public static int modifierFlags(boolean altP,boolean ctrlP,boolean metaP,boolean shiftP){
  int flags=0;
  if (altP)   flags|=F_ALT_DOWN;
  if (ctrlP)   flags|=F_CTRL_DOWN;
  if (metaP)   flags|=F_META_DOWN;
  if (shiftP)   flags|=F_SHIFT_DOWN;
  return flags;
}

public static int modifierFlags ( boolean altP , boolean ctrlP , boolean metaP , boolean shiftP ) { int flags = 0 ; if ( altP ) flags |= F_ALT_DOWN ; if ( ctrlP ) flags |= F_CTRL_DOWN ; if ( metaP ) flags |= F_META_DOWN ; if ( shiftP ) flags |= F_SHIFT_DOWN ; return flags ; }
a helper function used by platform input code to compose modifier flags .
