disabling button

[devnew@gmail.com]

using tkinter i created a gui and put a button on the frame

class mygui:
def __init__(self, parent):
...
self.okButton = Button(self.btn Frame)
self.okButton.c onfigure(width= somewdth,text=" OK",

anchor=W,disabl edforeground="t an")
self.okButton.b ind("<Button-1>",self.button 1Click)

then in the buttonClick(sel f,event) i want to disable it till some
time consuming calculations are completed ..then i enable it

def button1Click(se lf, event):
self.okButton.c onfigure(state= DISABLED)
print "ok disabled"
somebigcalculat ions()
self.okButton.c onfigure(state= NORMAL)
print "ok enabled"

well,the button doesn't grey out when i click it ,though the print
staements are executed..
but if some error happens and program exits with some ioerror(say
errno2 file not found ..)then the button is shown as greyed out..

am i missing something here ? how can i get the button disabled and
greyed out on clicking it?

dn

[Fredrik Lundh]

Re: disabling button

devnew@gmail.co m wrote:

then in the buttonClick(sel f,event) i want to disable it till some
time consuming calculations are completed ..then i enable it
>
def button1Click(se lf, event):
self.okButton.c onfigure(state= DISABLED)

+ self.okButton.u pdate_idletasks ()

print "ok disabled"
somebigcalculat ions()
self.okButton.c onfigure(state= NORMAL)
print "ok enabled"
>
well,the button doesn't grey out when i click it ,though the print
staements are executed..
but if some error happens and program exits with some ioerror(say
errno2 file not found ..)then the button is shown as greyed out..
>
am i missing something here ? how can i get the button disabled and
greyed out on clicking it?

when Tkinter needs to redraw things, it adds the redraw action to an
internal "task" queue. tasks in this queue are usually handled by the
main event loop, but that loop doesn't run when you do your big
calculations. an explicit call to "update_idletas ks" will clear out the
task queue for you.

</F>

[devnew@gmail.com]

Re: disabling button

an explicit call to "update_idletas ks" will clear out the

task queue for you.
</F>

it worked
Thanks F.L!!
dn

[damonjulian@yahoo.com]

Re: disabling button



if you disable the button it can still respond to clicks? it only
greys out.. or is there a problem with my code here?

class MyApp:
def __init__(self,p arent):
self.mainframe= Frame(parent)
self.mainframe. pack()


self.button1=Bu tton(self.mainf rame,bg="green" )
self.button1.co nfigure(text="1 ")
self.button1.pa ck(side=LEFT)
self.button1.bi nd("<Button-1>",self.button Click1)
self.button2=Bu tton(self.mainf rame,bg="yellow ")
self.button2.co nfigure(text="2 ")
self.button2.pa ck(side=LEFT)
self.button2.bi nd("<Button-1>",self.button Click2)
self.button3=Bu tton(self.mainf rame,bg="red")
self.button3.co nfigure(text="3 ")
self.button3.pa ck(side=RIGHT)
self.button3.bi nd("<Button-1>",self.button Click3)

def buttonClick1(se lf,event):
print "ok clicked"
self.button2.co nfigure(state=D ISABLED)
self.button2.up date_idletasks( )

def buttonClick2(se lf,event):
print "2 clicked"

def buttonClick3(se lf,event):
print "3 clicked"
self.button2.co nfigure(state=N ORMAL)
#self.button2.u pdate_idletasks ()



root = Tk()
myapp = MyApp(root)
root.mainloop()


here when u click button 1 ,the button2 greys out but can still
respond to clicks..is there a way to truly disable it?

damon