Tkinter Radiobutton and askfloat()

[Eric Brunel]

Jon Hsieh wrote:
> Hi,
> I created a Radiobutton:
> 
>> from Tkinter import *
>> from tkSimpleDialog import askfloat
>>
>> def callme():
>>     num = askfloat("askfloat", "float:")
>>
>> root = Tk()
>> rb = Radiobutton(root, command=callme)
> 
>  > rb.pack()
>  > root.mainloop()
> 
> When this code is run, I get the following exception:
> 
>>   File "/usr/lib/python2.2/lib-tk/tkSimpleDialog.py", line 271, in 
>> askfloat
>>     d = apply(_QueryFloat, (title, prompt), kw)
>>   File "/usr/lib/python2.2/lib-tk/tkSimpleDialog.py", line 179, in 
>> __init__
>>     Dialog.__init__(self, parent, title)
>>   File "/usr/lib/python2.2/lib-tk/tkSimpleDialog.py", line 64, in 
>> __init__
>>     self.grab_set()
>>   File "/usr/lib/python2.2/lib-tk/Tkinter.py", line 493, in grab_set
>>     self.tk.call('grab', 'set', self._w)
>> TclError: grab failed: window not viewable

Same problem here (Python 2.1 on Mandrake 8.0). I don't know the exact status of 
the module tkSimpleDialog; is it still supported?

BTW, I'd use Pmw's PromptDialog for this kind of stuff. It's far more powerful 
than all dialogs in tkSimpleDialog. And if you're into Tkinter, you soon won't 
be able to live without Pmw ;-)

http://pmw.sourceforge.net/

HTH
-- 
- Eric Brunel <eric.brunel at pragmadev.com> -
PragmaDev : Real Time Software Development Tools - http://www.pragmadev.com