WhoPlays

Hi, I'm writing a mod and am having a little problem: I want the player being able to drag an item in their inventory, but instead of dropping it into another slot it gets deleted and I can add more code after that (like sending a chat message). It would be REALLY useful, even if you might not understand why/how I thought I could use an event (onPlayerDraggingItem or something) and abort it if the item ID fits, but there is no event for a player dragging/dropping an item. There is for deleting/throwing out of the inventory, but that's not very useful. I have basic knowledge of Java, I had it in 10th grade. greetings, Tony! PS: Sorry if my English sucks ._. I'm german.. But I hope you understand what my problem is