I use CxImage to open a 4-page TIFF image file, i can get 1st, 3rd and 4th page information, however i can not retrieve 2nd page data, it always returns 1st page information (image width/height), is it a bug of CxImage or i did something wrong? I downloaded CxImage 6 months ago.

The code snippet :

  FILE *inFile = fopen(file_name, "rb");
  if (inFile == NULL)
     return;

  CxImage *img = new CxImage();
  img->SetFrame(-1);
  img->Decode(inFile, 6);
 
  // return 4
  int NumFrames = img->GetNumFrames();
 
 // 1st page
 img->SetFrame(0);
 img->Decode(inFile, 6);
 int w = img->GetWidth();
 int h = img->GetHeight();

 // something is wrong here.
 // 2nd page, width/height are same as 1st page width/height, actually they are not
 img->SetFrame(1);
 img->Decode(inFile, 6);
 w = img->GetWidth();
 h = img->GetHeight();

 // 3rd page, everything is correct
 img->SetFrame(2);
 img->Decode(inFile, 6);
 w = img->GetWidth();
 h = img->GetHeight();

 // 4rd page, everything is correct
 img->SetFrame(3);
 img->Decode(inFile, 6);
 w = img->GetWidth();
 h = img->GetHeight();