Hi,

I have a structure:

struct JFIF_HEADER
{
    WORD marker[2];        // = 0xFFD8FFE0
    WORD length;           // = 0x0010
    BYTE signature[5];     // = "JFIF\0"
    BYTE versionhi;        // = 1
    BYTE versionlo;        // = 1
    BYTE xyunits;          // = 0
    WORD xdensity;         // = 1
    WORD ydensity;         // = 1
    BYTE thumbnwidth;      // = 0
    BYTE thumbnheight;     // = 0
};

This is how I read it from the file:

HANDLE file = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ,
                         NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
DWORD tmp = 0;
DWORD size = GetFileSize(file, &tmp);
BYTE *DATA = new BYTE[size];
ReadFile(file, DATA, size, &tmp, 0);

JFIF_HEADER header;
memcpy(&header, DATA, sizeof(JFIF_HEADER));

This is how the beginning of my file looks in hex editor:

0xFF 0xD8 0xFF 0xE0 0x00 0x10 0x4A 0x46 0x49 0x46 0x00 0x01 0x01 0x00 0x00 0x01

When I print header.marker, it shows exactly what it should (0xFFD8FFE0). But when I print header.length, it shows 0x1000 instead of 0x0010. The same thing is with xdensity and ydensity. Why do I get wrong data when reading a WORD?

Thank you.