progress indicator control

[zigular]

hello!

i want to connect the reading of a file with a progress indicator (MFC common control).

the initializing of the indicator i've already done, but now i need something like the spezific size of the file or sth like that to define my "status counter".

which possibilities do i have to realise that? i looked through the methods of [ifstream] and [CFileDialog].. but couldn't find sth helpfully.

thanks h.

 

[ronnyjljr]

You could always do a line count of the file, depending on how large it is though and set the progress bar range. Sometimes in my project I need to loops through the same files several times so I just count the number of lines.

Hope than helps a little,
Ron

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[IonelBurtan]

The only reasonable way I know is to use Windows ReadFileEx API call which has a parameter that you can initialize with a completition routine function:

BOOL ReadFileEx(
HANDLE hFile, // handle of file to read
LPVOID lpBuffer, // pointer to buffer
DWORD nNumberOfBytesToRead, // number of bytes to read
LPOVERLAPPED lpOverlapped, // pointer to offset
LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine
// pointer to completion routine
);

Check out also the following sample from MSDN which uses this function:
"Remote: Demonstrates a Client-Server Connection"

HTH,

s-)

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