I have integrated OpenCV2.3 32bit libraries into the latest Nokia QT, but I am running Windows 7 64bit Home. This allows me to get a blank command prompt window with no compiling errors:
windowu.jpg

Qt Code: 
  1. INCLUDEPATH += C:\opencv\build\include \
  2.  
  3.     BASE_PATH = C:\opencv\build\gpu\x86
  4.         LIBS += -L$$BASE_PATH\lib \
  5.                 -lopencv_highgui231 \
  6.                 -lopencv_core231
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Qt Code: 
  1. ...
  2. using namespace cv;
  3. IplImage* img;
  4.  
  5. int main()
  6. {
  7.  
  8.     img = cvLoadImage("likely.jpg");
  9.     cvNamedWindow("Image",CV_WINDOW_AUTOSIZE);
  10.     cvShowImage("Image", img);
  11.     cvWaitKey(40);
  12.  
  13.  
  14.     return 0;
  15. }
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However when I switch to the 64bit libraries, I get a whole bunch of referencing errors similar to these:
snapsz.jpg

Does this mean OpenCV 2.3 64bit Libraries don't work on Nokia QT?