Darren Enns wrote:
Hello all!
I am slowly learning the Python language, and now I am moving into
developing GUI apps using PyGTK. I am bumbling/stumbling around with
'spinbutton'. I know how to make the spinbutton appear, but I don't
know how to *properly* return the final value for a spinbutton back to
my mainline code. Can someone provide a very simple example of:
1) A mainline creating a window and a button
2) When pushed, the button should call a module which opens another
(temporary) window to display a 'spinbutton'
3) The final value of the spinbutton when the 2nd window is closed
should return (somehow) the value back to the calling mainline
Here is the minimum that I am currently using to accomplish this (please
don't laugh!):
#!/usr/bin/env python2.5
import gtk
def get_value(widget,spin,value):
value = "%d" % spin.get_value_as_int()
print "value=",value
return
def get_spin(widget):
window = gtk.Window()
adjustment = gtk.Adjustment(0, -90, 90, 1, 1, 1)
spinbutton = gtk.SpinButton(adjustment,0,0)
value = 0
spinbutton.connect("changed",get_value,spinbutton,value)
print "the final value is: ",value
spinbutton.show()
window.add(spinbutton)
window.show()
return
def main():
window = gtk.Window(gtk.WINDOW_TOPLEVEL)
window.connect("destroy", gtk.main_quit)
window.show_all()
table = gtk.Table(2,1,False)
button = gtk.Button("Get Spin Value")
button.connect("clicked",get_spin)
table.attach(button,0,1,0,1)
table.show()
button.show()
window.add(table)
window.show_all()
gtk.main()
return
if __name__ == '__main__': main()
Dare
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Hello Dare,
Here is one way, that works. The main problem with the way you had
the code structured, is that the 'value' variable in get_spin() and
the 'value' variable in main() where two different things.
Separating the two windows into separate classes, makes it is easy to
make sure that there is only one 'value' variable. And the code
becomes easier to understand. As in the main window class it is
obvious (see print_value()) that we are refereing to the variable set
by the spin_window() class.
Hope this helps.
Neil.
#!/usr/bin/env python2.5
import gtk
value = ""
class spin_window :
value = 0
def get_value(self,widget):
self.value = "%d" % widget.get_value_as_int()
return
def __init__(self):
print "the final value is: ",value
window = gtk.Window()
adjustment = gtk.Adjustment(0, -90, 90, 1, 1, 1)
spinbutton = gtk.SpinButton(adjustment,0,0)
spinbutton.connect("changed",self.get_value)
spinbutton.show()
window.add(spinbutton)
window.show()
return
class main_window:
def print_value(self,widget):
print "window value=",self.window.value
return
def get_spin(self,widget) :
self.window = spin_window()
def __init__(self):
window = gtk.Window(gtk.WINDOW_TOPLEVEL)
window.connect("destroy", gtk.main_quit)
table = gtk.Table(2,1,False)
button = gtk.Button("Show window")
button.connect("clicked",self.get_spin)
table.attach(button,0,1,0,1)
button2 = gtk.Button("Print value")
button2.connect("clicked",self.print_value)
table.attach(button2,1,2,0,1)
window.add(table)
window.show_all()
def main(self):
gtk.main()
return
if __name__ == '__main__':
main = main_window()
main.main()
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http://www.daa.com.au/mailman/listinfo/pygtk
Read the PyGTK FAQ: http://www.async.com.br/faq/pygtk/
