How can I read a "ctrl+q" input from user using opencv and Python?

Question

I am using:-

key=cv2.waitKey(1) #& 0xFF 
    if key== ord('q'):
        ....................

but I need the input from user to be ctrl+q

Thanks

Answer 1

CTRL+Q is encoded as 17 in ASCII control key table. Below is a sample code.

cv2.imshow('frame', frame)
key = cv2.waitKey(1)
if key == 17:        # Ctrl+Q or ^Q
    break