Language switcher

Use any key to switch between input input layouts (informally speaking, 'languages').

The list of switched languages is confined to only two recent languages even if the system has more than two languages.

For example, your system has the following languages installed:

• English (US)
• Ukrainian
• Chinese (Simplified)
• Thai (Kedmanee)

and the current keyboard layout was English,

and the application is called with the following Parameters:

lswitch.exe 20 0x409 0xa0
(meaning CapsLock, English, and LeftShift).

Then pressing CapsLock would cyclically switch between English and Ukrainian.

Pressing LeftCtrl + LeftShift to switch to Chinese. Then pressing CapsLock would cyclically switch between English and Chinese.

Pressing LeftCtrl + LeftShift to switch to Thai. Then pressing CapsLock would cyclically switch between English and Thai.

Then pressing CapsLock would do:

• if the current language was anything but English (e.g. Thai), lswitch would change to English and remember Thai as last non-English layout;
• if the current language was English (any layout), lswitch would change the layout to last remembered non-English layout (see above).
  • if nothing known about the non-English layout (e.g. the lswitch has just been started), the next available layout will be chosen;
• if with LeftShift, normal CapsLock state will change

To chose the non_English layout, simply use your Windows standard hotkey (e.g. LeftCtrl+LeftShift). Then

Usage

Synopsis

lswitch [keycode [default_layout [guard_keycode]]]
lswitch q

Parameters

Each parameter may take decimal (42) or hexadecimal value (0x123ABCD).

• keycode (optional): integer.
  Which key to use for keyboard switching.
  Default: 0x5d context menu key.
  Another good candidate is a CapsLock key with a keycode of 20.
• default_layout: ulong.
  Default: 0x409 (English)
  Specifies which language is 'main' for the system
• guard_keycode: ulong.
  Default: (not set)
  Which key is to use for 'normal' operation of the keycode key.
  This is useful in combinations like CapsLock and LeftShift so that pressing CapsLock would change the layout, but pressing LeftShift + CapsLock would act as normal CapsLock operation.
• q: finds the running instance of lswitch and lets it close

Remarks

lswitch is intended to have a low memory footprint. The Release version .exe is only 5 kb in length.

Forked from valodzka/lswitch .

Adapted haali.cs.msu.ru/winutils .