Is it possible to create mappings or macros based on keydown and keyup events?

For example, if you press i to enter insert mode, and you press esc you leave insert mode and enter normal mode.

Could you make it so that if you pressed down i you entered insert mode, and when you released it, you left insert mode?

(not that you would want to do that, I am just giving it as an example of behavior)

Is it possible to create mappings or macros based on keydown and keyup events?

For example, if you press i you enter insert mode, and if you press esc you leave insert mode and enter normal mode.

Could you make it so that if you pressed down i you entered insert mode, and when you released it, you left insert mode?

(not that you would want to do that, I am just giving it as an example of behavior)

Is it possible to create mappings or keymacros based on keydown and keyup events?

For example, if you press i then you enter insert mode, and you press esc you leave insert mode and go to normal mode.

Could you make it so that if you pressed down i you entered insert mode, and when you released it, you left insert mode?  (not that you would want to do that, I am just giving it as an example of behavior)

Is it possible to create mappings or macros based on keydown and keyup events?

For example, if you press i to enter insert mode, and you press esc you leave insert mode and enter normal mode.

Could you make it so that if you pressed down i you entered insert mode, and when you released it, you left insert mode? 

(not that you would want to do that, I am just giving it as an example of behavior)