//m_pic是自己的图象类的一个对象
CFile f;
CString FilePathName;
CFileException e; CFileDialog dlg(TRUE,NULL,NULL,0,"jpg Files (*.jpg)|*.jpg||",this);///TRUE为OPEN对话框,FALSE为SAVE AS对话框
if(dlg.DoModal()==IDOK)
{
FilePathName=dlg.GetPathName();
if(m_Pic.m_IPicture != NULL) m_Pic.FreePictureData(); // Important - Avoid Leaks... if(f.Open(FilePathName, CFile::modeRead | CFile::typeBinary, &e)) //打开了一个jpg文件
{ int nSize = f.GetLength(); //先得到jpg文件长度
BYTE * pBuffer = new BYTE [nSize]; //按文件的大小在堆上申请一块内存
if (f.Read(pBuffer, nSize) > 0 ) //把jpg文件读到pBuffer(堆上申请一块内存)
{ // +----------------------------------------------
BYTE *pBuf = pBuffer; ///下面这一大段是把pBuffer里的jpg数据放到库中
VARIANT varBLOB;
SAFEARRAY *psa;
SAFEARRAYBOUND rgsabound[1];
if(!m_pRecordset->Supports(adAddNew))return;
m_pRecordset->AddNew();
if(pBuf)
{
rgsabound[0].lLbound = 0;
rgsabound[0].cElements = nSize;
psa = SafeArrayCreate(VT_UI1, 1, rgsabound);
for (long i = 0; i < (long)nSize; i++)
SafeArrayPutElement (psa, &i, pBuf++);
varBLOB.vt = VT_ARRAY | VT_UI1;
varBLOB.parray = psa;
m_pRecordset->GetFields()->GetItem("image")->AppendChunk(varBLOB);
}
m_pRecordset->Update();
// +----------------------------------------------
(m_Pic.LoadPictureData(pBuffer, nSize));//接作调用函数读pBuffer的jpg数据准备显示
delete [] pBuffer; //删掉堆上申请的那一块内存
pBuf=0; //以防二次乱用
}
f.Close();
AfxMessageBox("添加成功!");
}
}
CFile f;
CString FilePathName;
CFileException e; CFileDialog dlg(TRUE,NULL,NULL,0,"jpg Files (*.jpg)|*.jpg||",this);///TRUE为OPEN对话框,FALSE为SAVE AS对话框
if(dlg.DoModal()==IDOK)
{
FilePathName=dlg.GetPathName();
if(m_Pic.m_IPicture != NULL) m_Pic.FreePictureData(); // Important - Avoid Leaks... if(f.Open(FilePathName, CFile::modeRead | CFile::typeBinary, &e)) //打开了一个jpg文件
{ int nSize = f.GetLength(); //先得到jpg文件长度
BYTE * pBuffer = new BYTE [nSize]; //按文件的大小在堆上申请一块内存
if (f.Read(pBuffer, nSize) > 0 ) //把jpg文件读到pBuffer(堆上申请一块内存)
{ // +----------------------------------------------
BYTE *pBuf = pBuffer; ///下面这一大段是把pBuffer里的jpg数据放到库中
VARIANT varBLOB;
SAFEARRAY *psa;
SAFEARRAYBOUND rgsabound[1];
if(!m_pRecordset->Supports(adAddNew))return;
m_pRecordset->AddNew();
if(pBuf)
{
rgsabound[0].lLbound = 0;
rgsabound[0].cElements = nSize;
psa = SafeArrayCreate(VT_UI1, 1, rgsabound);
for (long i = 0; i < (long)nSize; i++)
SafeArrayPutElement (psa, &i, pBuf++);
varBLOB.vt = VT_ARRAY | VT_UI1;
varBLOB.parray = psa;
m_pRecordset->GetFields()->GetItem("image")->AppendChunk(varBLOB);
}
m_pRecordset->Update();
// +----------------------------------------------
(m_Pic.LoadPictureData(pBuffer, nSize));//接作调用函数读pBuffer的jpg数据准备显示
delete [] pBuffer; //删掉堆上申请的那一块内存
pBuf=0; //以防二次乱用
}
f.Close();
AfxMessageBox("添加成功!");
}
}
解决方案 »
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