Redefines the current path as the area that would be painted if the path were stroked
_WinAPI_WidenPath ( $hDC )
|$hDC||Handle to a device context that contains a closed path.|
The device context identified by the $hDC parameter must contain a closed path.
The _WinAPI_WidenPath() function is successful only if the current pen has a width, in device units, of more than one.
Any Bezier curves in the path are converted to sequences of straight lines approximating the widened curves.
As such, no Bezier curves remain in the path after _WinAPI_WidenPath() is called.
Search WidenPath in MSDN Library.