NAME¶
XmTrackingEvent — A Toolkit function that provides a modal
interaction "XmTrackingEvent" "Toolkit functions"
"XmTrackingEvent"
SYNOPSIS¶
#include <Xm/Xm.h>
Widget XmTrackingEvent(
Widget widget,
Cursor cursor,
Boolean confine_to,
XEvent *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.
XmTrackingLocate(3).