-(void)loadDocument:(NSString *)documentName inView:(UIWebView *)webView  {      NSString *path = [[NSBundle mainBundle] pathForResource:documentName ofType:nil];      NSURL *url = [NSURL fileURLWithPath:path];      NSURLRequest *request = [NSURLRequest requestWithURL:url];      [webView loadRequest:request];  } 

CGPDFDocumentRef GetPDFDocumentRef(NSString *filename)  {      CFStringRef path;      CFURLRef url;      CGPDFDocumentRef document;      size_t count;            path = CFStringCreateWithCString (NULL, [filename UTF8String], kCFStringEncodingUTF8);      url = CFURLCreateWithFileSystemPath (NULL, path, kCFURLPOSIXPathStyle, 0);            CFRelease (path);      document = CGPDFDocumentCreateWithURL (url);      CFRelease(url);      count = CGPDFDocumentGetNumberOfPages (document);      if (count == 0) {          printf("[%s] needs at least one page!\n", [filename UTF8String]);          return NULL;       } else {          printf("[%ld] pages loaded in this PDF!\n", count);      }      return document;  }    void DisplayPDFPage (CGContextRef myContext, size_t pageNumber, NSString *filename)  {      CGPDFDocumentRef document;      CGPDFPageRef page;            document = GetPDFDocumentRef (filename);      page = CGPDFDocumentGetPage (document, pageNumber);      CGContextDrawPDFPage (myContext, page);      CGPDFDocumentRelease (document);  } 

CGContextRef context = UIGraphicsGetCurrentContext();  CGContextTranslateCTM(context, 80, self.frame.size.height-60);  CGContextScaleCTM(context, 1, -1); 

- (PDFViewController *)viewControllerAtIndex:(NSUInteger)index   {      //Return the PDFViewController for the given index.      if (([self.pagePDF count] == 0 )|| (index > [self.pagePDF count]) ) {          return nil;      }            //Create a new view controller and pass suitable data.      PDFViewController *dataViewController = [[PDFViewController alloc]initWithNibName:@"PDFViewController" bundle:nil];      //dataViewController.pdfview = [self.pagePDF objectAtIndex:index];      dataViewController.pdfview = [[PDFView alloc]initWithFrame:self.view.frame atPage:index];      [dataViewController.view addSubview:dataViewController.pdfview];      NSLog(@"index = %d",index);      return dataViewController;  }    - (NSUInteger) indexOfViewController:(PDFViewController *)viewController  {      return [self.pagePDF indexOfObject:viewController.pdfview];  }    - (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerBeforeViewController:(UIViewController *)viewController  {      NSUInteger index = [self indexOfViewController:(PDFViewController *)viewController];      if ((index == 0 ) || (index == NSNotFound)){          return nil;      }            index--;      return  [self viewControllerAtIndex:index];  }    - (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(UIViewController *)viewController  {      NSUInteger index = [self indexOfViewController:(PDFViewController *)viewController];      if (index == NSNotFound)      {          return nil;      }            index++;            if (index == [self.pagePDF count]){          return  nil;      }            return [self viewControllerAtIndex:index];  } 

- (void)drawLayer:(CALayer *)layer inContext:(CGContextRef)ctx

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event ……

- (id)initWithFrame:(CGRect)frame onPage:(NSInteger)page

CG_EXTERN void CGPathMoveToPoint(CGMutablePathRef path,   const CGAffineTransform *m, CGFloat x, CGFloat y) CG_EXTERN void CGPathAddLineToPoint(CGMutablePathRef path,   const CGAffineTransform *m, CGFloat x, CGFloat y)