How to use the handle of APP Designer in MATLAB Function?

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Yao
Yao 2020-6-9
评论： Yao 2020-6-11
Hi!
I have a GUI designed in the APP Designer named App1, in the Model callbacks I set InitFcn as
happ = App1;
I want to change something in the App1 such as
happ.EditField.Value = u;
u is the input of the Matlab Fuction in my Simulink model. The changing is failed, happ can not use in the MATLAB Fuction. I am trying to set happ as parameter. It not work.
Who can slove the question? I really appreciate it.

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回答（1 个）

Adam Danz
Adam Danz 2020-6-9
'u' should be a character vector or string scalar.
If you're trying to input a numeric value, it must first be converted to a string using num2str() or sprintf() or compose() (and others).
If the error persists, please share the entire error message, the value of u, and please confirm that EditField is a text edit field.
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Adam Danz
Adam Danz 2020-6-10
There are two ways to access the app handle from within any function.
1) Pass the handles as a variable.
myFunction(input1, input2, app)
2) "Find" the app handle from within the function. See this demo for an example, see section "Find the handle to an app that's already opened".

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