Not Just Paranoid

Another site by Pete Maynard

Mapping Print Screen (PrtSc) to Context Menu (right mouse click) in Wayland/Sway

Back in ye olden days, I used to set this in my i3 config.

exec_always --no-startup-id "xmodmap -e 'keycode  107 = Menu'"

Now though, I’ve no idea what I’m doing. This is a brain dump post, detailing how I remapped PrtSc to Menu.

Find keycodes

xev -event keyboard

Running the above and pressing print screen will look like this:

KeyPress event, serial 28, synthetic NO, window 0x2400001,
    root 0x39c, subw 0x0, time 163760698, (527,424), root:(1807,424),
    state 0x0, keycode 107 (keysym 0xff61, Print), same_screen YES,
    XLookupString gives 0 bytes: 
    XmbLookupString gives 0 bytes: 
    XFilterEvent returns: False

Now we know the keycode is 107, keysym is 0xff61, ‘Print’.


My sway config has these lines:

	input * {
	    xkb_layout gb
	    xkb_options "altwin:prtsc_rwin"

And I replaced Super_R and RWIN with, Menu and MENU respectively, in /usr/share/X11/xkb/symbols/altwin. Located right at the bottom of the file.

 // Win is mapped to the PrtSc key (and the usual Win key).
 partial modifier_keys
 xkb_symbols "prtsc_rwin" {
-    replace key <PRSC> { [ Super_R, Super_R ] };
-    modifier_map Mod4 { <PRSC>, <RWIN> };
+    replace key <PRSC> { [ Menu, Menu ] };
+    modifier_map Mod4 { <PRSC>, <MENU> };

I did try using Menu instead of prtsc_rwin, but that didn’t work, I don’t know why?


Yeah, I’m 100% sure there is a cleaner way to do this. And, in the future, I shall figure it out. But in the meantime, this works!

6 May 2020 | Tags ( sway wayland keyboard )

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