To clean up all instances of MCR, you need to dispose of the class objects associated with an MCR runtime and releases all the runtime instances. This can be done using either a custom signal handler that catches the window-CLOSE event or a shutdown hook.
Alternatively, you could opt for the "mcc -S" option instead of the "MWMCROption.OUTPROC" option. Normally, each class instance gets its own MATLAB Runtime context. However, by using the "mcc -S" option, only one MATLAB Runtime instance is created and shared across all class instances. This shared instance and the Runtime wrapper class object will be managed by the shutdown hook for proper release. For more information about the "mcc -S" option, please refer to the documentation below:
