Bitmap file header strcuture.
typedef struct _BITMAPFILEHEADER {
USHORT usType; /* Type of resource the file contains. */
ULONG cbSize; /* Size of the BITMAPFILEHEADER structure in bytes. */
SHORT xHotspot; /* Width of hotspot for icons and pointers. */
SHORT yHotspot; /* Height of hotspot for icons and pointers. */
USHORT offBits; /* Offset in bytes. */
BITMAPINFOHEADER bmp; /* Bitmap information header structure. */
} BITMAPFILEHEADER;
typedef BITMAPFILEHEADER * PBITMAPFILEHEADER ;