MATLAB Creating Graphical User Interfaces

Share Data Within App Designer Apps

NoteFor information on sharing data in apps you create using GUIDE, see “Share Data

Among Callbacks” on page 11-2.

Using properties is the best way to share data within an app because properties are

accessible to all functions and callbacks in an app. All UI components are properties, so

you can use this syntax to access and update UI components within your callbacks:

app.Component.Property

For example, these commands get and set the Value property of a gauge. In this case,

the name of the gauge is PressureGauge.

x = app.PressureGauge.Value; % Get the gauge value

app.PressureGauge.Value = 50; % Set the gauge value to 50

However, if you want to share an intermediate result, or data that multiple callbacks need

to access, then define a public or private property to store your data. Public properties

are accessible both inside and outside of the app, whereas private properties are only

accessible inside of the app. Code View provides a few different ways to create a

property:

• Expand the drop-down menu from the bottom half of the Properties button in the
  Editor tab. Select Private Property or Public Property.

Share Data Within App Designer Apps