How Do I Extract User Inputs From a UIFigure?

I am trying to make a window with several checkboxes, and an OK button. I want the state of the checkboxes to be saved in memory when the user closes the window with the OK button. As soon as the figure closes, the data is gone. And I cannot figure out how to extract the data from the close function handle itself. Do I need to create a 'ValueChangedFcn' for each checkbox and change it in real time?

Answer 1

[Brandon]

I found my answer in another question: How do I pass variables from one GUI to another

The documentiation on GUI is especially lacking. setappdata() and getappdata() ought to be on the pages on buttons and checkboxes.

Answer 2

[Voss]

To save the state when the uifigure is closed, specify a CloseRequestFcn for the uifigure that gets the state of each checkbox and saves that information to file (e.g., a mat file or a text file).

To restore the state when re-opening the uifigure:

• if it's in an app, specify a startupFcn for the app that reads the file you saved and sets the state of the checkboxes
• if it's not in an app, read the file in the script or function that creates the uifigure and set the state of the checkboxes when they are created

[Brandon]

I need to user inputs to stay in memory while the program continues to run.

[Voss]

Maybe it is convenient to make the uifigure invisible instead of closing it in the closeRequestFcn. While it's invisible, the checkbox states are still available.

Answer 3

[Brandon]

I resolved my issue by creating a global array. I can then declare the global array be used inside of the close function. I assign every checkbox value to my global array. I'm not very happy with this solution as it feels like a workaround.

My solution goes something like this:

global userSelect
userSelect = false*[1:10]
fig = uifigure(etc..)
cBoxList = {};
{Make checkboxes and put them into the cell array}

function closeIt(cBoxList,fig)
global userSelect
for i=1:10
    userSelect(i) = cBoxList{i}.Value;
end
close(fig)
end