[Tkinter-discuss] creating widgets generically, with a loop?

mkieverpy at tlink.de mkieverpy at tlink.de
Wed Jun 21 08:54:08 CEST 2006


> 
> Some background info: I have a Python/Tkinter script that displays a
> dialog with buttons, where each button launches a file for editing.
> Sort of like an HTML file in a browser, except with my script I can
> launch it using a particular program.
> 
> I've been trying to figure out a way of storing widget information
> (name of each widget, x and y positions, and a command to execute
> when activated) in an array so I can generically create each widget
> instead of hard-coding all the information. For example, here's a
> snippet of what I currently use:
> 
>     ...
>     Button(top, text="OO design info",
> command=self.launch_file23).grid(sticky="w",row=10,column=5)
>     ...
> 
>     ...
>     def launch_file23 ( self ): os.spawnl ( os.P_NOWAIT ,
> "c:\\Program Files\\TextPad 4\\TextPad.exe" , "TextPad.exe" , "d:\\My
> 
> 
> Documents\\prog_oo_design.txt" )
>     ...
> 
> If there was a way I could pass arguments to launch_file23 from the
> "command=" parameter, that would solve the problem nicely - I could
> store the info in an array, and then just loop to create the buttons.
> 
> Any ideas?
> 
> 
> Michael Steiner
> MikeJaySteiner at yahoo.com
> (480) 720-8902 (cell)
> 
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An idea using subclassing of 'Button':
--------------------------------------------------
from Tkinter import *

class ButtonParam ( Button ):
	def __init__ ( self, param, parent, **kw ):
		Button.__init__ ( self, parent, kw )
		self.Param = param
	def launch ( self ):
		print 'My Param:', self.Param

if __name__ == '__main__':
	tk = Tk ()
	for bspec in [('text1','par1'),('text2','par2'),('text3','par3')]:
		b = ButtonParam ( bspec [1], tk, text=bspec [0] )
		b.configure ( command=b.launch )
		b.pack ()
	tk.mainloop ()
------------------------------------------------------------------

Perhaps the parameters to __init__ need additional tweaking
and you might want more than one parameter.

Hope this helps,

Matthias Kievernagel
Software-Development
mkiever/at/web/dot/de



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