All Bitmap files start from the BitmapFileHeader structure:
Typedef struct
{
Word bftype; // file identifier (must be "bm")
DWORD BFSIZE; // File size (in bytes)
Word bfreserved1; // is retained, usually 0
Word bFReServed2; // image data offset (in bytes)
} BitmapfileHeader;
The following is the BitMapInfoHeader structure, mainly used to describe the image:
Typedef struct
{
DWORD Bisize; // BitmapInfoHeader Size (in bytes)
Long biwidth; // Image of the image (in pixel)
Long biheight; // Image of the image (in pixel)
Word biplanes; // Color flat number (general 1) Word bibitcount // Each pixel occupies DWORD BICOMPRESSION; // Compressed Type DWORD BisizeImage; // Image Size (in bytes) Long Bixpelspermeter ; // horizontal pixel number / m rice long biypelspermeter; // vertical pixel number / m rice DWORD biclrused; // The color index number used DWORD BICLRIMPORTANT; // 'Important' color
} BitmapInfoHeader;
