public static bool FPDFLink_GetAnnotRect(IntPtr linkAnnot, FS_RECTF rect)
 {
     lock (LockObj)
     {
         return(Imports.FPDFLink_GetAnnotRect(linkAnnot, rect));
     }
 }
 public static extern bool FPDFLink_GetAnnotRect(IntPtr linkAnnot, FS_RECTF rect);