A custom modal dialog as an AppDesigner App

版本 1.0.0 (27.4 KB) 作者: RST

This is sample code for a custom, modal AppDesigner dialog. R2020b onwards

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更新时间 2024/5/9

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A sample custom modal dialog in AppDesigner.

The app is called from an ordinary function, much like uigetfile().

How it works:

1) The modal dialog app

sets its main WindowStyle to 'modal'
when a button is pressed
calls its ValueChangedFcn to pass the dialog result to the caller
closes the window

2) A .m-file function 'showModalDialog()'

returns a variable 'result' with default value []
has an inner function 'valueChanged' that sets 'result' per its one argument
when running it
creates the ModalDialogApp
sets the app's ValueChangedFcn to 'valueChanged'
uiwait()s on the dialog's mainFigure

Thus showModalDialog() is blocked until the dialog closes on a button press or window close. The dialog result, if any, is passed via a call to the inner function, thus minimising name pollution.

In this example the dialog result is a scalar double, but the result may be as complex as necessary.

In an app, showModalDialog() could become a private member function; this would, for example, let the app set the position of the dialog.

See MATLAB answer:

'is there a generic modal dialog for AppDesigner'

引用格式

RST (2024). A custom modal dialog as an AppDesigner App (https://www.mathworks.com/matlabcentral/fileexchange/165686-a-custom-modal-dialog-as-an-appdesigner-app), MATLAB Central File Exchange. 检索来源 2024/7/23.