The function drop-object-drop-effect
gets or sets the current effect of the dropping operation.
effect
can be one of:
The object will be copied. This is the most common value for operations between applications.
The object will be moved. This is usually triggered by the user dragging with a platform-specific modifier key pressed.
A link to the object will be created. This is usually triggered by the user dragging with a platform-specific modifier key pressed.
No dragging is possible.
drop-object-drop-effect
should only be called within a
drop-callback
. It is not supported on X11/Motif. See simple-pane for information about drop callbacks.
CAPI User Guide and Reference Manual (Macintosh version) - 3 Aug 2017