XmTrackingEvent

Motif 2.1 Programmer's Reference

XmTrackingEvent

A Toolkit function that provides a modal interaction

Format

#include <Xm/Xm.h>
Widget XmTrackingEvent
Widget
widgetCursor cursorBoolean
confine_toXEvent
*event_return

DESCRIPTION

XmTrackingEvent provides a modal interface for selection of a component. It is intended to support context help. The function calls the XmUpdateDisplay function. XmTrackingEvent then grabs the pointer and discards succeeding events until BSelect is released or a key is pressed and then released. The function then returns the widget or gadget that contains the pointer when BSelect is released or a key is released, and ungrabs the pointer.

widget

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.

cursor

Specifies the cursor to be used for the pointer during the interaction. This is a standard X cursor name.

confine_to

Specifies whether or not the cursor should be confined to widget.

event_return

Returns the ButtonRelease or KeyRelease event that causes the function to return.

RETURN

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.

RELATED

XmTrackingLocate (3).