Listing 1: Die notwendigen Interfaces öffnen.

/* OeffneInterface.c */

#include <proto/exec.h>
#include <proto/graphics.h>

struct GraphicsBase  *GraphicsBase;
struct GraphicsIFace *IGraphics;

int main()
{
  if((GraphicsBase = (struct GraphicsBase *) IExec->OpenLibrary("graphics.library",50)))
  {
    if((IGraphics = (struct GraphicsIFace *) IExec->GetInterface((struct Library *)GraphicsBase,"main",1,NULL)))
    {
      /* Funktionen der graphics.library stehen für */
      /*PPC Programme zur Verfügung */
      IGraphics->WaitTOF();

      IExec->DropInterface((struct Interface *)IGraphics);
    }
    else IDOS->Printf("kein main Interface in der graphics.library\n");

    IExec->CloseLibrary((struct Library *)GraphicsBase);
  }
  else IDOS->Printf("es fehlt graphics.library V50\n");

  return( 0 );
}