[Tkinter-discuss] Keeping keyboard focus when window iconified (Win XP) ?

[Amanjit Gill]

Hi there

ui updates with tkinter will only happen IMHO after your method returns. 
use the widget.after() method (check 
http://infohost.nmt.edu/tcc/help/pubs/tkinter/universal.html). Something 
like this:

def screenshot(event):
    fen1.iconify()
    fen1.after(200,doscreen)

i=0
def doscreen():
    global i
    print " screen !"
    i= i+1
    name = "session1picture"
    name= name + str(i)
    print name
    myscreen= ImageGrab.grab()
    myscreen.show()
    myscreen.save("C:/"+name+ '.jpeg')
    fen1.deiconify()

If you want ro remove the taskbar entry you can apply the win32 style 
MYWS_EX_NOACTIVATE (at least with win2000 or later). This requires C 
programming, and is just the first thing that came into my mind.

cheers
Amanjit Singh Gill

>Hello,
>
>I'm doing a small program to capture screenshots.
>
>But obviously I don't wan my GUI to be visible during the sreenshots and I
>want to continue to take sreenshots (with my key binding) even when the
>program doesn't have the main focus anymore.
>
>I'm running Python 2.4 on Win XP Family.
>
>Do you have an idea how I could do this ?
>
>Thanks in advance
>
>francois
>
>---
>import sys, os, msvcrt, Image, ImageGrab
>from Tkinter import *
>from os import chdir
>
>def exitapp():
>    fen1.quit()
>    fen1.destroy()
>
>i=0
>def screenshot(event):
>    fen1.iconify()
>    global i
>    print " screen !"
>    i= i+1
>    name = "session1picture"
>    name= name + str(i)
>    print name
>    myscreen= ImageGrab.grab()
>    myscreen.show()
>    myscreen.save("C:/"+name+ '.jpeg')
>    fen1.deiconify()
>
>def invisible():
>    fen1.iconify()
>
>#GUI launch
>fen1=Tk()
>fen1.title("Screenshots Tests")
>bu11=Button(fen1, text='screenshot')
>fen1.bind("s",screenshot)
>#fen1.bind_all("s",screenshot)
>bu11.bind("<Button-1>",screenshot)
>buQuit=Button(fen1, width= 20, text='Quitter',command=exitapp)
>bu12=Button(fen1, text='invisible', command=invisible)
>
>bu11.pack()
>bu12.pack()
>buQuit.pack()
>
>fen1.mainloop()
>
>
>
>------------------------------------------------------------------------
>
>_______________________________________________
>Tkinter-discuss mailing list
>Tkinter-discuss at python.org
>http://mail.python.org/mailman/listinfo/tkinter-discuss
>