MATLAB Answers

Disable app while calculating

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Alejandro Fernández
Alejandro Fernández on 24 Sep 2020
Commented: Adam Danz on 28 Sep 2020
Hi, I would like to know if there is an option to disable all buttons in the app while is calculating something made with a changed callback, I mean, what I would like is that if I make a change in some numeric box for example, until all the associated code has been executed, do not let me do anything without disabling all the buttons individually.

Answers (2)

Adam Danz
Adam Danz on 24 Sep 2020
Edited: Adam Danz on 25 Sep 2020
How to disable app components while app is busy
  1. List all components you'd like to disable/enable in a vector of handles. Importantly, each component must have an "Enable" properrty. If there are sections with many components that you'd like to control, place them in a uipanel. Enabling and disabling uipanels controls everything within the panel.
  2. Create a function within the app that contains a logical input which will disable all components when the input is False and enable them when it's tTrue.
  3. In callback functions that are expected to consume significant time, set the Enable propery of all selected components to Off at the top of the callback function and then set them to On at the end, or wherever you'd like the changes to occur.
The full demo app is attached but here are the two critical functions.
% Example of step 1 & 2
function toggleComponents(app, enableFlag)
% enableFlag is either true (Enable=on) or false (enable=off).
components = [app.Button, app.Button2, app.ButtonGroup, app.Panel];
if enableFlag
flag = 'On';
flag = 'Off';
set(components, 'Enable', flag)
% Example of step 3
function ButtonPushed(app, event)
toggleComponents(app, false)
pause(3) % <-- do something interesting
toggleComponents(app, true)

Mario Malic
Mario Malic on 25 Sep 2020
uiprogressdlg is also a good option, as it "overlays" an uifigure and makes anything behind it unable to be pressed (I did not personally test it, but it should work)
  1 Comment
Adam Danz
Adam Danz on 28 Sep 2020
Yes, this is a good approach to disabling the entire app during a process.

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