[pygtk] I need help about progress bar.

[acano@systec.com]

On Tue, 22 Aug 2000 11:23:47 +0200, Javi Roman <javi@esware.com> wrote:
> Profit not to understand the operation of the progress bar. 
> Somebody to indicate to me as it would be the code to
> implement the following thing: Simply I want that when 
> pressing "button2" the progress bar is increased in a 10% for example. 
> 
> ------- BEGIN-CODE
> 
> def create_progress_bar():	
> 	win = GtkDialog()
> 	win.set_position (WIN_POS_CENTER)
> 	win.set_policy(FALSE, FALSE, TRUE)
> 	win.set_title("Progress Bar")
> 
> 	vbox = GtkVBox(spacing=5)
> 	vbox.set_border_width(10)
> 	win.vbox.pack_start(vbox)
> 
> 	label = GtkLabel("Undating ...")
> 	label.set_alignment(0, 0.5)
> 	vbox.pack_start(label, expand=FALSE)
> 
> 	pbar = GtkProgressBar()
> 	pbar.set_usize(225, 20)
> 	vbox.pack_start(pbar)

You need a "static" variable holding the update value so that
the bar keeps exapanding.  Ugly hack:

	update_val = 0.10
	pbar.set_data ("update_val", update_val)

        def updateBar(_button2, pbar=pbar): 
                update_val = pbar.get_data ("update_val")
                pbar.update(update_val)         
                update_val = update_val + 0.10
                pbar.set_data ("update_val", update_val)
> 
> 	def updateBar(_button2, pbar=pbar): # bad code
> 		pbar.update(0.15)           # bad code
> 	
> 	button = GtkButton("close")
> 	button2 = GtkButton("Update") 
> 	button.connect("clicked", win.destroy)
> 	button2.connect("clicked", updateBar)
> 	win.action_area.pack_start(button)
> 	win.action_area.pack_start(button2)
> 	button.set_flags(CAN_DEFAULT)
> 	button.grab_default()
> 	win.show_all()
> 
> --------END-CODE
> 
> Sincerely:  thank you very much
> 
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