XmDataFieldXYToPos — A DataField function that accesses the character position nearest an x and y

XmDataFieldXYToPos accesses the character position nearest to the specified x and y position, relative to
       the upper left corner of the DataField widget.

       widget    Specifies the DataField widget ID

       x         Specifies the x position, relative to the upper left corner of the widget.

       y         Specifies the y position, relative to the upper left corner of the widget.

       For a complete definition of DataField and its associated resources, see XmDataField(3).

XmDataFieldXYToPos  —  A  DataField  function  that  accesses  the  character position nearest an x and y
       position "XmDataFieldXYToPos" "DataField functions" "XmDataFieldXYToPos"

XmDataField(3).

                                                                                           XmDataFieldXYToPos(3)

       Returns the character position in the text nearest the x and y position specified.  This  is  an  integer
       number of characters from the beginning of the buffer. The first character position is 0 (zero).

       #include <Xm/DataF.h>
       XmTextPositionXmDataFieldXYToPos(
       Widgetwidget,
       Positionx,
       Positiony);