How can I Create a separate Image in the "Main" Window

edited February 2017 in Raspberry PI

I am reading sensor data through I2C on the Raspberry Pi, number crunching and displaying (realtime) in the window . . . size(420,420). No problem, all working as required! Now, I would like to have a 2nd window for a GUI. I have tried using CreateImage (which seems to put a window in the main window) to no avail. The one thing I notice is that the program code always seems to prefer displaying in the "main" window and ignores all attempts to create this 2nd window?! I suspect the realtime activity is a problem.

Would switching to a more current coding system like processing.js, p5.js or help?

Any advice would be appreciated.

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