When running Xephyr, its window title says "ctrl-shift grabs mouse and keyboard".
I am using ctrl-shift (left ctrl – left shift) as keyboard layout switching hotkeys and it interferes with Xephyr, when I press them, just the keyboard layout is switched, Xephyr doesn't grab mouse and keyboard.
I strongly want to avoid changing the hotkey combination for keyboard layout switching.
Is it possible to change the default hotkeys for mouse/keyboard grabbing in Xephyr?
Ideally, I would like a VirtualBox-like behavior: Xephyr window would grab mouse and keyboard when I mouse click on it and would release mouse and keyboard when I press the right ctrl. If this is is not possible, I'm open to alternative suggestions which will keep left ctrl – left shift for keyboard layout switching only.
Best Answer
It is hard wired in the code: http://cgit.freedesktop.org/xorg/xserver/tree/hw/kdrive/ephyr/hostx.c#n1002
You have to patch it:
There you can use any other key code you like.
The available key codes are defined in
/usr/include/X11/keysymdef.h