Surprisingly the only thing you could drag onto maps before was only models and materials. Adding support for anything else was a pain in the ass so I made a quick way to do it with the Hammer API.
With this API I've made it so you can now drag sound events and soundscapes into maps straight from the asset browser.
And as a bonus this works in tool addons, meaning you can easily create your own drop targets for custom asset types. Here's how to implement your own.
