windows: add LoadKeyboardLayout and UnloadKeyboardLayout

Author: aymanbagabas

windows/syscall_windows.go

@@ -213,6 +213,8 @@ func NewCallbackCDecl(fn interface{}) uintptr {
 //sys	OpenProcess(desiredAccess uint32, inheritHandle bool, processId uint32) (handle Handle, err error)
 //sys	ShellExecute(hwnd Handle, verb *uint16, file *uint16, args *uint16, cwd *uint16, showCmd int32) (err error) [failretval<=32] = shell32.ShellExecuteW
 //sys	GetWindowThreadProcessId(hwnd HWND, pid *uint32) (tid uint32, err error) = user32.GetWindowThreadProcessId
+//sys	LoadKeyboardLayout(name *uint16, flags uint32) (hkl Handle) = user32.LoadKeyboardLayoutW
+//sys	UnloadKeyboardLayout(hkl Handle) (v bool) = user32.UnloadKeyboardLayout
 //sys	GetKeyboardLayout(tid uint32) (hkl Handle) = user32.GetKeyboardLayout
 //sys	toUnicodeEx(vkey uint32, scancode uint32, keystate *byte, pwszBuff *uint16, cchBuff int32, flags uint32, hkl Handle) (ret int32) = user32.ToUnicodeEx
 //sys	GetShellWindow() (shellWindow HWND) = user32.GetShellWindow

windows/types_windows.go

@@ -3404,3 +3404,14 @@ type DCB struct {
 	EvtChar    byte
 	wReserved1 uint16
 }
+
+// Keyboard Layout Flags.
+// See https://learn.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-loadkeyboardlayoutw
+const (
+	KLF_ACTIVATE      = 0x00000001
+	KLF_SUBSTITUTE_OK = 0x00000002
+	KLF_REORDER       = 0x00000008
+	KLF_REPLACELANG   = 0x00000010
+	KLF_NOTELLSHELL   = 0x00000080
+	KLF_SETFORPROCESS = 0x00000100
+)