CAtlTemporaryFile::CAtlTemporaryFile
更新 : 2007 年 11 月
コンストラクタです。
CAtlTemporaryFile( ) throw( );
解説
CAtlTemporaryFile::Create を呼び出すまでは、ファイルは開かれません。
使用例
// 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);
必要条件
ヘッダー : atlfile.h
参照
参照
CAtlTemporaryFile::~CAtlTemporaryFile