code: def SCISetStyling(self, line: int, col: int,
                        numChar: int, style: bytearray):
          
          if not self.isPositionValid(line, col):
              return
  
          pos = self.positionFromLineIndex(line, col)
          self.SendScintilla(self.SCI_STARTSTYLING, pos, 0xFF)
          self.SendScintilla(self.SCI_SETSTYLING, numChar, style)
docs: Pythonic wrapper for the SCI_SETSTYLING command.
  
          For example, the following code applies style #3
          to the first five characters in the second line
          of the widget:
  
              SCISetStyling((0, 1), 5, 3)
  
          |Args|
  
          * ``line`` (**int**): line number where to start styling.
          * ``col`` (**int**): column number where to start styling.
          * ``numChar`` (**int**): number of characters to style.
          * ``style`` (**int**): Scintilla style number.
  
          |Returns|
  
          **None**
  
          |Raises|
  
          * **QtmacsArgumentError** if at least one argument has an invalid type.