VC++ .NETであれば、これでも動くはずです。

#include <windows.h>
typedef double b;b cos(b),sin(b);HDC d;b q=30;L(b r){r=(15-r)/9.55;MoveToEx(d,q
,q,0);LineTo(d,q+q*cos(r),q-q*sin(r));}WinMain(i,p,l,q){MSG m;HWND h;SYSTEMTIME
s;WNDCLASS w={67,DefWindowProc,0,0,i,0,0,0,0,"1"};RegisterClass(&w);h=
CreateWindow("1",0,513<<19,0,0,95,95,0,0,i,0);SetTimer(h,1,99,0);d=GetDC(h);
while(GetMessage(&m,h,0,0)!=-1){if(m.message==275){GetLocalTime(&s);Rectangle(
d,0,0,60,60);L(s.wSecond);L(s.wMinute);L(s.wHour*5);}DispatchMessage(&m);}}