#include <Windows.h>
#include <string.h>
#include <stdio.h>

LRESULT CALLBACK WindowFunc(HWND, UINT, WPARAM, LPARAM);
    char str[255]="";
    int WINAPI WinMain(HINSTANCE hThisInst, HINSTANCE hPrevInst, LPSTR lpszArgs, int nWinMode)
{
    HWND hwnd;
    HWND child;
    MSG msg;
    WNDCLASSEX wcl;
    WNDCLASSEX cld;

    wcl.hInstance= hThisInst;
    wcl.lpszClassName= L"MyWin";
    wcl.lpfnWndProc= WindowFunc;
    wcl.style= 0;
    wcl.cbSize= sizeof(WNDCLASSEX);
    wcl.hIcon= LoadIcon(NULL, IDI_APPLICATION);
    wcl.hIconSm= LoadIcon(NULL, IDI_WINLOGO);
    wcl.hCursor= LoadCursor(NULL, IDC_ARROW);
    wcl.lpszMenuName= NULL;
    wcl.cbClsExtra= 0;
    wcl.cbWndExtra=0;
    wcl.hbrBackground= (HBRUSH)GetStockObject(BLACK_BRUSH);

    cld.hInstance= hThisInst;
    cld.lpszClassName= L"MyChild";
    cld.lpfnWndProc= WindowFunc;
    cld.style= 0;
    cld.cbSize= sizeof(WNDCLASSEX);
    cld.hIcon= LoadIcon(NULL, IDI_APPLICATION);
    cld.hIconSm= LoadIcon(NULL, IDI_WINLOGO);
    cld.hCursor= LoadCursor(NULL, IDC_ARROW);
    cld.lpszMenuName= NULL;
    cld.cbClsExtra= 0;
    cld.cbWndExtra=0;
    cld.hbrBackground= (HBRUSH)GetStockObject(BLACK_BRUSH);



    if(!RegisterClassEx(&wcl)) return 0;
    hwnd= CreateWindow (L"MyWin",
        L"533",
        WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT,
        CW_USEDEFAULT,
        CW_USEDEFAULT,
        CW_USEDEFAULT,
        HWND_DESKTOP,
        NULL,
        hThisInst,
        NULL
        );

    if(!RegisterClassEx(&wcl)) return 0;
    child= CreateWindow (L"MyWin",
        L"234",
        WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT,
        CW_USEDEFAULT,
        100,
        100,
        hwnd,
        NULL,
        hThisInst,
        NULL
        );

    ShowWindow(hwnd, nWinMode);
    UpdateWindow(hwnd);

    while(GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }return msg.wParam;
}

LRESULT CALLBACK WindowFunc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    HDC hdc;
    switch (message)
    {
    case WM_CHAR:
        break;
    case WM_LBUTTONDOWN:
        break;
    case WM_RBUTTONDOWN:
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;

    default:
        return DefWindowProc(hwnd, message, wParam, lParam);
    }
    return 0;
    }