creatfile 有什么东东吗？为什么返回的handle为0xffffffff

creatfile 有什么错误吗？为什么返回的handle为0xffffffff
HANDLE   hAndle   =   CreateFile( "c:\test\test.txt ",   GENERIC_READ|GENERIC_WRITE,
FILE_SHARE_READ|FILE_SHARE_WRITE,NULL,  
OPEN_EXISTING,   FILE_ATTRIBUTE_NORMAL|FILE_ATTRIBUTE_READONLY,NULL);

[解决办法]
HANDLE hAndle = CreateFile( "c:\\test\\test.txt ", GENERIC_READ|GENERIC_WRITE,
FILE_SHARE_READ|FILE_SHARE_WRITE,NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL|FILE_ATTRIBUTE_READONLY,NULL);

=====================================================================
HANDLE hAndle = CreateFile( "c:\test\test.txt ", GENERIC_READ|GENERIC_WRITE,
FILE_SHARE_READ|FILE_SHARE_WRITE,NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL|FILE_ATTRIBUTE_READONLY,NULL);


[解决办法]
"c:\\test\\test.txt "
OPEN_ALWAAYS
okokok