Cameron Laird wrote:

On Wed, Mar 05, 2008 at 05:55:37PM +0100, Gigs_ wrote: . . .

I wrote a simple GUI with tkinter which executes a function when pressing a button. When I press the button, the function indeed executes starts running itself (it's a loop which draws a graph using gnuplot). As long as the loop is running, I can't access the GUI - it's grayed out. Only when I break the loop can I properly see the GUI back again. Is this something you're familiar with or did I define the GUI improperly?

. . .

you will need to make thread for that function to separate execution from gui

. . . Coding with threads certainly is one common approach. As the e-mail I just sent hints, it's not the only one--and sometimes not the best.

Cameron, is it possible to give a more tkinter-specific hint, i.e. in the tkinter syntax? I started reading through the link you mentioned but the syntax looks more like core Tk/Tcl. In other words, how do I make a thread (or an equivalent solution) for a function in tkinter-python? Let's say that the code looks like the following sample:
   
import Numeric, time, Gnuplot

def cooldown()
   
    A             = Numeric.arange(-1, 1, .1)
    delay         = 5
   
    ########################################
    ########################################

    X  = []
    Y  = []
    XY = []
    g  = Gnuplot.Gnuplot()
    g('set data style linespoints')
    try:       
    while A[0]<10:
        val1 = 1
        val2 = 2
        XY.append([val1, val2])
        if len(XY) > 1:
            g.plot(XY)
        except KeyboardInterrupt: # Pressing Ctrl-C will result in ending the program but saving all the data taken so far
        pass   
    return g


    win1             = Tk()
    win1.title('Control Panel')
        RunFrame               = Frame(win1, bd = 2, relief = 'groove')
    RunCooldown          = Button(RunFrame)
    RunCooldown.configure(text = 'Cooldown', fg = 'blue', command = cooldown, cursor = 'target')
    RunCooldown.pack(side = LEFT)



Thanks,

Amit.

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