The interesting error I occur when I push the two button at the same time.

4 views (last 30 days)
In my gui code,there is a pushbutton1_callback function and a pushbutton2_callback function with a for loop and waitbar.
If I push the button2,the pushbutton2_callback will do the loop.Before the loop ends,I also push the button1. Then the pushbutton1_callback function will begin and pushbutton2_callback is paused.When the pushbutton1_callback ends,the pushbutton2_callback begins where it is paused.Also it gives out the error message 'Couldn't find waitbar handles'.
However,if I add the code 'pause(2)' at the end of pushbutton1_callback.The error message would not appear.It's very interesting. Do you know the answer?
QiQin Zhan
QiQin Zhan on 7 Mar 2013
@Jing: The waitbar and loop are in the pushbutton2_callback.I'm sure the waitbar wasn't cloesed because if I add the code 'pause(2)' at the end of pushbutton1_callback,there would be no error message.
@ Walter Roberson: If I pause 2 seconds or longer,the code is runnnig correctly.What's more,if there are more data to proceed in pushbutton2_callback.The time to pause should be even longer,or the error message will appear again.How can I solve it?

Sign in to comment.

Answers (1)

QiQin Zhan
QiQin Zhan on 7 Mar 2013
I think I've known what's wrong.The code in pushbutton1_callback opens a msgbox. If I comment the msgbox,there would be no error message.If I set a breakpoint where the msgbox generate,and close the msgbox before the pushbutton2_callback begins where it is paused.There would also be no error.Why is it so strange?
QiQin Zhan
QiQin Zhan on 7 Mar 2013
s=sprintf('Simulation in process:%d',floor(i/n*100));
waitbar(i / n, gcf, [s '%']);

Sign in to comment.


Find more on Dialog Boxes in Help Center and File Exchange


Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!