oWin:GetWidth( <cStr> ) -> <nWidth>

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 PARAMETER:

   <cStr>        Is the string or char for that the pixel length is
               requested

   <oFont>       Is the font that cStr uses. If <oFont>  is not supplied,
               ::GetWidth() will use the font stored in oFont


 DESCRIPTION:

  This method allows you to determine the exact length of a string using a
  certain Font. This can be useful when you want to know if a string can be 
  completely written to a window without being 'clipped', or you want to
  size a MDI Window to the MDI Parent. ::GetWidth() takes the font information
  supplied by <oFont> into account.