Set the primary pen for a RastPort.
Source position: agraphics.pas line 2099
| procedure SetAPen( | 
| Rp: PRastPort; | 
| Pen: LongWord | 
| ); | 
| Rp | 
 | A pointer to a RastPort | 
| Pen | 
 | Pen (0..255) | 
Set the primary drawing pen (A-Pen) for lines, fills, and text. This functions turns on PenMode for the RastPort.
| 
 | Get the A Pen value for a RastPort | |
| 
 | Set secondary pen for a RastPort | |
| 
 | Get the B Pen value for a RastPort |