MATLAB: How to create a popup control to set the mask block parameters in a masked subsystem in Simulink

Question

I would like to create a popup control to set the mask block parameters in a masked subsystem in Simulink.

The Pop-up control should allow me to set the Mask block parameters to either DEFAULT or USER-DEFINED.

Answer 1

To accomplish this, you need to define a Popup control variable in the mask. The Popup control variable will enable you to toggle between the 'Default set' and a 'User-Defined' set. Set the Assignment Field of the Variable to 'Literal'. Then define the Popup Strings as follows:

 

 Default|UserDefined

For help on Popup Control, refer to the "How Masked Parameters are Stored" section at the following URL:

http://www.mathworks.com/help/simulink/slref/mask-parameters.html

Use the Initialization commands field in the mask to define the Default Masked parameters. Take a look at sample code below. The code uses a Dynamic dialog to set the MaskValues to Default Values. The mask has a Popup control variable and 2 parameters. The Default Value of the parameters in this case are set to '1' and '1' by using set_param. Note that the Mask values are specified as cell arrays.

 

if (strcmp(def,'Default'))
   set_param(gcb,'MaskValues',{'Default','1','1'})
end

Help on creating Dynamic dialogs can be found at the following URL:

https://www.mathworks.com/help/simulink/ug/create-dynamic-mask-dialog-boxes.html