Getting an array of bytes out of Windows::Storage::Streams::IBuffer

by

You can use IBufferByteAccess, through exotic COM casts:

byte* GetPointerToPixelData(IBuffer^ buffer)
{
   // Cast to Object^, then to its underlying IInspectable interface.

   Object^ obj = buffer;
   ComPtr<IInspectable> insp(reinterpret_cast<IInspectable*>(obj));

   // Query the IBufferByteAccess interface.
   ComPtr<IBufferByteAccess> bufferByteAccess;
   ThrowIfFailed(insp.As(&bufferByteAccess));

   // Retrieve the buffer data.

   byte* pixels = nullptr;
   ThrowIfFailed(bufferByteAccess->Buffer(&pixels));

   return pixels;

}

Code sample copied from http://cm-bloggers.blogspot.fi/2012/09/accessing-image-pixel-data-in-ccx.html

More Related Contents:

  1. Fastest way to check if a file exists using standard C++/C++11,14,17/C?
  2. changing the delimiter for cin (c++)
  3. How does std::flush work?
  4. How to include libraries in Visual Studio 2012?
  5. Setting the internal buffer used by a standard stream (pubsetbuf)
  6. Creating an input stream from constant memory
  7. C++ custom stream manipulator that changes next item on stream
  8. How to include OpenSSL in Visual Studio
  9. Qt 5.1.1: Application failed to start because platform plugin “windows” is missing
  10. How can a Metro app in Windows 8 communicate with a backend desktop app on the same machine?
  11. How to compile Qt 5 under Windows or Linux, 32 or 64 bit, static or dynamic on Visual Studio or g++
  12. How to read file content into istringstream?
  13. How can I compose output streams, so output goes multiple places at once?
  14. Why does ostream_iterator not work as expected?
  15. error C2679: binary ‘
  16. How can I get the position and draw rectangle using opencv?
  17. How to read entire stream into a std::string?
  18. Initializer list not working with vector in Visual Studio 2012? [duplicate]
  19. std::ostringstream printing the address of the c-string instead of its content
  20. Reading and writing to the same file using the same fstream
  21. How to resize Image in C# WinRT/winmd?
  22. Is it valid to bind non-const lvalue-references to rvalues in C++ 11?(modified)
  23. Replace a line in text file
  24. How to enforce the ‘override’ keyword?
  25. How to easily indent output to ofstream?
  26. how to calculate the textbock height and width in on load if i create textblock from code?
  27. std::ofstream, check if file exists before writing
  28. How to deploy a Metro App to the Desktop?
  29. Visual Studio 2013: CL.exe exited with code -1073741515
  30. OpenCV cv::Mat to std::ifstream for base64 encoding

Leave a Comment