Hello,
A device context is a structure that defines a set of graphic objects and their associated attributes, as well as the graphic modes that affect output. The NI-IMAQ imgPlotDC function plots a buffer to a device context given a device context handle.
Device context functions are listed here on the website and have a detailed description of how they are used to display images.
Let me know if you have further questions.
Good luck with your application and have a great day!
Regards,
Koninika
Applications Engineer
National Instruments
http://www.ni.com/support
