XmObjectAtPoint(library call)                 XmObjectAtPoint(library call)




 NAME    [Toc]    [Back]
      XmObjectAtPoint - A toolkit function that determines which child
      intersects or comes closest to a specified point

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

 DESCRIPTION    [Toc]    [Back]
      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    [Toc]    [Back]
      Returns the child of manager most closely associated with x,y.  If
      none of its children are sufficiently associated with x,y, returns
      NULL.

 RELATED    [Toc]    [Back]
      XmManager(3).


                                    - 1 -       Formatted:  January 24, 2005