Question concerning the OSC client

[JMC64]

Hello,
While experimenting with the OSC client ( in C) , I noticed that the button messages are send after the event happened : if you press a button more than 2 sec.. then you receive the message "long pressed"... but after 2 seconds and the message is sent once the button is released.

Not really good at programming in C, I do not really understand how I could modify the main.c for doing the following:
Once user presses the button, the OSC routine immediately sends "button_is_being_pressed" and once the button is released sends "button_ released". In other word, to send the real status of the button.

This would help tremendously in combining Pots and Button in the following way:
Pot and No but -> do something
Pot + Button_being_pressed_while_turning_pot -> do something else

Hoping that someone could help,

Thank you a lot