Need help with delete(h)

Hello All, i have a message box like this in my GUI:

h=msgbox('Calculation in progress');

Now I have added delete(h); after the calculation stuff in between these two. My script runs for user defined multiple cases. After completing on the loop I have another message box:

   h=msgbox('Calculation Completed');

Now the thing is if someone closes the 1st message box by clicking cross on the window the calculation stops with error. Can you suggest me anything?

[Steven Lord]

What is the full exact text of the error message?

Answer 1

[Geoff Hayes]

adi - if you are observing the error

 Error using delete
 Invalid or deleted object.

because the dialog has already been deleted, then try using the ishandle function to check whether the h is valid or not. For example,

 if ishandle(h)
     delete(h);
 end