Xuening wrote:
> I have a problem about menu by using Tkinter. I want to make a dynamic
> menu. That is when I create a new view/window, one menuitem will be
> added to the menu. and when I kill a window, the correponding menuitem
> will be deleted. I write a simple code and I can add menuitem now. But
> I don't know how to remove the item when I close the window.
>
> The following is my code:
>
>
> ==============================
> from Tkinter import*
>
> class App:
> def __init__(self):
> root=Tk()
> self.root=root
> self.doMenus()
> root.config(menu=self.mBar)
> delete=deletewindow()
> self.root.mainloop()
>
> def doMenus(self):
> mBar=Menu(self.root)
> self.mBar=mBar
> self.doFileMenu()
> self.doWindowMenu()
>
> def doFileMenu(self):
> filemenu = Menu(self.mBar,tearoff=0,background='yellow')
> filemenu.add_command(label='New
> window',underline=0,command=self.newWindow)
> filemenu.add('separator')
>
> filemenu.add_command(label='Quit',underline=0,command=self.root.destroy)
> self.filemenu=filemenu
> self.mBar.add_cascade(label="File", menu=self.filemenu)
>
> def doWindowMenu(self):
> WinName = Menu(self.mBar,
> tearoff=0,postcommand=self.windowListUpdate)
> self.windowMenu=WinName
> self.mBar.add_cascade(label="Window", menu=self.windowMenu)
> self.windowList=[]
> self.nWindows=0
>
> def windowListUpdate(self):
> self.windowMenu.delete(0, END)
> for window in self.windowList:
> self.windowMenu.add_command(label=window)
>
>
> def newWindow(self):
> self.nWindows+=1
> windowName = "Window %d"% self.nWindows
> self.windowList.append(windowName)
> self.windowListUpdate()
>
> root2=Tk()
> self.root2=root2
> self.root2.title(windowName)
> canvas=Canvas(self.root2, width=450,height=300,bg='green')
> canvas.pack()
> self.canvas=canvas
>
> if __name__ == '__main__':
> test=App()
>
>
> Maybe I should bind something to <destroy> event. Everytime I close the
> window, the name of the window should be removed from the windowList
> and refresh the all the menuitems again. But I don't know how and
> where to add the "destroy" event. Can anyone give me a hand????
>
> Thanks a lot!!
>
The Menu Tk Widget has a delete or deletecommand method(s) the first
accepts an index the second a Menu label, both will remove the menu entry
for more on this...
http://effbot.org/tkinterbook/menu.htm
Regards
Martin
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