check if mainAPP exist in app designer
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hi, i read this guide :
i want to know if Main App has been launched.. otherwise I launch it from here
5 Kommentare
chrisw23
am 20 Jun. 2023
Since Matlab R2020 you have the option to set the 'Single Running Instance' flag. Maybe this is a workaround for your problem.
"When Single Running Instance is selected and you run the app multiple times, MATLAB reuses the existing instance and brings it to the front rather than creating a new one. When this option is cleared, MATLAB creates a new app instance each time you run it and continues to run the existing instances. These run behaviors apply to apps that you run from the Apps tab on the MATLAB Toolstrip or from the Command Window.
When you run apps from App Designer their behavior doesn't change whether this option is selected or cleared. App Designer always closes the existing app instance before creating a new one."
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Walter Roberson
am 20 Jun. 2023
No. MATLAB does not offer any any general mechanism to test whether variables of particular classes exist.
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