;0x041E 1054 = Thai
;0x0409 1033 = English_United_States

if !LangID := GetKeyboardLanguage()
{
	MsgBox, % "GetKeyboardLayout function failed " ErrorLevel
	return
}

if (LangID = 0x041E AND GetKeyState("LShift", "SC029")) ; check if left shift + grave accent is pressed
{
    ;SetDefaultKeyboard(1033)
    <+SC029::~      ; Left shift + Grave accent = ~ (Tilde)
}
return

GetKeyboardLanguage()
{
	if !ThreadId := DllCall("user32.dll\GetWindowThreadProcessId", "Ptr", WinActive("A"), "UInt", 0, "UInt")
		return false

	if !KBLayout := DllCall("user32.dll\GetKeyboardLayout", "UInt", ThreadId, "UInt")
		return false

	return KBLayout & 0xFFFF
}

SetDefaultKeyboard(LocaleID)
{
	Global
	SPI_SETDEFAULTINPUTLANG := 0x005A
	SPIF_SENDWININICHANGE := 2
	Lan := DllCall("LoadKeyboardLayout", "Str", Format("{:08x}", LocaleID), "Int", 0)
	VarSetCapacity(Lan%LocaleID%, 4, 0)
	NumPut(LocaleID, Lan%LocaleID%)
	DllCall("SystemParametersInfo", "UInt", SPI_SETDEFAULTINPUTLANG, "UInt", 0, "UPtr", &Lan%LocaleID%, "UInt", SPIF_SENDWININICHANGE)
	WinGet, windows, List
	Loop %windows% {
		PostMessage 0x50, 0, %Lan%, , % "ahk_id " windows%A_Index%
	}
}
return