bionic (3) XmObjectAtPoint.3.gz

Provided by: libmotif-dev_2.3.8-2build1_amd64 bug

NAME
       XmObjectAtPoint  —  A  toolkit  function  that  determines  which  child intersects or comes closest to a
       specified point "XmObjectAtPoint"


SYNOPSIS
       #include <Xm/Xm.h>
       Widget XmObjectAtPoint(
       Widget widget,
       Position x,
       Position y);


DESCRIPTION
       XmObjectAtPoint searches the child list of the specified  manager  widget  and  returns  the  child  most
       closely associated with the specified x,y coordinate pair.

       For  the typical Motif manager widget, XmObjectAtPoint uses the following rules to determine the returned
       object:

          •  If one child intersects x,y, XmObjectAtPoint returns the widget ID of that child.

          •  If more than one child intersects x,y, XmObjectAtPoint returns the widget ID of the visible child.

          •  If no child intersects x,y, XmObjectAtPoint returns NULL.

       The preceding rules are only general. In fact, each manager  widget  is  free  to  define  "most  closely
       associated"  as  it  desires.   For example, if no child intersects x,y, a manager might return the child
       closest to x,y.

       widget    Specifies a manager widget.

       x         Specifies the x-coordinate about which you are seeking child information. The x-coordinate must
                 be specified in pixels, relative to the left side of manager.

       y         Specifies the y-coordinate about which you are seeking child information. The y-coordinate must
                 be specified in pixels, relative to the top side of manager.


RETURN
       Returns the child of manager most closely associated with x,y.  If none of its children are  sufficiently
       associated with x,y, returns NULL.


       XmManager(3).

                                                                                              XmObjectAtPoint(3)