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import Tkinter
_root = Tkinter.Tk()
_mainloop_started = 0
_open_windows = []
class Tkwindow(Tkinter.Toplevel):
def __init__(self, master):
if master is None:
master = _root
else:
master.addDependent(self)
Tkinter.Toplevel.__init__(self, master)
self.protocol("WM_DELETE_WINDOW", self.close)
self._dependents = []
def open(self):
global _mainloop_started
_open_windows.append(self)
if not _mainloop_started:
_root.withdraw()
_root.mainloop()
_mainloop_started = 1
def close(self):
for window in self._dependents:
window.close()
self.destroy()
if self.master is not _root:
self.master.removeDependent(self)
_open_windows.remove(self)
if not _open_windows:
_root.destroy()
def addDependent(self, window):
self._dependents.append(window)
def removeDependent(self, window):
self._dependents.remove(window)
if __name__ == '__main__':
class Test(Tkwindow):
def __init__(self, master = None):
Tkwindow.__init__(self, master)
Tkinter.Button(self, text='Clone', command=self.clone).pack()
self.open()
def clone(self):
Test()
Test()
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