#include <iostream>

int main()
{
   std::cout << "Hello World!\n";
}

#include <windows.h>

int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR szCmdLine, int iCmdShow)
{
   MessageBoxW(NULL, L"Hello World!", L"Hello Message", MB_OK);

   return 0;
}

#include <windows.h>

LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);

int WINAPI wWinMain(_In_      HINSTANCE hInstance,
                    _In_opt_  HINSTANCE hPrevInstance,
                    _In_      PWSTR szCmdLine,
                    _In_      int nWinMode)
{
   static const WCHAR szAppName[] = L"MinWinAPIApp";

   WNDCLASSEXW wc;

   wc.cbSize        = sizeof(WNDCLASSEX);
   wc.style         = CS_HREDRAW | CS_VREDRAW;
   wc.lpfnWndProc   = WndProc;
   wc.cbClsExtra    = 0;
   wc.cbWndExtra    = 0;
   wc.hInstance     = hInstance;
   wc.hIcon         = (HICON)   LoadImageW(NULL, IDI_APPLICATION, IMAGE_ICON, 0, 0, LR_DEFAULTCOLOR);
   wc.hIconSm       = (HICON)   LoadImageW(NULL, IDI_APPLICATION, IMAGE_ICON, 0, 0, LR_DEFAULTCOLOR);
   wc.hCursor       = (HCURSOR) LoadImageW(NULL, IDC_ARROW, IMAGE_CURSOR, 0, 0, LR_SHARED);
   wc.hbrBackground = (HBRUSH)  (COLOR_WINDOW + 1);
   wc.lpszMenuName  = NULL;
   wc.lpszClassName = szAppName;

   if ( 0 == RegisterClassExW(&wc) )
   {
      MessageBoxW(NULL, L"Can't Register the Window Class!", szAppName, MB_OK | MB_ICONERROR);
      return E_FAIL;
   }

   static const WCHAR szAppTitle[] = L"WinAPI Desktop Skeletal Application";

   HWND hwnd = CreateWindowW(szAppName, szAppTitle,
                             WS_OVERLAPPEDWINDOW,
                             CW_USEDEFAULT, CW_USEDEFAULT,
                             CW_USEDEFAULT, CW_USEDEFAULT,
                             NULL, NULL, hInstance, NULL);

   if ( NULL == hwnd )
   {
      MessageBoxW(NULL, L"Unable to Create the Main Window!", szAppName, MB_OK | MB_ICONERROR);
      return E_FAIL;
   }

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

   // enter the main message loop
   MSG msg;

   while ( GetMessageW(&msg, NULL, 0, 0) )
   {
      TranslateMessage(&msg);
      DispatchMessageW(&msg);
   }

   return (int) msg.wParam;
}

LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
   switch ( message )
   {
   case WM_PAINT:
      HDC         hdc;
      PAINTSTRUCT ps;
      hdc = BeginPaint(hwnd, &ps);

      RECT rect;
      GetClientRect(hwnd, &rect);
      DrawTextW(hdc, L"Hello, Modern Windows!", -1, &rect, DT_SINGLELINE | DT_CENTER | DT_VCENTER);

      EndPaint(hwnd, &ps);
      return S_OK;

   case WM_DESTROY:
      PostQuitMessage(0);
      return S_OK;
   }

   return DefWindowProcW(hwnd, message, wParam, lParam);
}

#pragma once

// compile for Windows 7 or higher
// #define WINVER       0x0601
// #define _WIN32_WINNT 0x0601

// compiling for Windows 10 (recommended)
// if you want to compile for Win 11 use the Win 11 versions
// I have no need for those, I am Win 10
#define WINVER       0x0A00
#define _WIN32_WINNT 0x0A00

#include <afxwin.h>

// application class
class CTheApp : public CWinApp
{
public:
   BOOL InitInstance();
};

// main window class
class CMainWnd : public CFrameWnd
{
public:
   CMainWnd();

protected:
   afx_msg void OnPaint();

   DECLARE_MESSAGE_MAP()
};

#include "MFC_APP.hpp"

// construct a window
CMainWnd::CMainWnd()
{
   Create(NULL, L"An MFC Application Skeleton");
}

// initalize the application
BOOL CTheApp::InitInstance()
{
   m_pMainWnd = new CMainWnd;

   m_pMainWnd->ShowWindow(m_nCmdShow);
   m_pMainWnd->UpdateWindow();

   return TRUE;
}

// application's message map
BEGIN_MESSAGE_MAP(CMainWnd, CFrameWnd)
   ON_WM_PAINT()
END_MESSAGE_MAP()

// draw some text centered in the client area
void CMainWnd::OnPaint()
{
   CRect    rect;

   GetClientRect(&rect);

   CPaintDC dc(this);

   dc.DrawTextW(L"Hello, MFC!", -1, &rect, DT_SINGLELINE | DT_CENTER | DT_VCENTER);
}

// instantiate the application
CTheApp  theApp;