XmTextSetHighlight — A Text function that highlights text "XmTextSetHighlight" "Text functions"

XmTextSetHighlight highlights text between the two specified  character  positions.  The  mode  parameter
       determines  the type of highlighting. Highlighting text merely changes the visual appearance of the text;
       it does not set the selection.

       widget    Specifies the Text widget ID

       left      Specifies the position of the left boundary of text to be  highlighted.   This  is  an  integer
                 number  of  characters from the beginning of the text buffer. The first character position is 0
                 (zero).

       right     Specifies the position of the right boundary of text to be highlighted.   This  is  an  integer
                 number  of  characters from the beginning of the text buffer. The first character position is 0
                 (zero).

       mode      Specifies the  type  of  highlighting  to  be  done.  A  value  of  XmHIGHLIGHT_NORMAL  removes
                 highlighting.  A value of XmHIGHLIGHT_SELECTED highlights the text using reverse video. A value
                 of XmHIGHLIGHT_SECONDARY_SELECTED highlights the text using underlining.

       For a complete definition of Text and its associated resources, see XmText(3).

XmTextSetHighlight  —  A  Text  function  that  highlights  text  "XmTextSetHighlight"  "Text  functions"
       "XmTextSetHighlight"

XmText(3).

                                                                                           XmTextSetHighlight(3)

       #include <Xm/Text.h>
       voidXmTextSetHighlight(
       Widgetwidget,
       XmTextPositionleft,
       XmTextPositionright,
       XmHighlightModemode);