Help in reading Binary files

[Pravesh Koirala]

I was trying this code and couldn't run it.
Includes

#include <iostream>
#include <fstream>
using namespace std;

        ifstream file;
        file.open("KeyMap.dat",ios::in|ios::binary);
        file.read(reinterpret_cast<char *>(KeyMap), sizeof(KeyMap) * 18); //*
        file.close();

Nothing happens..
In the point where I marked *, the execution shifts to somewhere else..In the Debugger's log, it shows
"In __cxa_throw () ()", In the watch window it shows file = <incomplete type>.
And nothing is read from the file..
Please help.

[kooth]

It's probably because you have a problem defining or initializing KeyMap. Seeing all of your code would help, because mind-reading costs extra! ;)

[Pravesh Koirala]

KeyMap is declared as

struct __KeyMap
        {
            enumMoves Moves;
            SDLKey Key;
        }KeyMap[2][9];

[kooth]

OK, that's helpful. How do you declare and initialize it?

[Pravesh Koirala]

Well couldn't get your point. there's no initialization. That's all there is to declaration and initialization. And the struct is a public one.

[kooth]

I was asking where in your code is the structure defined. Anyway, in your file.read() does the file contain 18 keymaps? On the line before that, did the file open OK?

[Pravesh Koirala]

That structure is defined inside a class. I know that its not the problem with the structure. And yes the file do contains 18 keymaps. file.good() returned 1. Thanks in advance

[kooth]

Well I can't help you if you will not post your code. Good luck.

[Pravesh Koirala]

Can post my code,, except that it is more than 2000 lines.. :((,, I think i will now resort to my old method using stdio.h's fread method. Thanks kooth..

[mackabee]

sizeof(KeyMap) == sizeof(__KeyMap) * 18

Try sizeof(KeyMap). It looks like you're potentially overflowing 'KeyMap'