对面的大神看过来~怎么在置顶窗口上动态加载置顶图片（必须支持jpg,png,bmp），求具体。用的是VC++6.0。

IPicture *m_picture;

OLE_XSIZE_HIMETRIC m_width;
OLE_YSIZE_HIMETRIC m_height;

CString m_filename(cFilePath);//读取的文件名

CFile m_file(m_filename,CFile::modeRead );

//获取文件长度
DWORD m_filelen = m_file.GetLength();

//在堆上分配空间
HGLOBAL m_hglobal = GlobalAlloc(GMEM_MOVEABLE,m_filelen);

LPVOID pvdata = NULL;
//锁定堆空间,获取指向堆空间的指针
pvdata = GlobalLock(m_hglobal);

//将文件数据读区到堆中
m_file.Read(pvdata,m_filelen);

IStream* m_stream;

GlobalUnlock(m_hglobal);

//在堆中创建流对象
CreateStreamOnHGlobal(m_hglobal,TRUE,&m_stream);

//利用流加载图像
OleLoadPicture(m_stream,m_filelen,TRUE,IID_IPicture,(LPVOID*)&m_picture);

m_picture->get_Width(&m_width);
m_picture->get_Height(&m_height);

CDC* dc = GetDC();

//在控件范围显示图片
CRect rect;
GetDlgItem(IDC_STATIC_SD_PREVIEW)-> GetWindowRect(&rect);
ScreenToClient(&rect);

m_picture->Render(*dc,rect.left,rect.top,rect.Width(),rect.Height(),0,m_height,m_width,-m_height,NULL);
m_picture->Release();