#include <windows.h> 



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



int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, 

                   PSTR szCmdLine, int iCmdShow) 

{ 

   static TCHAR szAppName[] = TEXT ("Klassenname"); 

   HWND         hWnd; 

   MSG          msg; 

   WNDCLASSEX   wndclassex; 



   wndclassex.cbSize        = sizeof(WNDCLASSEX); 

   wndclassex.style         = CS_HREDRAW | CS_VREDRAW; 

   wndclassex.lpfnWndProc   = &WndProc; 

   wndclassex.cbClsExtra    = 0; 

   wndclassex.cbWndExtra    = 0; 

   wndclassex.hInstance     = hInstance; 

   wndclassex.hIcon         = LoadIcon (NULL, IDI_APPLICATION); 

   wndclassex.hCursor       = LoadCursor (NULL, IDC_ARROW); 

   wndclassex.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH); 

   wndclassex.lpszMenuName  = NULL; 

   wndclassex.lpszClassName = szAppName; 

   wndclassex.hIconSm       = wndclassex.hIcon; 



   if(!RegisterClassEx(&wndclassex)) 

   { 

      MessageBox (NULL, TEXT ("RegisterClassEx fehlgeschlagen!"), 

                  szAppName, MB_OK | MB_ICONERROR); 

      return -1; 

   } 



   hWnd = CreateWindowEx(WS_EX_OVERLAPPEDWINDOW, // erweiterter Fensterstil 

                  szAppName, // Name der Fensterklasse 

                  TEXT ("Fenstertitel"), // Fenstertitel 

                  WS_OVERLAPPEDWINDOW, // Fensterstil 

                  CW_USEDEFAULT, // X-Position des Fensters 

                  CW_USEDEFAULT, // Y-Position des Fensters 

                  CW_USEDEFAULT, // Fensterbreite 

                  CW_USEDEFAULT, // Fensterhöhe 

                  NULL, // übergeordnetes Fenster 

                  NULL, // Menü 

                  hInstance, // Programm-Kopiezähler (Programm-ID) 

                  NULL); // zusätzliche Parameter 



   ShowWindow(hWnd, iCmdShow); 

   UpdateWindow(hWnd); 



   while(GetMessage(&msg, NULL, 0, 0)) 

   { 

      TranslateMessage (&msg); 

      DispatchMessage (&msg); 

   } 



   UnregisterClass(szAppName, hInstance); 



   return (int) msg.wParam; 

} 



// Die Hauptnachrichtenschleife  

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) 

{ 

   HDC hdc; 

   PAINTSTRUCT ps; 



   switch(message) 

   { 

   case WM_PAINT: 

       hdc = BeginPaint(hWnd, &ps); 

       TextOut(hdc, 0, 0, TEXT("Hello World!"), 12); 

       EndPaint(hWnd, &ps); 

       return 0; 



   case WM_CLOSE: 

       DestroyWindow(hWnd); 

       break; 



   case WM_DESTROY: 

       PostQuitMessage(0); 

       return 0; 

   } 



   return DefWindowProc(hWnd, message, wParam, lParam); 

}