Thanks your help.I have understood it.

thank u！You are really friendly. I know how to do this from your codes. If i want to use it in three lua file,should i have three different functions in different lua file to use it? eg: function my_keyhandlerone(key) print("key released:", key) end function my_keyhandlertwo(key) print(&qu...

I wanna use the love.keyreleased(key) in another lua file and require it in main.lua .
But when i do this, the love.keyreleased(key) of main.lua become unuseable.
Have any idea to solve this problem？ I need some help.