char *m_char;//图片文件指针
DWORD m_nFileLen;//图片长度
然后在函数中写入：
CFileDialog dlg(TRUE,NULL,NULL,0,"photo Files (*.jpg;*.bmp)|*.jpg;*.bmp|",this);if(IDOK==dlg.DoModal())
{m_path=dlg.GetPathName();m_bool=true;
}CWnd *pWnd = GetDlgItem(IDC_PICTURE); CRect rect; pWnd->GetClientRect(&rect); CDC *pDC = pWnd->GetDC(); CFileStatus fstatus; CFile file; LONG cb; BOOL m_tm=false;IPicture *pPic; CString m_sPath; if (file.Open(m_path,CFile::modeRead)&& file.GetStatus(m_path,fstatus)&&((cb = fstatus.m_size) != -1))   {if(cb>1048576)   //可在此设置图片大小
   {m_tm=false;MessageBox("图片不能大于1M","提示!");}else{m_nFileLen=(UINT)cb;        HGLOBAL hGlobal = GlobalAlloc(GMEM_MOVEABLE, cb); LPVOID pvData = NULL; if (hGlobal != NULL) { if ((pvData = GlobalLock(hGlobal)) != NULL) { file.ReadHuge(pvData, cb); m_char=(char*)pvData;GlobalUnlock(hGlobal); CreateStreamOnHGlobal(hGlobal, TRUE, &pStm); m_tm=true;// m_bool=true;
     } elseAfxMessageBox("不是图片文件!");} elseAfxMessageBox("申请内存失败!");}}  elseAfxMessageBox("不是图片文件!");if(m_tm) { SUCCEEDED(OleLoadPicture(pStm,fstatus.m_size,TRUE,IID_IPicture,(LPVOID*)&pPic));OLE_XSIZE_HIMETRIC hmWidth; OLE_YSIZE_HIMETRIC hmHeight; pPic->get_Width(&hmWidth); pPic->get_Height(&hmHeight);   if(FAILED(pPic->Render(*pDC,0,0,rect.Width(),rect.Height(),0,hmHeight,hmWidth,-hmHeight,NULL))) AfxMessageBox("渲染图像失败！"); pPic->Release(); }
这里还有个小小的问题,就是当窗口出现重画的时候图片就会消失,可以把上面的代码加入到OnPaint函数中去;
接来就是保存文件(怎么访问数据库的可以去看下我空间里的"用ADO访问数据库"):
在Access数据库中把要放相片字段的类型改为OLE 类型(在SQL数据库改成相片类型).
m_RecordSet->AddNew();
char   *pBuf = m_char;//把图片的指针传给pBuf
   VARIANT   varBLOB;SAFEARRAY   *psa;SAFEARRAYBOUND rgsabound[1];if(pBuf){    rgsabound[0].lLbound = 0;rgsabound[0].cElements = m_nFileLen;psa = SafeArrayCreate(VT_UI1, 1, rgsabound);for (long i = 0; i < (long)m_nFileLen; i++)SafeArrayPutElement (psa, &i, pBuf++);varBLOB.vt = VT_ARRAY | VT_UI1;varBLOB.parray = psa;m_pRecordset->GetFields()->GetItem("读者相片")->AppendChunk(varBLOB);      }m_pRecordset->Update();

IStream *pStm; long lDataSize = m_pRecordset->GetFields()->GetItem("读者相片")->ActualSize;if(lDataSize > 0){ _variant_t varBLOB;  varBLOB = theApp.m_data.m_pRecordset->GetFields()->GetItem("读者相片")->GetChunk(lDataSize);   if(varBLOB.vt == (VT_ARRAY | VT_UI1)){char *pBuf = NULL;SafeArrayAccessData(varBLOB.parray,(void **)&pBuf);HGLOBAL hGlobal = GlobalAlloc(GMEM_MOVEABLE, lDataSize); LPVOID pvData = NULL; if (hGlobal != NULL) { if ((pvData = GlobalLock(hGlobal)) != NULL) { memcpy(pvData,pBuf,lDataSize);SafeArrayUnaccessData (varBLOB.parray);GlobalUnlock(hGlobal); CreateStreamOnHGlobal(hGlobal, TRUE, &pStm); } elseAfxMessageBox("加载图片失败!");} elseAfxMessageBox("申请内存失败!");}CWnd *pWnd = GetDlgItem(IDC_PICTURE); CRect rect; pWnd->GetClientRect(&rect); CDC *pDC = pWnd->GetDC(); IPicture *pPic; if(SUCCEEDED(OleLoadPicture(pStm,lDataSize,TRUE,IID_IPicture,(LPVOID*)&pPic))) { OLE_XSIZE_HIMETRIC hmWidth;    OLE_YSIZE_HIMETRIC hmHeight; pPic->get_Width(&hmWidth); pPic->get_Height(&hmHeight);    if(FAILED(pPic->Render(*pDC,0,0,rect.Width(),rect.Height(),0,hmHeight,hmWidth,-hmHeight,NULL))) AfxMessageBox("渲染图像失败！"); pPic->Release(); }}

