property Column.MinWidthAutoResize as Long
Retrieves or sets a value that indicates the minimum column's width when the WidthAutoResize is True.

 TypeDescription 
   Long A long expression that indicates the minimum column's width when the WidthAutoResize is True.  

Use the MinWidthAutoResize property to set the minimum column's width while the WidthAutoResize property is True. Use the Width property to specify the column's width. Use the ColumnAutoResize property to specify whether the control resizes the visible columns so they fit the control's client area.