Wed Aug 14, 2019 8:32 am
On the System settings -> Workspace -> Shortcuts -> Global Shortcuts,
click on any custom shortcut,
then press keyboard shortcut "Ctrl+Shift", it shows "Ctrl+Shift+ ...",
waiting for next key. Something like "Ctrl+Shift+ABCDEFG" is available to use,
But it doesn't trigger the "Ctrl+Shift" itself as a available shortcut.
Press only the "Ctrl+Shift" then release, it doesn't save this shortcut.
I then noticed that in keyboard layout, there is a keyboard shortcut at
System settings -> Hardware -> Input Devices -> Layouts -> Shortcuts for Switching Layout,
there is a shortcut "Ctrl+Shift" to switch to another layout available to choose.
So that seems "Ctrl+Shift" is technically feasible by KDE or system.
How can I use this shortcut in my other software?
The software is IBus, a kind of Linux input method solution.
Use "Ctrl+Shift" to switch to next input method(basically switch on or off)
I can do some programming stuff,
if I have to modify some source code that is also fine.
I' just doesn't familiar KDE... It's brand new for me.
I've learned it when my first time to touch the PC,
that was 9 years old.
Today I'm 22, I'v use this one for 13 years.
That's handy, it's just the two nearby key at left corner.
I set this on every operating system I ever meet,
Windows 98, 2000, XP, 7, 8, 8.1, Ubuntu, Windows 10, CentOS, Debian...
Actually I've just moved from Debian 10 with Gnome 3 to Debian 10 with KDE,
I find a method to use that shortcut to switch between IBus input method on that Gnome environment.
Considering this is Linux the open source world,
there should be a way to do this on KDE,
but I still haven't found it using Google.