  CoInitialize(NULL);_ConnectionPtr m_pConnect;try{// 创建Connection对象m_pConnect.CreateInstance("ADODB.Connection");// 设置连接字符串，必须是BSTR型或者_bstr_t类型_bstr_t strConnect = "Provider=SQLOLEDB.1;Password=111111;Persist Security Info=True;User ID=sa;Initial Catalog=Picture;Data Source=SHOWFLY\\SQL2005";m_pConnect->Open(strConnect,"","",adModeUnknown);}// 捕捉异常catch(_com_error e){// 显示错误信息AfxMessageBox(e.Description());}CFile   fileAdd;if(fileAdd.Open("F:/20087610203.JPG",CFile::modeRead)==0)    //打开文件return;_variant_t   varChunk;long   m_nFileLen   =   fileAdd.GetLength();BYTE*   m_pBMPBuffer;m_pBMPBuffer = new BYTE[m_nFileLen];if(m_pBMPBuffer==NULL)return;fileAdd.Read(m_pBMPBuffer,m_nFileLen);
//向数据库添加图片_RecordsetPtr m_pRecordset;m_pRecordset.CreateInstance(__uuidof(Recordset));try{m_pRecordset->Open(_variant_t("dbo.userphoto"),_variant_t((IDispatch*)m_pConnect,true),adOpenKeyset,adLockOptimistic,adCmdTable);}catch(_com_error &e){::MessageBox(NULL,"无法打开userphoto表！","提示",MB_OK|MB_ICONWARNING);}char        *pBuf = (char*)m_pBMPBuffer;VARIANT              varBLOB;SAFEARRAY  *psa;SAFEARRAYBOUND    rgsabound[1];m_pRecordset->AddNew();                                              ///添加新记录m_pRecordset->PutCollect("username",_variant_t("小李"));             ///为新记录填充username字段m_pRecordset->PutCollect("old",_variant_t((long)28));                 ///填充old字段if(pBuf){rgsabound[0].lLbound = 0;rgsabound[0].cElements = m_nFileLen;psa = SafeArrayCreate(VT_UI1, 1, rgsabound);                      ///创建SAFEARRAY对象for (long i = 0; i < (long)m_nFileLen; i++)SafeArrayPutElement (psa, &i, pBuf++);                         ///将pBuf指向的二进制数据保存到SAFEARRAY对象psa中varBLOB.vt = VT_ARRAY | VT_UI1;                                   ///将varBLOB的类型设置为BYTE类型的数组varBLOB.parray = psa;                                             ///为varBLOB变量赋值m_pRecordset->GetFields()->GetItem("photo")->AppendChunk(varBLOB);///加入BLOB类型的数据}m_pRecordset->Update();                                              ///保存我们的数据到库中

//从数据库读出图片long   lDataLength = m_pRecordset->GetFields()->GetItem(_variant_t("photo"))->ActualSize;if (lDataLength>0){_variant_t   varBLOB;varBLOB=m_pRecordset->GetFields()->GetItem(_variant_t("photo"))->GetChunk(lDataLength);if(varBLOB.vt== (VT_ARRAY|VT_UI1) && varBLOB.vt!=VT_EMPTY && varBLOB.vt!=VT_NULL ){BYTE *pBuf = NULL;pBuf = (BYTE*)GlobalAlloc(GMEM_FIXED,lDataLength);SafeArrayAccessData(varBLOB.parray,(void   **)&pBuf);CFile   outFile("D:/20087610203.bmp",CFile::modeCreate|CFile::modeWrite); //构造新文件，如果文件存在，则长度变为0outFile.Write(pBuf,lDataLength);outFile.Close();SafeArrayUnaccessData (varBLOB.parray);}}m_pRecordset->Close();m_pConnect->Close();::CoUninitialize();