My software always uses either SDL or Glut and OpenGL so it has been very easy to put out a web build. I highly recommend these technologies if you want to keep with C++ but also target the web (as well as every other platform under the sun ;)https://github.com/kripken/emscripten
A few simple demos using the technology can be found at http://devio.us/~kpedersen/mutiny/doku.php?id=demos
(apologies for the slow server)
Edited by Karsten_, 04 November 2013 - 01:43 PM.
FlasCC unfortunately still targets the unportable proprietary Flash stage system.