I'm using QT Creator, and I admit that I've never used an IDE for programming before. I'm using OpenCV libraries, and have them installed in C:\Program Files\OpenCV1.2\include\opencv
I started with a simple command line project, and tried to include highgui.h (which lives in the OpenCV directory mentioned above). If I include the whole filename, like #include "C:\...\highgui.h", I assume that it fails to then find other files highgui.h itself includes.
I then added INCLUDEPATH += C:\Program Files\OpenCV1.2\include\opencv to the project file. Didn't help. Building still gives "highgui: no such file or directory".
I added C:\Program Files\OpenCV1.2\include\opencv to the system path, and verified that it shows up in the environment variables of QT Creator's build configuration. I also opened a command line, and verified it was in the path. Still get the "highgui: no such file or directory" error.
I tried including it with several different syntax, which I admit I don't fully understand the difference between, such as #include <highgui>, #include "highgui.h", etc.
Can someone help me understand how to get QT Creator to see these third party library paths?