwordbreaks(root) root.withdraw() (...some more lots of code...) root.mainloop() root.destroy() if __name__ == "__main__": sys.modules['PyShell'] = sys.modules['__main__'] main() Regards Michael .-.. .. ...- . .-.. --- -. --. .- -. -.. .--. .-. --- ... .--. . .-. Suffocating together ... would create heroic camaraderie. -- Khan Noonian Singh, "Space Seed", stardate 3142.8

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