|
= (pst->wHour * 30) % 360 + pst->wMinute / 2 ;
iAngle[1] = pst->wMinute * 6 ;
iAngle[2] = pst->wSecond * 6 ;
memcpy (ptTemp, pt, sizeof (pt)) ;
for (i = fChange 0 : 2 ; i < 3 ; i++)
{
RotatePoint (ptTemp[i], 5, iAngle[i]) ;
Polyline (hdc, ptTemp[i], 5) ;
}
}
LRESULT CALLBACK WndProc ( HWND hwnd, UINT message, WPARAM wParam,LPARAM lParam)
{
static int cxClient, cyClient ;
static SYSTEMTIME stPrevious ;
BOOL fChange ;
HDC hdc ;
PAINTSTRUCT ps ;
SYSTEMTIME st ;
switch (message)
{
case WM_CREATE :
SetTimer (hwnd, ID_TIMER, 1000, NULL) ;
GetLocalTime (&st) ;
stPrevious = st ;
return 0 ;
case WM_SIZE :
cxClient = LOWORD (lParam) ;
cyClient = HIWORD (lParam) ;
return 0 ;
case WM_TIMER :
GetLocalTime (&st) ;
fChange = st.wHour ! = stPrevious.wHour ||
st.wMinute ! = stPrevious.wMinute ;
hdc = GetDC (hwnd) ;
SetIsotropic (hdc, cxClient, cyClient) ;
SelectObject (hdc, GetStockObject (WHITE_PEN)) ;
DrawHands (hdc, &stPrevious, fChange) ;
SelectObject (hdc, GetStockObject (BLACK_PEN)) ;
DrawHands (hdc, &st, TRUE) ;
ReleaseDC (hwnd, hdc) ;
stPrevious = st ;
|