给你的程序加一个美美的

      SendMessage(hwnd, WM_SETICON, ICON_BIG,  (LPARAM) 
      LoadIcon((HINSTANCE) GetWindowLongPtr(hwnd, GWLP_HINSTANCE), 
      MAKEINTRESOURCE(IDI_ICON1)));
      SendMessage(hwnd, WM_SETICON, ICON_SMALL, (LPARAM) 
      LoadIcon((HINSTANCE) GetWindowLongPtr(hwnd, GWLP_HINSTANCE), 
      MAKEINTRESOURCE(IDI_ICON1)));