WMDROPFILES
WM_DROPFILES is a Windows message sent to a window when the user drops one or more files or folders onto it using the Shell drag‑and‑drop feature. The receiving window must be registered to accept drops by calling DragAcceptFiles with TRUE. When files are dropped, the system posts WM_DROPFILES to the window procedure with lParam containing an HDROP handle that identifies the dropped items.
To process the drop, the application uses the DragQueryFile API. First, obtain the number of dropped files
Notes and variants: The correct Windows message name is WM_DROPFILES; some references spell it as WMDROPFILES.
Security and behavior considerations include validating the received paths, handling potential long file names, and ensuring