[PD] In 2019 is there a way to detect mouse down/up?

[Chris McCormick]

Hello,

Is there a way in a Pd [vanilla] patch to detect a mouse-down and 
mouse-up event in non-edit mode? So for example to build a GUI which 
works like a hardware keyboard key. Pressing it down mean on, letting go 
means off.

Cheers,

Chris.

-- 
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