Need help for developing an application

Hi all!
Here is the overview of the application I am trying to develop:
Platform: Windows XP, Visual C++ 6
Application type: MFC
Features: Read a file sector by sector ( 2048 bytes) and display it in a tree view.

Here are the problems I am facing:
1. If I try to read a file which size is bigger than 1 GB, the program uses 100% of the CPU memory and then crashes

2. When the program is reading a file, I want to display a Progress Bar in a new dialog. Using CDialog->DoModal, the dialog does pop up, but the progress bar doesnt work.

Possible problem: When reading a file, I use a loop. Maybe the program stays in that loop too long leading it to crash.
Any ideas, how I should make this work.
First I want to keep the loop for reading a file, makes the program exit the loop anytimes a window message comes, and then resume the loop.
Thanks in advance!
Afrinux

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Any ideas, how I should make this work.

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Ask your questions in the Windows programming forum?

>> Read a file sector by sector ( 2048 bytes) and display it in a tree view.

display *what* in the treeview - the entire file, statistics, analytic information?

>> If I try to read a file which size is bigger than 1 GB, the program uses 100% of the CPU memory and then crashes

chances are you won't be able to request that much memory using standard calls (new, malloc) - Windows has a function VirtualAlloc that may be helpful to you.

>> When the program is reading a file, I want to display a Progress Bar in a new dialog. Using CDialog->DoModal, the dialog does pop up, but the progress bar doesnt work.

try getting it to work on it's own first before incorporating it into your program - makes debugging that much easier. ;)

>> Maybe the program stays in that loop too long leading it to crash.

why would you think that a loop could crash a program (by itself)? a better guess might be stack overflow due to recursive or large stack-framed functions being used inside the loop.

by the way, we have a Windows forum here that would probably be a better place for this thread.

Hi Sebastiani and 7stud.
Thanks for your replies. I will post it in the windows sections.
And Sebastiani, I will make comments about your reply there.
Thanks for your time.
Afrinux

I have moved the topic here:
http://cboard.cprogramming.com/showthread.php?t=76477
Moderator: Would you please lock this thread. Thanks in advance.
Afrinux