Get text from Game log (text ui in bottom-right corner)

How can I get the text in game log (text ui in bottom-right corner, I don’t know what is the name of that box). I want to track who get the item that drop from mobs. If its not the best way to get that data how can I find that data?
i.e 1 hp potion distribute to party_member_1

You can get that info from game packets.