title: how can I debug with the OpenCV source code
body: <p>I am using VS2010 with OpenCV 2.3.1, and opencv is installed by using <em>OpenCV-2.3.1-win-superpack</em>. Now I want to understand the facedetect sample (opencv\samples\c\facedetect.cpp) in detail, I wanna know how to process the specific xml feature file (haarcascade_frontalface_alt.xml), and how to decide which feature to be used. These are all
  in the CascadeClassifier class, but when I use "go to definition", the result file is a .hpp
  head file, so where is the implementation file? when I use vs2010 to debug, the debugger can not locate the implementation file either. some advice?</p>