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I'm trying to debug a frustrating problem whereby I cannot load video files in OpenCV. One suggestion is to abandon the OpenCV pre-built libraries and instead build OpenCV on the same machine as the failing project.

That is what I am now trying to do.

In the OpenCV Quick Start about how to build applications with OpenCV inside the Microsoft Visual Studio one important step is to add the additional include directories to the project property sheet by opening the project's property pages, navigating to Configuration Properties -> C/C++ -> General -> Additional Include Directories. Using the pre-built distribution I am advised to add the directory C:\OpenCV2.4.6\build\include and indeed inside that directory are sub-directories opencv and opencv2. One of the files my project (like most OpenCV projects) will need is highgui.hpp from the line

#include "opencv2/highgui/highgui.hpp"

In the pre-built OpenCV distribution highgui.hpp ends up in C:\OpenCV2.4.6\build\include\opencv2\highgui and is thus correctly picked up at compile time because of the additional include directory.

Having generated with CMake and built with Visual Studio 2012 the latest version of OpenCV on my machine (though perhaps unsuccessfully) I cannot find highgui.hpp. It is not in C:\Users\timregan\Documents\GitHub\opencv\build\include (in fact there are no sub-directories opencv nor opencv2 in there) nore is it anywhere in C:\Users\timregan\Documents\GitHub\opencv.

Where is highgui.hpp? What step, flag, etc. did I omit in order to generate it on my machine? Why are the opencv and opencv2 sub-directories missing completely from C:\Users\timregan\Documents\GitHub\opencv\build\include after I have generated and built OpenCV?

(N.B. I'm using CMake 2.8.12 and Visual Studio 2012 on a Windows 8 machine.)

I'm trying to debug a frustrating problem whereby I cannot load video files in OpenCV. One suggestion is to abandon the OpenCV pre-built libraries and instead build OpenCV on the same machine as the failing project.

That is what I am now trying to do.

In the OpenCV Quick Start about how to build applications with OpenCV inside the Microsoft Visual Studio one important step is to add the additional include directories to the project property sheet by opening the project's property pages, navigating to Configuration Properties -> C/C++ -> General -> Additional Include Directories. Using the pre-built distribution I am advised to add the directory C:\OpenCV2.4.6\build\include and indeed inside that directory are sub-directories opencv and opencv2. One of the files my project (like most OpenCV projects) will need is highgui.hpp from the line

#include "opencv2/highgui/highgui.hpp"

In the pre-built OpenCV distribution highgui.hpp ends up in C:\OpenCV2.4.6\build\include\opencv2\highgui and is thus correctly picked up at compile time because of the additional include directory.

Having generated with CMake and built with Visual Studio 2012 the latest version of OpenCV on my machine (though perhaps unsuccessfully) I cannot find highgui.hpp. It is not in C:\Users\timregan\Documents\GitHub\opencv\build\include (in fact there are no sub-directories opencv nor opencv2 in there) nore is it anywhere in C:\Users\timregan\Documents\GitHub\opencvthere). It is in C:\opencv-2.4\modules\highgui\include\opencv2\highgui.