On Fri, Jun 27, 2008 at 7:12 AM, Michael O'Donnell
<[EMAIL PROTECTED]> wrote:
> Hi Anil,
>
> A pure Tkinter dropdown box: click on a button and a menu drops
> down, allowing you to select. If you specify a callback function, this is
> called
> when you make a selection:
>
> from Tkinter import *
> import os, sys
>
> # SelecteButton Class - creates a button which when clicked on gives
> a popup menu.
> # if the callback arg is given, this is a function called when a
> selection is made, expecting the
> # selected option as arg
> # The value can be accessed by asking the widget for its x.selected attribute.
> # Coded Mick O'Donnell [EMAIL PROTECTED]
>
> class SelectButton(Label):
>
> def __init__(self, parent, options, callback=None, default=None,
> **otherKeys):
> Label.__init__(self, parent, bg="white", relief="raised",
> bd=2, **otherKeys)
> self.options=options
> self.callback=callback
> self.oldGrab=None
> if default==None: default=self.options[0]
> self.bind("<Button-1>", self.showOptions)
> self.setOption(default, False)
>
> def setOption(self, selected, docallback=True):
> self.selected=selected
> self["text"]=selected
> if docallback and self.callback:
> self.callback(selected)
>
> def showOptions(self, event):
> menu=Menu(None, tearoff=0)
> for option in self.options:
> menu.add_command(label=option, command= lambda
> lab1=option: self.setOption(lab1))
> menu.post(event.widget.winfo_rootx(), event.widget.winfo_rooty())
> if os.name =="posix" and sys.platform != "darwin":
> menu.grab_set()
>
> # DEMO
>
> if __name__ == '__main__':
>
> def showSelected(label): print "You selected: ", label
>
> tk = Tk()
> ssw = SelectButton(tk, ['1','2','3','4','5'],
> callback=showSelected, default=str(2))
> ssw.pack(side=TOP, expand=TRUE, fill=BOTH)
> tk.mainloop()
If you want to go this way, then Tkinter.OptionMenu is there already.
--
-- Guilherme H. Polo Goncalves
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