Sets the line cap style.
type
TLineCapStyle = ( lcButtEnd, lcRoundEnd, lcProjectSquareEnd );
Delphi-syntaxis:
procedure SetLineCap ( Linecap: TLineCapStyle );
C++-syntaxis:
void __fastcall SetLineCap ( TLineCapStyle Linecap );
Beschrijving:
Stel de lijnuiteindestijl in de grafische toestand in
Value Meaning
lcButtEnd Butt cap. The stroke is squared off at the endpoint of the path.
There is no projection beyond the end of the path.
lcRoundEnd Round cap. A semicircular arc with a diameter equal to the line width
is drawn around the endpoint and filled in. 
lcProjectSquareEnd Projecting square cap. The stroke continues beyond the endpoint of the path
for a distance equal to half the line width and is then squared off. 