#include<io.h>
#include<stdio.h>
#include<dos.h>
#include<string.h>
#include<math.h>
#include<stdio.h>
#include<bios.h>
#include<mem.h>
#include<fcntl.h>
#include<stdlib.h>
#include<conio.h>
#define SCREEN_HEIGHT 200
#define SCREEN_WIDTH 320
#define PALETTE_MASK 0x3c6
#define PALETTE_REGISTER_RD 0x3c7
#define PALETTE_REGISTER_WR 0x3c8
#define PALETTE_DATA 0x3c9
#define VGA256 0x13
#define TEXT_MODE 0x03
unsigned char far *video_buffer=(char far *)0xA0000000L;
typedef struct BMP_file
{
unsigned int bfType;
unsigned long bfSize;
unsigned int Reserved1;
unsigned int reserved2;
unsigned long bfOffset;
}
bitmapfile;
typedef struct BMP_info
{
unsigned long biSize;
unsigned long biWidth;
unsigned long biHeight;
unsigned int biPlanes;
unsigned int biBitCount;
unsigned long biCompression;
unsigned long biSizeImage;
unsigned long biXpolsPerMeter;
unsigned long biYpelsPerMeter;
unsigned long biClrUsed;
unsigned long biClrImportant;
}
bitmapinfo;
typedef struct RGB_BMP_typ
{
unsigned char blue;
unsigned char green;
unsigned char red;
unsigned char reserved;
}RGB_BMP,*RGB_BMP_ptr;
typedef struct bmp_picture_typ
{
bitmapfile file;
bitmapinfo info;
RGB_BMP palette[256];
char far *buffer;
} bmp_picture, *bmp_picture_ptr;
void Set_BMP_Palette_Register(int index,RGB_BMP_ptr color)
{
outp(PALETTE_MASK,0xff);
outp(PALETTE_REGISTER_WR,index);
outp(PALETTE_DATA,color->red);
outp(PALETTE_DATA,color->green);
outp(PALETTE_DATA,color->blue);
}
void Check_Bmp(bmp_picture_ptr bmp_ptr)
{
if(bmp_ptr->file.bfType!=0x4d42)
{
printf("Not a BMP file!/n"
![Wink ;) ;)](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f609.png)
;
exit(1);
}
if(bmp_ptr->info.biCompression!=0)
{
printf("Can not display a compressed BMP file!/n"
![Wink ;) ;)](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f609.png)
;
exit(1);
}
if(bmp_ptr->info.biBitCount!=8)
{
printf("Not a index 16color BMP file!/n"
![Wink ;) ;)](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f609.png)
;
exit(1);
}
}
void BMP_Load_Screen(char *bmp)
{
int i,fp;
bmp_picture bmp256;
char *file_name;
if ((fp=open(bmp,O_RDONLY))==1)
return;
read(fp,&bmp256.file,sizeof(bitmapfile));
read(fp,&bmp256.info,sizeof(bitmapinfo));
Check_Bmp((bmp_picture_ptr)&bmp256);//u can ingore it
// lseek(fp,54,0);
for (i=0;i<256;i++)
{
read(fp,&bmp256.palette
.blue,1);
read(fp,&bmp256.palette.green,1);
read(fp,&bmp256.palette.red,1);
read(fp,&bmp256.palette.reserved,1);
bmp256.palette.blue=bmp256.palette.blue>>2;
bmp256.palette.green=bmp256.palette.green>>2;
bmp256.palette.red=bmp256.palette.red>>2;
}
for (i=0;i<256;i++)
Set_BMP_Palette_Register(i,(RGB_BMP_ptr)&bmp256.palette);
for(i=SCREEN_HEIGHT-1;i>=0;i--)
{
lseek(fp,1078+(long)(SCREEN_HEIGHT-i-1)*SCREEN_WIDTH,0);
read(fp,&video_buffer[i*SCREEN_WIDTH],SCREEN_WIDTH);
}
close(fp);
}
void Set_Video_Mode(int mode)
{
union REGS inregs,outregs;
inregs.h.ah=0;
inregs.h.al=(unsigned char)mode;
int86(0x10,&inregs,&outregs);
}
int main()
{
Set_Video_Mode(VGA256);
BMP_Load_Screen("256.bmp"
;
getch();
Set_Video_Mode(TEXT_MODE);
}
网上摘的,为何不出人呀?????