利用上篇的文章《Windows Mobile上实现图片任意角度旋转》，可以实现效果非常绚丽的始终效果。每个始终我们需要三张图片，钟盘、时针、分针三张png图片。

如下图：

图片是从android中取出的。

实现代码如下：

void DrawClock(HDC hdc, RECT rc) 
{ 
    SYSTEMTIME systemTime; 
 
    GetLocalTime(&systemTime); 
 
    IImage *pCurClockHour = NULL; 
    IImage *pCurClockMin = NULL; 
    ImageInfo imDialInfo; 
    ImageInfo imHourInfo; 
    ImageInfo imMinInfo; 
 
    LPBYTE  pHourBuf = NULL; 
    LPBYTE  pMinBuf = NULL; 
    POINT ptClockCenter; 
    RECT  rcDial; 
    RECT  rcHour; 
    RECT  rcMin; 
 
    GetClientRect(g_hWnd, &rc); 
 
 
    HDC hdcOffSet = CreateCompatibleDC(hdc); 
    HBITMAP hbmpOffset = CreateCompatibleBitmap(hdc,
 rc.right - rc.left, rc.bottom - rc.top); 
    SelectObject(hdcOffSet, hbmpOffset); 
    FillRect(hdcOffSet, &rc, (HBRUSH)GetStockObject(WHITE_BRUSH)); 
    // Load the image from the JPG file. 
     
    if(pClockDial == NULL) 
pImgFactory->CreateImageFromFile(TEXT("\\clockgoog_dial.png"),&pClockDial); 
    if(pClockHour == NULL) 
pImgFactory->CreateImageFromFile(TEXT("\\clockgoog_hour.png"),&pClockHour); 
    if(pClockMin == NULL) 
pImgFactory->CreateImageFromFile(TEXT("\\clockgoog_minute.png"),&pClockMin); 
 
    /* 
    if(pClockDial == NULL) 
pImgFactory->CreateImageFromFile(TEXT("\\clockdroid2_dial.png"),&pClockDial); 
    if(pClockHour == NULL) 
pImgFactory->CreateImageFromFile(TEXT("\\clockdroid2_hour.png"),&pClockHour); 
    if(pClockMin == NULL) 
pImgFactory->CreateImageFromFile(TEXT("\\clockdroid2_minute.png"),&pClockMin); 
    */ 
    pClockDial->GetImageInfo(&imDialInfo); 
    rcDial.left = ((rc.right - rc.left) - imDialInfo.Width)/2 + rc.left; 
    rcDial.top = ((rc.bottom - rc.top) - imDialInfo.Height)/2 + rc.top; 
    rcDial.right = rcDial.left + imDialInfo.Width; 
    rcDial.bottom = rcDial.top + imDialInfo.Height; 
 
    ptClockCenter.x = rcDial.left + imDialInfo.Width/2; 
    ptClockCenter.y = rcDial.top + imDialInfo.Height/2; 
 
    RotateImage(pImgFactory, pClockHour, pCurClockHour,
 pHourBuf, systemTime.wHour * 6 *3.14/180); 
    RotateImage(pImgFactory, pClockMin, pCurClockMin,
 pMinBuf, (systemTime.wMinute * 6 + systemTime.wSecond/10) *3.14/180); 
     
    pCurClockHour->GetImageInfo(&imHourInfo); 
    pCurClockMin->GetImageInfo(&imMinInfo); 
     
    rcHour.left = ptClockCenter.x - imHourInfo.Width/2; 
    rcHour.right = rcHour.left + imHourInfo.Width; 
    rcHour.top = ptClockCenter.y - imHourInfo.Height/2; 
    rcHour.bottom = rcHour.top + imHourInfo.Height; 
 
    rcMin.left = ptClockCenter.x - imMinInfo.Width/2; 
    rcMin.right = rcMin.left + imMinInfo.Width; 
    rcMin.top = ptClockCenter.y - imMinInfo.Height/2; 
    rcMin.bottom = rcMin.top + imMinInfo.Height; 
     
    pClockDial->Draw(hdcOffSet, &rcDial, NULL); 
    pCurClockHour->Draw(hdcOffSet, &rcHour, NULL); 
    pCurClockMin->Draw(hdcOffSet, &rcMin, NULL); 
 
    pCurClockHour->Release(); 
    pCurClockMin->Release(); 
     
    delete  pHourBuf; 
    delete  pMinBuf; 
    BitBlt(hdc, rc.left,rc.top, rc.right-rc.left,
 rc.bottom - rc.left, hdcOffSet, 0,0,SRCCOPY); 
 
    DeleteDC(hdcOffSet); 
    DeleteObject(hbmpOffset); 
} 

最终效果：