How to prevent stateflow from opening the system?

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When loading a model using 'load_system', simulink is opened in the background. When adding a subsystem (using the API) to the loaded model, the simulink remains in the background (so far so good). However if you add, for example, a state to a stateflow block (using the API again), simulink pops up to the foreground. To make things worse, the window is activated every time a new state is added.
How to prevent simulink to go to the foreground when sending these types of commands?
  2 Comments
Fangjun Jiang
Fangjun Jiang on 12 Feb 2020
Stateflow chart is sometimes treated differently than a subsystem. Can you contact the Mathworks tech support with a simplified script and see what they say?
bert de Jong
bert de Jong on 12 Feb 2020
Tech support should be active on these forums as well. An example scipt is a good idea :) :
ns = new_system('example');
load_system(ns);
add_block('sflib/Chart', 'example/sf');
rt = sfroot;
top=rt.find('-isa', 'Simulink.BlockDiagram','-and', 'Name', 'example');
sfChart = top.find('-isa','Stateflow.Chart','-and','Path','example/sf');
newState=Stateflow.State(sfChart);
newState.Name='newState';
% Next statement will open the simulink window:
newState.IsSubchart=1;

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Answers (1)

Fangjun Jiang
Fangjun Jiang on 12 Feb 2020
Maybe, it is dependent on how you program it? The following example doesn't show the model until the last line.
bdclose all;
ns = new_system('example');
add_block('sflib/Chart', 'example/sf');
rt = sfroot;
m = rt.find('-isa','Stateflow.Machine');
ch = m.find('-isa','Stateflow.Chart','-and','Name','sf');
sA = Stateflow.State(ch);
sA.Name = 'A';
sA.Position = [50 50 310 200];
sA1 = Stateflow.State(ch);
sA1.Name = 'A1';
sA1.Position = [80 120 90 60];
sA2 = Stateflow.State(ch);
sA2.Name = 'A2';
sA2.Position = [240 120 90 60];
%% use this to view
set(ns,'Open','On')
  3 Comments
Fangjun Jiang
Fangjun Jiang on 12 Feb 2020
Please update when tech support replies. I am interested to know.
bert de Jong
bert de Jong on 31 Mar 2020
It is builtin behaviour that cannot be changed.

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