问题
I adopted the code from this answer in order to draw an overlay window, which stays on top of all windows, always. But I find that this window keeps flickering whenever there is a keypress or a button click. I wanted to know if this can be stopped somehow. Increasing the time did not help me, as my terminal was frozen for few seconds when I increased time to 5000000000
The code was tested on Ubuntu 16.04 LTS.
回答1:
I could not find a solution using the XComposite suite of functions. However, you can easily achieve the same effect with (in my opinion) much more flexibility and pure X11 via CWOverrideRedirect. You can see example usage for it here: https://stackoverflow.com/a/57780772/4204557
来源：https://stackoverflow.com/questions/54077129/overlay-window-in-x11-keeps-flickering