Release a custom gadget RastPort.
Source position: intuition.pas line 3281
| procedure ReleaseGIRPort( | 
| Rp: PRastPort | 
| ); | 
| Rp | 
 | A pointer to the RastPort returned by ObtainGIRPort(). This pointer can be nil, in which case nothing happens. | 
The corresponding function to ObtainGIRPort(), it releases arbitration used by Intuition for gadget RastPorts.
| 
 | Set up a RastPort for a custom gadget. |