Waitbar error during calculation

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john
john on 9 Mar 2014
Commented: john on 18 Mar 2014
Hello,
if I press button "x"- that I want to close waitbar for example during for i=1:a during calculation, I got error, why?
The second argument must be a message string or a handle to an existing waitbar.
Error in ==> Simulator>pushbutton5_Callback at 2543
waitbar(step/steps,calculation,sprintf([calculation,' %d%%
...'],round(step/steps*100)));
This is my code:
calculation = waitbar(0,'Calculation...','Name','Status of calculation');
for i=1:a;
step = 1+step;
waitbar(step/steps,calculation,sprintf([actual caltulation,' %d%%...'],round(step/steps*100)));
end;
for i=1:b;
step = 1+step;
waitbar(step/steps,calculation,sprintf([actual caltulation,' %d%%...'],round(step/steps*100)));
end;
for i=1:c;
step = 1+step;
waitbar(step/steps,calculation,sprintf([actual caltulation,' %d%%...'],round(step/steps*100)));
end;

Accepted Answer

Image Analyst
Image Analyst on 9 Mar 2014
It was not expecting you to close it after you set it up and tried to use it again. To avoid the error message, wrap the call to waitbar in a try catch
try
waitbar(step/steps,calculation,sprintf([actual caltulation,' %d%%...'],round(step/steps*100)));
catch
% Don't do anything in the catch, just ignore the error.
end
  1 Comment
john
john on 18 Mar 2014
Is there possible to disable button "x"?

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