public static void SetNextKeyboardLayout()
{
IntPtr hWnd = IntPtr.Zero;
var threadId = GetWindowThreadProcessId(GetForegroundWindow(), IntPtr.Zero);
var info = new GUITHREADINFO();
info.cbSize = Marshal.SizeOf(info);
var success = GetGUIThreadInfo(threadId, ref info);
// target = hwndCaret || hwndFocus || (AttachThreadInput + GetFocus) || hwndActive || GetForegroundWindow
var focusedHandle = GetFocusedHandle();
if (success)
{
if (info.hwndCaret != IntPtr.Zero)
{
hWnd = info.hwndCaret;
}
else if (info.hwndFocus != IntPtr.Zero)
{
hWnd = info.hwndFocus;
}
else if (focusedHandle != IntPtr.Zero)
{
hWnd = focusedHandle;
}
else if (info.hwndActive != IntPtr.Zero)
{
hWnd = info.hwndActive;
}
}
else
{
hWnd = focusedHandle;
}
if (hWnd == IntPtr.Zero)
{
hWnd = GetForegroundWindow();
}
PostMessage(hWnd, WM_INPUTLANGCHANGEREQUEST, INPUTLANGCHANGE_FORWARD, HKL_NEXT);
}
private static IntPtr WindowPtr()
{
IntPtr hWnd = IntPtr.Zero;
var threadId = GetWindowThreadProcessId(GetForegroundWindow(), IntPtr.Zero);
var info = new GUITHREADINFO();
info.cbSize = Marshal.SizeOf(info);
var success = GetGUIThreadInfo(threadId, ref info);
// target = hwndCaret || hwndFocus || (AttachThreadInput + GetFocus) || hwndActive || GetForegroundWindow
var focusedHandle = GetFocusedHandle();
if (success)
{
if (info.hwndCaret != IntPtr.Zero)
{
hWnd = info.hwndCaret;
}
else if (info.hwndFocus != IntPtr.Zero)
{
hWnd = info.hwndFocus;
}
else if (focusedHandle != IntPtr.Zero)
{
hWnd = focusedHandle;
}
else if (info.hwndActive != IntPtr.Zero)
{
hWnd = info.hwndActive;
}
}
else
{
hWnd = focusedHandle;
}
if (hWnd == IntPtr.Zero)
{
hWnd = GetForegroundWindow();
}
return(hWnd);
}
static extern bool GetGUIThreadInfo(uint idThread, ref GUITHREADINFO lpgui);
static extern bool GetGUIThreadInfo(uint idThread, ref GUITHREADINFO lpgui);
public static void SetNextKeyboardLayout()
{
IntPtr hWnd = IntPtr.Zero;
var threadId = GetWindowThreadProcessId(GetForegroundWindow(), IntPtr.Zero);
var info = new GUITHREADINFO();
info.cbSize = Marshal.SizeOf(info);
var success = GetGUIThreadInfo(threadId, ref info);
// target = hwndCaret || hwndFocus || (AttachThreadInput + GetFocus) || hwndActive || GetForegroundWindow
var focusedHandle = GetFocusedHandle();
if (success)
{
if (info.hwndCaret != IntPtr.Zero)
{
hWnd = info.hwndCaret;
}
else if (info.hwndFocus != IntPtr.Zero)
{
hWnd = info.hwndFocus;
}
else if (focusedHandle != IntPtr.Zero)
{
hWnd = focusedHandle;
}
else if (info.hwndActive != IntPtr.Zero)
{
hWnd = info.hwndActive;
}
}
else
{
hWnd = focusedHandle;
}
if(hWnd == IntPtr.Zero) { hWnd = GetForegroundWindow(); }
PostMessage(hWnd, WM_INPUTLANGCHANGEREQUEST, INPUTLANGCHANGE_FORWARD, HKL_NEXT);
}
