Hi Stozaki,
Thank you very much for your solution! I appreciate your efforts to create testmodel.slx.
Actually, I was looking for a way just to capture the mouse click event on the Simulink canvas (blank area), not in a particular block/line/annotation, so that I can trigger some function. Perhaps, Simulink does not allow this (I don't know).
Your solution still requires creating an annotation element, which is not the best solution to my use-case, but is something I can settle with.
Thank you very much!
Best Answer