[Idle-dev] IDLE getpass?

[Douglas S. Blank]

Tal,

Thanks for looking at this and giving feedback.

Unfortunately, this doesn't seem to work for me when running with
subprocesses.

Maybe it has to have to do with Tkinter running in the background thread,
and tkraise not knowing about the IDLE window in the other thread (which
is on top).

If there were a global ontop function, that would do it. I'm starting to
think that it isn't even possible in WindowsXP with IDLE with processes...

-Doug

On Thu, August 16, 2007 10:18 pm, Tal Einat said:
> On 8/16/07, Douglas S. Blank <dblank at brynmawr.edu> wrote:
>> Ok, I can't find anything to fix this. I've tried combinations of lower,
>> lift, deiconify, iconify, update, overridedirect, ... but nothing I do
>> can get a new Tk window to appear on top of IDLE.
>>
>> This is very confusing for new students (and experts). I'll do whatever
>> is necessary even it requires plugin or whatever. Can I lower IDLE?
>>
>> Any ideas?
>>
>> -Doug
>>
>> Here's some code to help anyone see the problem:
>>
>> # in IDLE on Windows XP:
>> import Tkinter
>> tl = Tkinter.Toplevel()
>> tl.update()
>> tl.raise()
>> ...
>>
>> I can't get the tl window to appear on top of IDLE.
>>
>
> Well, I ran into trouble at first too when trying to do this. In the
> end I realized that deiconify(), tkraise() and focus() need to be
> called once the Tk object's mainloop is already running. And that they
> must be called from the same thread that the mainloop is running in,
> so threads must be avoided.
>
> This seems to do the trick:
>
> def raised():
>        top = Tk()
>        text = Text(top)
>        text.pack(expand=True)
>        top.after(50, top.deiconify)
>        top.after(50, top.tkraise)
>        top.after(50, text.focus)
>        top.mainloop()
>
>
> Of course, using 'after' like this is an ugly hack. If the call to
> mainloop is delayed somehow, then the window will not be raised
> (that's why I used a 50 millisecond delay). I played around with
> cleaner possibilities but ran into some difficulties... It's too late
> at night, I'll give it another look tomorrow.
>
> - Tal
>


-- 
Douglas S. Blank
Associate Professor, Bryn Mawr College
http://cs.brynmawr.edu/~dblank/
Office: 610 526 6501