clear listbox in gui

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marwa marwan
marwa marwan on 15 Dec 2017
Commented: Hossein Davari on 5 Mar 2021
I have a listbox in gui that display the result of execution... when I want to run another time I want the past resut in listbox to be removed and display the message(please wait the result)and then the new result is display i just dont know how to clear the listbox and display that message.

Answers (2)

Image Analyst
Image Analyst on 15 Dec 2017
Did you try to set it to null?
handles.listbox1.String = [];
  5 Comments
Image Analyst
Image Analyst on 17 Dec 2017
Using a waitbar is not required for clearing a listbox. That's a totally separate issue. Perhaps you cleared it and immediately went into a computationally intensive loop and so the screen did not refresh. To have it refresh immediately, use drawnow.
handles.listbox1.String = [];
drawnow;
marwa marwan
marwa marwan on 18 Dec 2017
I know its separate issue but I just didnt know why my list box didnt refreshed so I used wait bar just to knowledge the GUI user that the program is under execution thank you for explination that is exactly what I want..

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Hossein Davari
Hossein Davari on 5 Mar 2021
ListBoxHandle.Items = {}; %clear the list of items in listbox
edg = errordlg('Message');
waitfor(edg) %program will continue when the dialog box is closed.
drawnow
  2 Comments
Walter Roberson
Walter Roberson on 5 Mar 2021
Items is, I suspect, for list boxes in app designer.

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