// Win16/32 related Icon structures..

#include <windows.h>

#define SIZEOF_LARGE_ICON 0x2E8
#define SIZEOF_SMALL_ICON 0x128

#define SIZEOF_ICONS (SIZEOF_LARGE_ICON + SIZEOF_SMALL_ICON)

// Icon format (ID = 03h)

typedef struct _ICONIMAGE {
  BITMAPINFOHEADER icHeader;     // DIB header
  RGBQUAD          icColors[1];  // Color table
  BYTE             icXOR[1];     // DIB bits for XOR mask
  BYTE             icAND[1];     // DIB bits for AND mask
} ICONIMAGE, *PICONIMAGE;

// Group Icon format (ID = 0Eh)

typedef struct _ICONDIRENTRY {
  BYTE   bWidth;                 // Width, in pixels, of the image
  BYTE   bHeight;                // Height, in pixels, of the image
  BYTE   bColorCount;            // Number of colors in image (0 if >=8bpp)
  BYTE   bReserved;              // Reserved
  WORD   wPlanes;                // Color Planes
  WORD   wBitCount;              // Bits per pixel
  DWORD  dwBytesInRes;           // how many bytes in this resource?
  WORD   nID;                    // the ID
} ICONDIRENTRY, *PICONDIRENTRY;

#define SIZEOF_ICONDIRENTRY sizeof(ICONDIRENTRY)

typedef struct _ICONDIR {
  WORD            idReserved;    // Reserved (must be 0)
  WORD            idType;        // Resource type (1 for icons)
  WORD            idCount;       // How many images?
  ICONDIRENTRY    idEntries[1];  // The entries for each image
} ICONDIR, *PICONDIR;

#define SIZEOF_ICONDIR 6