Qt is C++. Anything that goes with C/C++ goes with Qt.
Yes any Imaging Library can be used with Qt : I've tried OpenCV, IPP (Intel), Halcon10, Open eVision,...as Plug-In.
Choice depends on your needs ( and on your money as Halcon or Open eVision are commercial products). Get a sample overview with this link :
http://ftp.elvitec.fr/Pleora/TECHNOT...eGEV_QtSample/
and check also OpenCV on internet for more Qt based samples. ( Halcon SDK has also a QT Sample)
SRSR
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