As a matter of fact, I have set up most of the Enlightenment keybindings with the mod4 key. Using the mod4 key (usually the 'Windows' key if I understand correctly) for WM key bindings is certainly the way to go. You could bind Ctrl-Q in your WM to XKillClient rather than XDestroyWindow and it should then do what you want for Whatsapp, but this still doesn't seem like a good idea to me. But if you do, you really can't expect all programs to behave nicely with it. So, in short, you certianly may use a non-convential key binding scheme for your WM. You are running into one of those problems now. This is not - as far as I know - formalized anywhere in any binding protocol, but going against such widely used convention is bound to cause problems. There certainly are exceptions, but it is generally expected that Mod4 key combinations are for WMs and Ctrl key combinations are for clients (as are most Alt/Shift combinations unless they are paired with Mod4).

applications) generally do not bind Mod4 key combinations. This is why it is a bad idea for a window manager to bind that key as it will result in clients never detecting the key press.įor very similar reasons, clients (i.e. If you write a Qt program, you certainly can chose not to use Ctrl-Q for 'quit', you could use Ctrl-H if you wanted, or Ctrl-Shift-Space-F3-Y if you want to appeal to emacs users But Ctrl-Q is a de-facto standard client / application bound key. Qt) using it as a default for many applications.

This is both reflected by and reinforced by some toolkits (e.g. `Ctrl-Q` is a common key for quitting a program.

Whatsapp desktop app does not open