Hi Joe,
I could not find a callback which is triggered when the currently selected Simulink model is changed. You can get the currently selected Simulink model using the “gcs” command. Please refer to the documentation below:
I recommend using a timer to periodically check the value of “gcs” and update the list box accordingly.
Here is how this can be done:
1. Create a private property ‘UpdateTimer’ in the app.
2. In the startup function of the app, create and start a timer. The period of update may be adjusted appropriately.
function startupFcn(app)
app.UpdateTimer = timer(...
'ExecutionMode', 'fixedRate', ...
'Period', 1.0, ...
'TimerFcn', @(~,~) updateListBox(app));
start(app.UpdateTimer);
end
3. Add the timer callback function, ‘updateListBox’ as a private function.
function updateListBox(app)
try
currentModel = gcs; % Get the current Simulink model
if ~strcmp(app.ListBox.Value, currentModel)
app.ListBox.Value = currentModel; % Update the ListBox if there's a change
end
catch
% Handle the case where gcs might fail (e.g., no model open)
app.ListBox.Value = '';
end
end
4. In the app’s close request function, stop and delete the timer object created in step 1 before deletion of ‘app’ object.
function UIFigureCloseRequest(app, event)
stop(app.UpdateTimer); % Stop the timer
delete(app.UpdateTimer);
delete(app)
end
I hope this helps!
