Conhost console search

LayoutConHost.cs

// See https://aka.ms/new-console-template for more information
using System.Diagnostics;
using System.Runtime.InteropServices;

while (true)
{
    var process = Process.GetCurrentProcess();
    ulong cohost = 0;
    int status;
    status = NtQueryInformationProcess(process.Handle, 0x31, ref cohost, Marshal.SizeOf(typeof(ulong)), out _); // cohost
    if (status != 0 || cohost == 0)
        break;
    process = Process.GetProcessById((int)cohost);


    while (true)
    {
        var isVisible = IsWindowVisible(process.MainWindowHandle);

        Console.WriteLine($"{process.ProcessName} {process.Id} {isVisible}");
        if (isVisible)
        {
            var t = GetWindowThreadProcessId(process.MainWindowHandle, IntPtr.Zero);
            var layout = GetKeyboardLayout(t);
            Console.WriteLine(layout);
            break;
        }

        var pbi = new ParentProcessUtilities();
        status = NtQueryInformationProcessParent(process.Handle, 0, ref pbi, Marshal.SizeOf<ParentProcessUtilities>(), out _);
        if (status != 0 || pbi.InheritedFromUniqueProcessId == 0)
            break;

        process = Process.GetProcessById(pbi.InheritedFromUniqueProcessId.ToInt32());
        
    }
    Console.WriteLine("Change language");
    Console.ReadLine();
}

[DllImport("user32.dll")]
static extern uint GetWindowThreadProcessId(IntPtr hwnd, IntPtr proccess);
[DllImport("user32.dll")]
static extern IntPtr GetKeyboardLayout(uint thread);

[DllImport("ntdll.dll")]
static extern int NtQueryInformationProcess(IntPtr processHandle, int processInformationClass, ref ulong processInformation, int processInformationLength, out int returnLength);

[DllImport("ntdll.dll", EntryPoint = "NtQueryInformationProcess")]
static extern int NtQueryInformationProcessParent(IntPtr processHandle, int processInformationClass, ref ParentProcessUtilities processInformation, int processInformationLength, out int returnLength);


[DllImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool IsWindowVisible(IntPtr hWnd);

[StructLayout(LayoutKind.Sequential)]
public struct ParentProcessUtilities
{
    // These members must match PROCESS_BASIC_INFORMATION
    internal IntPtr Reserved1;
    internal IntPtr PebBaseAddress;
    internal IntPtr Reserved2_0;
    internal IntPtr Reserved2_1;
    internal IntPtr UniqueProcessId;
    internal IntPtr InheritedFromUniqueProcessId;
}