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

//Bitmap file header
struct bmpfileheader
{
    unsigned short filetype;
    unsigned long filesize;
    short reserved1;
    short reserved2;
    unsigned long bitmapoffset;
};
typedef struct bmpfileheader BMP_H;

//DIB header (bitmap information header)
struct bitmapheader
{
    unsigned long size;
    long width;
    long height;
    unsigned short planes;
    unsigned short bitsperpixel;
    unsigned long compression;
    unsigned long sizeofbitmap;
    unsigned long horzres;
    unsigned long vertres;
    unsigned long colorsused;
    unsigned long colorsimp;
};
typedef struct bitmapheader BMP_INFO;

//Color table
struct color
{
    unsigned char blue;
    unsigned char green;
    unsigned char red;
};
typedef struct color RGB;


int main(void)
{
    FILE* fp=NULL;
    char buffer[25];

    BMP_H *bmp_h=NULL;
    BMP_INFO *bmp_info=NULL;
    RGB *rgb=NULL;

    fp = fopen("f:\\n1.bmp", "rb");

    //Bitmap file header
    bmp_h=(BMP_H*)malloc(sizeof(BMP_H));
    fread(bmp_h,sizeof(BMP_H),1, fp);

    printf("\n-------Bitmap file header-------\n");
    printf("filetype=%x\n",bmp_h->filetype);
    printf("filesize=%d\n",bmp_h->filesize);
    printf("reserved1=%d\n",bmp_h->reserved1);
    printf("reserved2=%d\n",bmp_h->reserved2);
    printf("bitmapoffset=%d\n",bmp_h->bitmapoffset);

    //DIB header (bitmap information header)
    bmp_info=(BMP_INFO*)malloc(sizeof(BMP_INFO));
    fread(bmp_info,sizeof(BMP_INFO), 1, fp);

    printf("\n-------Bitmap information header-------\n");
    printf("size=%d\n",bmp_info->size);
    printf("width=%d\n",bmp_info->width);
    printf("height=%d\n",bmp_info->height);
    printf("planes=%d\n",bmp_info->planes);
    printf("bitsperpixel=%d\n",bmp_info->bitsperpixel);
    printf("compression=%d\n",bmp_info->compression);
    printf("sizeofbitmap=%d\n",bmp_info->sizeofbitmap);
    printf("horzres=%d\n",bmp_info->horzres);
    printf("vertres=%d\n",bmp_info->vertres);
    printf("colorsused=%d\n",bmp_info->colorsused);
    printf("colorsimp=%d\n",bmp_info->colorsimp);


    fclose(fp);

    free(bmp_h);
    free(bmp_info);
    return(0);

           /*กำหนดค่า
    fseek(fp,0,SEEK_END);
    bmp_info->size=ftell(fp);
    bmp_info->bitsperpixel=24;
    bmp_info->width=512;
    bmp_info->height=512;
    */
}