Thread Subject: chancel

Hello,

I need something like an emergency stop switch in my gui. I have a button
for this, but I don't know, how I can cancel the running function. I only
can cancel the running functions with CTRL + C. But I don't know how to
programm it.
Has anybody an idea?
Thank you very much.
Andrea

Andrea,
   You can use setappdata to set a cancel flag. When the
program starts, you can set the flag to 0, like this -
setappdata(<your_fig_handle>,'cancelflag',0);
If your function is running something in a loop, check the
value of this cancelflag at the beginning of the loop by
using getappdata.
cf = getappdata(<your_fig_handle>,'cancelflag');
if cf > 0
   return;
end
 And in the callback routine for your 'emergency switch
button', set this flag value to a positive number like this -
setappdata(<your_fig_handle>,'cancelflag',1);

So, if you have pressed the cancel button during the
execution, the flag gets set and this is checked in the loop
and function returns at that point.

Hope this helps.


"Andrea Schmidt" <external.Andrea.Schmidt@de.bosch.com>
wrote in message <f8uoh0$o3n$1@news4.fe.internet.bosch.com>...
> Hello,
>
> I need something like an emergency stop switch in my gui.
I have a button
> for this, but I don't know, how I can cancel the running
function. I only
> can cancel the running functions with CTRL + C. But I
don't know how to
> programm it.
> Has anybody an idea?
> Thank you very much.
> Andrea
>
>