How do I access AppDesigner variables in a function that I write and call?

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Ranjan Sonalkar
Ranjan Sonalkar on 27 Jan 2022
Commented: Jon on 28 Jan 2022
I am calling a function that I wrote from a GUI I designed with Appdesigner. I want to use many variables such as app.* in that function. I would rather not define a huge number of input variables for the function. I have used global variables in the past, use of global variables is not recommended by Matlab and teh global declaration gets a forbidding red underline. Is there an easy and compact way to access all the app.* variables functions called by the GUI designed in appdesigner?

Accepted Answer

Ranjan Sonalkar
Ranjan Sonalkar on 27 Jan 2022
So, if I call the function with "app" as an argument, as if "app" is a structure, I should be able to refer to all the variables that are defined in the Appdesigner code as app.var1, app.var2.... etc within the function?
  3 Comments
Jon
Jon on 28 Jan 2022
You can also call any public methods of app, so if your app had a public function, myAppFun
function result = myAppFun(app,x)
...
end
then inside of your function, myFun that takes app as an argument you could call it using for example
function myFun(app,x)
y = app.myAppFun(x)

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More Answers (1)

Jon
Jon on 27 Jan 2022
Edited: Jon on 27 Jan 2022
So I'm understanding that you have written a function and want to call it from within your appdesigner app. You then want this function to have access to the variables within the app. If so, I think you can get what you want simply by passing app as an argument to your function.

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