on-drop-file in frame:basic-mixin

Called when the user drags a file onto the window.¹ Drag-and-drop must first be enabled for the window with accept-drop-files.

Under Mac OS X, when the application is running and user double-clicks an application-handled file or drags a file onto the application's icon, the main thread's application file handler is called (see application-file-handler). The default handler calls the on-drop-file method of the most-recently activated frame if drag-and-drop is enabled for that frame, independent of the frame's eventspace (but the method is called in the frame's eventspace's handler thread). When the application is not running, the filenames are provided as command-line arguments.

• (send a-frame:basic-mixin on-drop-file pathname void
     pathname : string

  Calls handler:edit-file with pathname as an argument.