CAtlTemporaryFile::CAtlTemporaryFile

建構函式。

CAtlTemporaryFile( ) throw( );

備註

實際上不會開啟檔案，直到呼叫 CAtlTemporaryFile::Create。

範例

// Declare the temporary file object
CAtlTemporaryFile myTempFile;

// Create the temporary file, without caring where it 
// will be created, but with both read and write access.
ATLVERIFY (myTempFile.Create(NULL, GENERIC_READ|GENERIC_WRITE) == S_OK);

// Create some data to write to the file 

int nBuffer[100];
DWORD bytes_written = 0, bytes_read = 0;
int i;

for (i = 0; i < 100; i++)
   nBuffer[i] = i;

// Write some data to the file
myTempFile.Write(&nBuffer, sizeof(nBuffer), &bytes_written);

// Confirm it was written ok
ATLASSERT(bytes_written == sizeof(nBuffer));

// Flush the data to disk
ATLVERIFY(myTempFile.Flush() == S_OK);

// Reset the file pointer to the beginning of the file
ATLVERIFY(myTempFile.Seek(0, FILE_BEGIN) == S_OK);

// Read in the data
myTempFile.Read(&nBuffer, sizeof(nBuffer), bytes_read);

// Confirm it was read ok
ATLASSERT(bytes_read == sizeof(nBuffer));

// Close the file, making a copy of it at another location
ATLVERIFY(myTempFile.Close(_T("c:\\temp\\mydata.tmp")) == S_OK);

需求

Header: atlfile.h

請參閱

參考

CAtlTemporaryFile Class

CAtlTemporaryFile::~CAtlTemporaryFile