karkas

#include <Windows.h>
#include <tchar.h>
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
TCHAR WinName[]=_T("MainFrame");
int APIENTRY WinMain (HINSTANCE This, HINSTANCE Prev, LPSTR cmd, int mode)
{
 HWND hWnd;
 MSG msg;
 WNDCLASS wc;
 wc.hInstance=This;
 wc.lpszClassName=WinName;
 wc.lpfnWndProc=WndProc;
 wc.style= CS_HREDRAW;
 wc.hIcon=LoadIcon(NULL,IDI_APPLICATION);
 wc.hCursor=LoadCursor(NULL,IDC_ARROW);
 wc.lpszMenuName=NULL;
 wc.cbClsExtra=0;
 wc.cbWndExtra=0;
 wc.hbrBackground=(HBRUSH)(COLOR_WINDOW+1);
 if(!RegisterClass(&wc))return 0;
 hWnd= CreateWindow (WinName,
  _T("каркас Windows приложения"),
  WS_OVERLAPPEDWINDOW,
  CW_USEDEFAULT,
  CW_USEDEFAULT,
  CW_USEDEFAULT,
  CW_USEDEFAULT,
  HWND_DESKTOP,
  NULL,
  This,
  NULL);
 ShowWindow(hWnd,mode);
 while(GetMessage(&msg,NULL,0,0))
 {TranslateMessage(&msg);
 DispatchMessage(&msg);
 } return 0;
}
LRESULT CALLBACK WndProc(HWND hWnd, UINT message ,WPARAM wParam, LPARAM lParam)
{
 PAINTSTRUCT ps;
 HDC hdc; int x,y;

 static int sx,sy;
 switch(message)
 {
 case WM_SIZE:{
  sx= LOWORD(lParam);
  sy= HIWORD(lParam);
  break;
     }
 case WM_PAINT:
  hdc=BeginPaint(hWnd,&ps);
  for(x=0;x<sx;x+=sx/10)
  {
   MoveToEx(hdc,x,0,NULL);
   LineTo(hdc,x,sy);
  }
  for(y=0;y<sy;y+=sy/10)
  {
   MoveToEx(hdc,0,y,NULL);
   LineTo(hdc,sx,y);
  }

  MoveToEx(hdc, 0,0,NULL);
  Ellipse(hdc, 200 , 200, 500 , 600);
  LineTo(hdc, sx, sy);

  EndPaint(hWnd,&ps);
  break;
 case WM_DESTROY: PostQuitMessage(0);
  break;
 default:
  return DefWindowProc(hWnd,message,wParam,lParam);
 }
 return 0;
}