Управление видимостью дочернего процесса

#include <WS2tcpip.h>
int main()
{
    HWND hWnd;
    hWnd = FindWindowA("ConsoleWindowClass", NULL);
    Sleep(500);
    ShowWindow(hWnd, 0);
    Sleep(500);
    ShowWindow(hWnd, 1);
    Sleep(500);
    ShowWindow(hWnd, 0);
    Sleep(500);
    ShowWindow(hWnd, 1);
    Sleep(500);
}

//файл code.exe
#include <WS2tcpip.h>
int main()
{
    HWND hWnd;
    hWnd = FindWindowA("ConsoleWindowClass", NULL);
    ShowWindow(hWnd, 0);
    system("pause");
}

#include <windows.h>
int main()
{
    STARTUPINFO cif;
    ZeroMemory(&cif, sizeof(STARTUPINFO));
    PROCESS_INFORMATION pi;
    CreateProcess(L"code.exe", NULL, NULL, NULL, FALSE, CREATE_NEW_CONSOLE, NULL, NULL, &cif, &pi);
    return 0;
}

#include <iostream>
#include <Windows.h>
 
int main()
{
    STARTUPINFO sinf;
    PROCESS_INFORMATION pi;
    HWND hWnd = NULL;
 
    ZeroMemory(&sinf, sizeof(STARTUPINFO));
    sinf.lpTitle = L"XX_Console";
    sinf.dwFlags = STARTF_USESHOWWINDOW;
    sinf.wShowWindow = SW_HIDE;
 
    CreateProcess(L"C:\\Windows\\system32\\cmd.exe", NULL, NULL, NULL, FALSE, CREATE_NEW_CONSOLE, NULL, NULL, &sinf, &pi);
 
    Sleep(100);
 
    hWnd = FindWindow(NULL, L"XX_Console");
 
    std::cout << hWnd;
 
    Sleep(500);
    ShowWindow(hWnd, 0);
    Sleep(500);
    ShowWindow(hWnd, 1);
    Sleep(500);
    ShowWindow(hWnd, 0);
    Sleep(500);
    ShowWindow(hWnd, 1);
    Sleep(500);
 
    return 0;
}