RE: [Sheflug] stupid C question

[Ross Goodley <nospam [at] krisalis.co.uk>]

Can you post some of the code José? looks like you may have a stack-frame
(auto) variable being accessed out of scope, but I don't really have enough
info to go on.
	R

-----Original Message-----
From: José Luis Gómez Dans [mailto:nospam [at] sheffield.ac.uk]
Sent: Friday, November 03, 2000 03:37
To: Sheflug
Subject: Re: [Sheflug] stupid C question


On Fri, Nov 03, 2000 at 02:03:19PM -0000, Ross Goodley wrote:
> *(int *)user_data = 9;  ?

	Nice'n easy :) Thanks both Ross and Alastair for the answer.
Now, more problems on the way... Let's assume that there's 3 functions
in here: interface,callback1 and callback2. In interface() I call
callback1 and callback2 with my pointer as per my previous message.
  gtk_signal_connect (GTK_OBJECT (plot_ampl), "clicked",
  		      GTK_SIGNAL_FUNC (callback1),
     		      (gpointer)&my_int_var);

  void callback1(GtkEditable *editable, gpointer user_data);
  void callback2(GtkEditable *editable, gpointer user_data);
		
	I want to make sure that callback1 updates the value of
my_int_var to something else. I then want this updated value to be used
by callback2. For a start, the value is defined as 1 in the interface()
function. 

	However, when an event makes the program go to callback1, the
value in the pointer is a rosy 0, instead of 1. Any changes that I might
make in callback1 are lost (in principle, I don't mind what value gets
to callback1).

	Any clues?
	José
		
-- 
José L Gómez Dans			PhD student
					Radar & Communications Group
					Department of Electronic Engineering
					University of Sheffield UK
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