Создание ОБЫЧНОГО окна!

#include <windows.h>
 
LRESULT CALLBACK WinFunc(HWND,UINT,WPARAM,LPARAM);
 
#define CLASS_NAME  "MyWindow"
char szWinName[] =  "MyWindow";
 
int WINAPI WinMain(HINSTANCE hThisInstance, HINSTANCE hPrevInstance, LPSTR lpszArgs, int nWinMode)
{
    MSG msg;
    WNDCLASSEX wcl;
    HWND hWnd;
    ZeroMemory(&wcl,sizeof(wcl));
    wcl.cbSize = sizeof(wcl);
    wcl.hInstance = hThisInstance;
    wcl.lpszClassName = (LPCWSTR)szWinName;
    wcl.lpfnWndProc = WinFunc;
    wcl.hIcon = LoadIcon(NULL,IDI_APPLICATION);
    wcl.hCursor = LoadCursor(NULL,IDC_ARROW);
    wcl.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
    if (!RegisterClassEx(&wcl)) return 0;
    hWnd = CreateWindow((LPCWSTR)szWinName,(LPCWSTR)"HI!!!",WS_OVERLAPPEDWINDOW, 10,10,320,240,HWND_DESKTOP, NULL, hThisInstance, NULL);
    ShowWindow(hWnd,nWinMode);
    while (GetMessage(&msg,NULL,0,0))
    {
        DispatchMessage(&msg);
    }
    return 0;
}
 
LRESULT CALLBACK WinFunc(HWND hWnd, UINT message,WPARAM wParam, LPARAM lParam)
{
    switch (message)
    {
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        DefWindowProc(hWnd,message,wParam,lParam);
    }
    return 0;
}