XmTrackingLocate man page
XmTrackingLocate — A Toolkit function that provides a modal interaction
#include <Xm/Xm.h> Widget XmTrackingLocate( Widget widget, Cursor cursor, Boolean confine_to);
XmTrackingLocate provides a modal interface for selection of a component. It is intended to support context help. This function is implemented as XmTrackingEvent.
NOTE: This function is obsolete and exists for compatibility with previous releases. It has been replaced by XmTrackingEvent.
Specifies the widget ID of a widget to use as the basis of the modal interaction. That is, the widget within which the interaction must occur, usually a top-level shell.
Specifies the cursor to be used for the pointer during the interaction. This is a standard X cursor name.
Specifies whether or not the cursor should be confined to widget
Returns the widget or gadget that contains the pointer when BSelect is released or a key is released. If no widget or gadget contains the pointer, the function returns NULL.