CentOS 7.0 - man page for xmtrackingevent (centos section 3)
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XmTrackingEvent(library call) XmTrackingEvent(library call)
XmTrackingEvent -- A Toolkit function that provides a modal interaction
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 interac-
tion. That is, the widget within which the interaction must occur, usually a
cursor 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 ButtonRelease or KeyRelease event that causes the function to
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.
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