This plug-in can be the running window after the UE is packaged and the window receives the message that the system file is dragged to the window in the PIE mode, and obtains the corresponding file address and folder address.
1. First create an Actor blueprint
2. Create a DT System Drag Drop File component in the blueprint
3. Respond to the On System Drag Drop File event in the DT System Drag Drop File component
4. Implement your own corresponding logic in the blueprint
The callback event will have two parameters to return
File Path List : The full address of all dragged-in files
Folder Path List: The full address of all dragged-in folders
Because it supports dragging in multiple files at the same time, and it may be a file or a folder, so the return value is in the form of an array, which needs to be traversed by yourself.
System Drag Drop File For Windows in Code Plugins - UE Marketplace
After packing the running window and the message that the system file is dragged to the window in the PIE mode, the corresponding file address and folder address are obtained.
https://www.unrealengine.com/marketplace/product/3862a635707c40658b107b7a8f5c4756