<[EMAIL PROTECTED]> wrote
The behavior I seek is that one and only one Toplevel window
gets generated no matter how many times the original Tkinter
button is pressed.
Here is a minimal example of what I think you want?
Does that help?
--
Alan Gauld
Author of the Learn to Program web site
http://www.freenetpages.co.uk/hp/alan.gauld
--------------------------------------------------
# TestTopLevel.py
from Tkinter import *
class MainWin(Frame):
def __init__(self, parent, sub=None):
Frame.__init__(self, parent)
self.parent = parent
Label(self, text="This is the main window").pack()
self.bShow = Button(self, text="Show Sub", command =
self.doShow)
self.bShow.pack()
self.bQuit = Button(self, text="Quit", command = self.quit)
self.bQuit.pack()
self.sub = sub
self.pack()
def doShow(self):
try: self.sub.deiconify()
except:
self.sub = SubWindow(self.parent)
self.sub.withdraw()
self.sub.deiconify()
class SubWindow(Toplevel):
def __init__(self, parent):
Toplevel.__init__(self, parent)
Label(self, text="Child Window").pack()
self.bClose = Button(self, text="Close", command=self.doClose)
self.bClose.pack()
self.withdraw()
def doClose(self):
self.withdraw()
def main():
app = Tk()
m = MainWin(app, SubWindow(app))
app.mainloop()
if __name__ == "__main__": main()
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