Volume 6A: Motif Programming Manual

CHARACTER_POSITION@SPAN@Start and end of selection in bytes LINE_NUMBER@SPAN@Start and end

line numbers COLUMN_NUMBER@SPAN@Start and end column numbers LENGTH@INTEGER@Number of

bytes in selection USER@TEXT@Name of user running owner PROCEDURE@TEXT@Name of selected procedure

MODULE@TEXT@Name of selected module PROCESS@INTEGER, TEXT@Process ID of owner

TASK@INTEGER, TEXT@Task ID of owner CLASS@TEXT@Class of owner (WM_CLASS)

NAME@TEXT@Name of owner (WM_NAME) CLIENT_WINDOW@WINDOW@Top−level window of owner

DELETE@NULL@True if owner deleted selection INSERT_SELECTION@NULL@Insert specified selection

INSERT_PROPERTY@NULL@Insert specified property

_ Motif uses some new objects to encapsulate information about various aspects of a drag and drop transfer. These

objects act like widgets, in that they are created by the programmer, they have resources that can be set and retrieved,

and they interact with the application using callbacks. However, they are unlike traditional widgets in that they are not

visible components of the user interface. The DragContext object is used to store information during a drag, while the

DropTransfer object keeps track of information during a drop. The DragIcon object is used to represent the pointer

shape that is used during a drag and drop transfer. The DropSite object maintains information about all of the drop

sites in an application. The new Display and Screen objects also provide resources that control the behavior of drag

and drop, although they are not specifically ...