public function SetColWidth( 
   col : int,
   width : int
);

Parameters

col

The column index (1 based).

width

The width in Excel internal units(0/256).

Target Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, Windows Vista, Windows Server 2008 family

Reference