/*

    This code demostrates how to get the size of the
    real executable. No matter whether you've added
    extra data to the exe, the value should be the
    original size.

*/

#include <windows.h>
#include <stdio.h>
#include <stdlib.h>

int main(void)
{
    FILE *fp;
    IMAGE_DOS_HEADER stDos;
    IMAGE_NT_HEADERS stNT;
    IMAGE_SECTION_HEADER stSection;
    int nSize;
    int i;
    char szFile[MAX_PATH];

    GetModuleFileNameA(0, szFile, MAX_PATH);

    fp = fopen(szFile, "rb");
    if(!fp)
    {
        printf("Can't open file for reading.\n");
        return 1;
    }

    fread(&stDos, 1, sizeof(stDos), fp);
    fseek(fp, stDos.e_lfanew, SEEK_SET);
    fread(&stNT, 1, sizeof(stNT), fp);

    nSize = stNT.OptionalHeader.SizeOfHeaders;
    for(i = 0; i < stNT.FileHeader.NumberOfSections; i++)
    {
        fread(&stSection, 1, sizeof(stSection), fp);
        nSize += stSection.SizeOfRawData;
    }

    fclose(fp);
    printf("My size is %d bytes.\n", nSize);

    return 0;
}