Hi,
I'm working through the examples in the SDK, starting with the very first example for the preview manager...
https://docs.luxonis.com/projects/sdk/en/latest/managers/preview_manager/
I have a very basic question, aimed at checking I've set up everything properly on Ubuntu. Using the very first example (shown below), I get no output.

from depthai_sdk import Previews
from depthai_sdk.managers import PipelineManager, PreviewManager
import depthai as dai
pm = PipelineManager()
pm.createColorCam(xout=True)
with dai.Device(pm.pipeline) as device:
    pv = PreviewManager(display=[Previews.color.name])
    pv.createQueues(device)
    while True:
        pv.prepareFrames()
        pv.showFrames()

However_ if I add a line to import cv2, and a line to perform a waitKey() test (as shown below), I can see the output

from depthai_sdk import Previews
from depthai_sdk.managers import PipelineManager, PreviewManager
import depthai as dai
import cv2
pm = PipelineManager()
pm.createColorCam(xout=True)
with dai.Device(pm.pipeline) as device:
    pv = PreviewManager(display=[Previews.color.name])
    pv.createQueues(device)
    while True:
        pv.prepareFrames()
        pv.showFrames()

        if cv2.waitKey(1) == ord('q'):
            break

Before I get more deeply involved in the use of the SDK. I just have a quick question - Is the problem due to something lacking in my setup, or is the example incomplete/out of date? Thanks.

Hi there,
that is a very interesting catch (this part worked before, something must have changed on our part or OpenCv's, we will look into it).
But yes, what you added to the code is correct, those 2 lines of code:
if cv2.waitKey(1) == ord('q'):
break
also, let you stop the program with the button "q".
You can also see in the "Example of use" section that this part of the code is added.