可编辑

r.x.ax=0x4f03;

int86(0x10,&r,&r);

return(r.x.bx);

}

drawbmp(int start_x,int start_y,char filename[])

{

char buffer[640];

int i,j,k,n,r,g,b,width,length;

long position;

FILE *fp;

if((fp=fopen(filename,"rb"))==NULL)

{

printf("Error! Can't open file!");

getch();

return;

}

fseek(fp,28,SEEK_SET);

fread(&i,2,1,fp);

if(i!=8) /*检查是否为256色位图*/

{

puts("Error!Can't find bitmap!");

fclose(fp);

getch();

exit(0);

}

fseek(fp,18,SEEK_SET);

fread(&width,4,1,fp);

fread(&length,4,1,fp);

if(firsttime)

{

fseek(fp,54,SEEK_SET);

for(i=0;i<256;i++) /*按照该图片的DAC色表设置色彩寄存器*/

{

b=fgetc(fp);g=fgetc(fp);r=fgetc(fp); /*获取R、G、B分量*/

outportb(0x3c8,i);

outportb(0x3c9,r>>2); /*右移是要转化为VGA的6位寄存器形式*/ outportb(0x3c9,g>>2);

outportb(0x3c9,b>>2);

fgetc(fp);

}

}

else

.