[issue11387] Tkinter, callback functions
Serhiy Storchaka added the comment:
This is not Tkinter bug, this is normal Tk behavior. Here is minimal reproducer
on Tcl/Tk :
button .b -text Click me
bind .b Button-1 {tk_messageBox -message The button is sunken!}
pack .b
I suppose the button is left sunken because the message box steals a focus.
In general binding mouse click event for button is not a good idea, because it
makes a button non-usable with keyboard. Use the command option.
--
nosy: +serhiy.storchaka
resolution: - not a bug
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[issue11387] Tkinter, callback functions
Changes by Terry J. Reedy tjre...@udel.edu: -- stage: - resolved status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11387 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11387] Tkinter, callback functions
Nikolay Fomichev morphsa...@gmail.com added the comment:
Here it is...
import sys
if sys.version_info[0] == 3:
import tkinter as tk
from tkinter import messagebox
from tkinter import filedialog
else:
import Tkinter as tk
import tkMessageBox as messagebox
import tkFileDialog as filedialog
class App():
def __init__(self):
self.root = tk.Tk()
self.btnMsg = tk.Button(self.root, text='Click me')
self.btnMsg.pack()
self.btnMsg.bind('Button-1', self.clickMsg)
self.btnFd = tk.Button(self.root, text='Click me too')
self.btnFd.pack()
self.btnFd.bind('Button-1', self.clickFd)
self.btnCommand = tk.Button(self.root, text='And now click me')
self.btnCommand.pack()
self.btnCommand.config(command=self.clickCommand)
self.root.mainloop()
def clickMsg(self, event):
messagebox.showerror(title='Error!', message='The button is sunken!')
def clickFd(self, event):
filedialog.askdirectory(title='Choose a directory')
def clickCommand(self):
messagebox.showinfo(title='Success!', message='The button is raised.')
App()
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[issue11387] Tkinter, callback functions
Guilherme Polo ggp...@gmail.com added the comment:
I have a different problem here on Mac, but I can manage to reproduce
your issue if I apply the following patch:
Index: Lib/tkinter/__init__.py
===
--- Lib/tkinter/__init__.py (revision 88757)
+++ Lib/tkinter/__init__.py (working copy)
@@ -920,9 +920,9 @@
self.tk.call('bindtags', self._w, tagList)
def _bind(self, what, sequence, func, add, needcleanup=1):
Internal function.
-if isinstance(func, str):
-self.tk.call(what + (sequence, func))
-elif func:
+#if isinstance(func, str):
+#self.tk.call(what + (sequence, func))
+if func:
funcid = self._register(func, self._substitute,
needcleanup)
cmd = ('%sif {[%s %s] == break} break\n'
This should help someone else to produce a patch for this problem you
reported. It is interesting that this same patch fixes the problem I
have here (I get a SIGSEGV if I click the cancel button side the
askdirectory dialog).
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[issue11387] Tkinter, callback functions
Terry J. Reedy tjre...@udel.edu added the comment: In 2.7 or 3.2, winxp, when I enclose your code with from tkinter import tk #or Tkinter ... App() I get a window with a buttom that sinks and raises as I press and release the left button. Please post complete runnable code that exhibits the problem. Do not expect us to replace what you deleted. -- nosy: +gpolo, terry.reedy versions: +Python 3.3 -Python 2.6 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11387 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11387] Tkinter, callback functions
New submission from Nikolay Fomichev morphsa...@gmail.com:
A simple code:
class App():
def __init__(self):
self.root = tk.Tk()
self.btn = tk.Button(self.root, text='Click me')
self.btn.pack()
self.btn.bind('Button-1', self.click)
self.root.mainloop()
def click(self, event):
# Messagebox or filedialog
pass
When the button is clicked, it calls the function where a filedialog or
messagebox is called. After the function is done the button changes - it looks
like it's pressed. Its relief is sunken. Something like
self.btn.config(relief=tk.RAISED) has no effect - relief is raised, but the
button still looks pressed.
If no dialogs are called, all is fine.
But... if instead of bind I use config option command, it works - the
function goes well with dialogs, etc and the button is really raised.
I checked this in 2.6.6, 2.7, 3.1.2 and 3.2 on Linux and Win, everywhere is the
same tune.
--
components: Tkinter
messages: 129990
nosy: Nikolay.Fomichev
priority: normal
severity: normal
status: open
title: Tkinter, callback functions
versions: Python 2.6, Python 2.7, Python 3.1, Python 3.2
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