How to open a file using openfile() method...

[asenthil]

Hai...

i'm triying to open a file in read mode using the following method..

HFILE hFile;
hFile=OpenFile("D:\ss.doc",lpReOpenBuff,OF_READ);

i cant undestand what is the 2nd parameter is...

the syntax for openfile is

HFILE OpenFile(LPCSTR lpFileName,LPOFSTRUCT lpReOpenBuff,UINT uStyle);


plzz tell me what shall i put for lpReOpenBuff..

senthil.

[sunburnt]

msdn says:

lpReOpenBuff
[out] A pointer to the OFSTRUCT structure that receives information about a file when it is first opened.

The structure can be used in subsequent calls to the OpenFile function to see an open file.

The OFSTRUCT structure contains a pathname string member with a length that is limited to OFS_MAXPATHNAME characters, which is currently 128 characters. Because of this, you cannot use the OpenFile function to open a file with a path length that exceeds 128 characters. The CreateFile function does not have a path length limitation.

I suggest:

OFSTRUCT ofs;

memset(&ofs, 0, sizeof(OFSTRUCT));

OpenFile("D:\ss.doc",&ofs,OF_READ);

when the call returns, the structure will be filled in with information about the file you chose to open. See the MSDN link for more information.

[asenthil]

Hai sun,
thanks for ur reply...

ur help works supervly...

Now i want to open two files, one in read mode and the another in write mode..

and i want to read the contents of the read mode file and write it into the

write mode file...

i had tried the following method...

HANDLE hFile,hFile1;
DWORD wmWritten; 
HFILE op,op1;
OFSTRUCT ofs;

memset(&ofs, 0, sizeof(OFSTRUCT));
op=OpenFile("C:\\tab.doc",&ofs,OF_READ);            
hFile = CreateFile(_T("C:\\text.doc"),GENERIC_READ|GENERIC_WRITE,        FILE_SHARE_READ,NULL,OPEN_ALWAYS,FILE_ATTRIBUTE_NORMAL,NULL); 
op1=OpenFile("C:\\text.doc",&ofs,OF_WRITE);  

while(op!=EOF)
{
ReadFile(op,lpBuffer,(DWORD)(strlen(lpBuffer)),&wmWritten,NULL);
WriteFile(op1,lpBuffer,(DWORD)(strlen(lpBuffer)),&wmWritten,NULL);
}

Here i dont know the parameter lpBuffer...
Shall i put the path or anything?

Can u plzz explain me how to read the contents of one file and write into
another file...

is the above method enough for this process..
thanks...
senthil.

[CornedBee]

Don't use OpenFile. It's Win16 legacy. Only use CreateFile.

lpBuffer is just a memory buffer. A char array, for example.

But don't do all this at all. To copy a file, you use the CopyFile API. You don't implement it yourself.