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NAME
     DtEditorReplace - replace a portion of  the  contents  of  a
     DtEditor widget

SYNOPSIS
     #include <Dt/Editor.h>
     DtEditorErrorCode DtEditorReplace(Widget widget,
                                       XmTextPosition startPos,
                                       XmTextPosition endPos,
                                       DtEditorContentRec *data);

DESCRIPTION
     The DtEditorReplace() function replaces part of the contents
     of  a DtEditor widget with a string, a wide character string
     or sized buffer.  The data is transferred  to  the  DtEditor
     widget  using a DtEditorContentRec, which indicates the type
     of data being transferred along with the actual  data.   All
     data following the start position and up to, but not includ-
     ing, the end position is replaced.  If  the  start  position
     and  the  end position are equal, the data is inserted after
     the end position.  The character positions begin at zero and
     are  numbered  sequentially  from the beginning of the text.
     After the replacement, the insertion  cursor  is  positioned
     after the last character inserted.

     The widget argument specifies the DtEditor widget ID.

     The startPos argument specifies the starting character posi-
     tion  of  the portion to replace.  The replacement begins at
     this character.

     The endPos argument specifies the ending character  position
     of the portion to replace.  The replacement ends before this
     character.

     The data argument is a pointer to the  data  structure  con-
     taining the data to insert.

     For a complete definition of the  DtEditor  widget  and  its
     associated resources, see DtEditor(3).

     For  a  complete  definition  of   DtEditorContentRec,   see
     <Dt/Editor.h>.

RETURN VALUE
     Upon successful completion, the  DtEditorReplace()  function
     returns one of the following values:

        DtEDITOR_NO_ERRORS
              The data was replaced sucessfully.

        DtEDITOR_NULLS_REMOVED
              NULL characters were found  and  removed  from  the
              data.

     Otherwise, if the DtEditorReplace() function cannot  replace
     the  data in the DtEditor widget, it returns one of the fol-
     lowing values:

        DtEDITOR_INVALID_TYPE
              The Type field is not recognized.

        DtEDITOR_INVALID_RANGE
              The startPos argument is greater  than  the  endPos
              argument.

        DtEDITOR_ILLEGAL_SIZE
              The size of the buffer passed in is negative.

        DtEDITOR_NULL_ITEM
              The data buffer is NULL.

        DtEDITOR_INSUFFICIENT_MEMORY
              Not enough system memory is  available  to  replace
              the data.

EXAMPLES
     The following code segment modifies the contents of a DtEdi-
     tor widget to ``The quick fox.''

          Widget                  editor;
          DtEditorContentRec      cr;
          DtEditorErrorCode       status;
          XmTextPosition          start = (XmTextPosition) 4,
                                  end = (XmTextPosition) 9;
          char                    *sampleString1="The brown fox",
                                  *sampleString2="quick";
          cr.type = DtEDITOR_TEXT;
          cr.value.string = sampleString1;
          status = DtEditorSetContents(editor, &cr);
          if (status != DtEDITOR_NO_ERRORS && status != DtEDITOR_NULLS_REMOVED) {
                  printf("Unable to set contents of the widget\n");
          } else {
                  cr.type = DtEDITOR_TEXT;
                  cr.data.string = sampleString2;
                  status = DtEditorReplace(editor, start, end, &cr);
                  if (status != DtEDITOR_NO_ERRORS)
                    printf("Unable to replace part of the widget contents\n");
          }

APPLICATION USAGE
     If the data is in a disk file, rather than  in  memory,  the
     application should use DtEditorReplaceFromFile(3).

SEE ALSO
     DtEditor(5), DtEditor(3), DtEditorAppend(3), DtEditorAp-
     pendFromFile(3), DtEditorGetContents(3), DtEditorInsert(3),
     DtEditorInsertFromFile(3), DtEditorReplaceFromFile(3),
     DtEditorSaveContentsToFile(3), DtEditorSetContents(3),
     DtEditorSetContentsFromFile(3).

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