file cpoy

[yym314]

for( int i=0; i<5; i++ )
{
if( !::CopyFile( "d:\\test_copy.txt", "d:\\___HELLO\\test_copy.txt", TRUE ) )
cerr<<"Copy test_copy.txt file failed\t"<< i << endl;
else
cout<<"Copy test_copy.txt file ok\t"<< i << endl;
}


when do the first copy, it is ok. but others failed
why?

[bcpl]

BOOL CopyFile(
LPCTSTR lpExistingFileName, // name of an existing file
LPCTSTR lpNewFileName, // name of new file
BOOL bFailIfExists // operation if file exists
);

Parameters
.
.
.
bFailIfExists
[in] Specifies how this operation is to proceed if a file of the same name as that specified by lpNewFileName already exists. If this parameter is TRUE and the new file already exists, the function fails. If this parameter is FALSE and the new file already exists, the function overwrites the existing file and succeeds.

[topwork]

最后一个参数你填写的是TRUE；意思就是在目标文件存在的时候改函数失败，因此要填写FALSE就可以了；
Specifies how this operation is to proceed if a file of the same name as that specified by lpNewFileName already exists. If this parameter is TRUE and the new file already exists, the function fails. If this parameter is FALSE and the new file already exists, the function overwrites the existing file and succeeds.

[zhucde]

呵呵,看最后一个参数

[yym314]

ok
thanks
but if you chang the last paremeter to "FALSE", it still failed?
why?