Simulink-Blockmask: How to add a button and assign a callback by m-file script?

I what to modify many library elements programmatically and add some buttons to the block mask. How can this be done?

(After adding some buttons to the mask manually I can't find any changes with get_param(gcb,'ObjectParameters')).

Answer 1

[Fangjun Jiang]

To get mask parameters

get_param(gcb,'MaskNames'), or 'MaskVariables','MaskPropertyNameString',...

To do mask programmatically

web(fullfile(docroot, 'simulink/slref/simulink.mask-class.html'))