Question

How to process office format files, such as docx, rtf, txt in FineReader Engine 12?

Answer

From storage 

It is same as work with pdf documents: FRDocument >AddImageFile with path to image and page Indices.

From memory

It's not implemented yet. But It is possible to load image-related formats by following steps (C# example):

1. Indicate path to image.
2. Define new object FileInfo from System.IO namespace:

   string imagePath = "D:\\Demo.tif";
   FileInfo file = new FileInfo(imagePath);

3. Identify length of image via length method from FileInfo:

   long len = file.Length;

4. Open image in binary view via BinaryReader from System.IO namespace and read bytes to bytes array:

   BinaryReader br = new BinaryReader(File.Open(imagePath, FileMode.Open));
   byte[] byteArray = br.ReadBytes((int)len);

5. Allocate block of memory for array and copy here content:

   IntPtr handle = Marshal.AllocHGlobal((int)len);
   Marshal.Copy(byteArray, 0, handle, (int)len);

6. Use AddImageFileFromMemory method of FRDocument to load file from memory and don't forget to free allocated memory:

   document.AddImageFileFromMemory((Int64)handle, null, null, null, "Demo.tif");
   Marshal.FreeHGlobal(handle);

7. Process document.