The drop target effect has the same API as the
DropTargetAdapter so that it can provide custom visual
feedback when a
Classes that wish to provide their own drag under effect
can extend the
DropTargetEffect and override any applicable methods
DropTargetAdapter to display their own drag under effect.
The feedback value is either one of the FEEDBACK constants defined in
DND which is applicable to instances of this class,
or it must be built by bitwise OR'ing together
(that is, using the
int "|" operator) two or more
DND effect constants.
- FEEDBACK_EXPAND, FEEDBACK_INSERT_AFTER, FEEDBACK_INSERT_BEFORE, FEEDBACK_NONE, FEEDBACK_SELECT, FEEDBACK_SCROLL
(Control control)Creates a new
DropTargetEffectto handle the drag under effect on the specified
Controlover which the user positions the cursor to drop the data
- ERROR_NULL_ARGUMENT - if the control is null
getControlpublic Control getControl()Returns the Control which is registered for this DropTargetEffect. This is the control over which the user positions the cursor to drop the data.
- the Control which is registered for this DropTargetEffect
getItempublic Widget getItem
(int x, int y)Returns the item at the given x-y coordinate in the receiver or null if no such item exists. The x-y coordinate is in the display relative coordinates.
x- the x coordinate used to locate the item
y- the y coordinate used to locate the item
- the item at the given x-y coordinate, or null if the coordinate is not in a selectable item