以前苍穹在论坛上发过一个在tc中显示16色位图的程序，可我为什么把图片路径写上去后显示不出来呢？显示的只有轮廓，中间是不规则的线条啊~大家帮我看一下吧~嘿嘿～多谢~
程序如下（红色是我改动的地方，蓝色是原来帖子的内容，我存放的位图test.bmp在tc目录下）:
#include "stdio.h"
#include "dir.h"
#include "dos.h"
#include "graphics.h"
char *malloc();/*malloc转换*/
char bmp_to_dat(char *bmp,char *dat)
/*将16色BMP文件转换为可以用putimage输出的格式，bmp为原BMP文件，dat为转化文件*/
{unsigned char c[8],scan_times,scan_pixs;
unsigned char workpos;int i,j,k,n,nowpos,iw,ih;
static int color[16]={0,4,2,6,1,5,3,7,8,12,10,14,9,13,11,15};
unsigned char workline[640],scanline[640];
FILE *fp,*targetfp;
union
{unsigned char value;
struct
{unsigned cl:4;
unsigned ch:4;
}color;
}mycolor;
if((fp=fopen("test.bmp","rb"))==NULL)return(0);/*原来该行程序是：if((fp=fopen(bmp,"rb"))==NULL)return(0);*/
targetfp=fopen(dat,"wb");
fseek(fp,18,SEEK_SET);
iw=0;ih=0;
fread(&iw,4,1,fp); /*读图像宽度*/
fread(&ih,4,1,fp); /*读图像高度*/
if(iw==0&&ih==0&&iw>640&&ih>480)
{fclose(fp);fclose(targetfp);return(0);}
iw--;ih--; /*∵putimage中的长宽比实际数值少1*/
scan_times=iw/8+1; /*行处理单位数*/
scan_pixs=scan_times*4; /*行像素字节数∵1单位=4字节*/
fputc(iw%256,targetfp); /*填充信息头：长、宽部分*/
fputc(iw/256,targetfp);
fputc(ih%256,targetfp);
fputc(ih/256,targetfp);
fseek(fp,-scan_pixs,SEEK_END);
for(j=0;j<=ih;j++)
{nowpos=0;
fread(scanline,scan_pixs,1,fp);
fseek(fp,-scan_pixs*2,SEEK_CUR);
for(n=3;n>=0;n--) /*解码4个位面*/
{for(i=0;i<scan_times;i++) /*解码各编码单位*/
{workpos=0;
for(k=0;k<4;k++) /*分离出8个像素*/
{mycolor.value=scanline[i*4+k];
c[k*2]=color[mycolor.color.ch];
c[k*2+1]=color[mycolor.color.cl];
}
for(k=0;k<8;k++)workpos+=(c[k]>>n&1)<<(7-k);
workline[nowpos]=workpos;nowpos++;
}}
fwrite(workline,scan_pixs,1,targetfp);
}
fclose(fp);fclose(targetfp);
return(1);
}
main()
{int gd=VGA,gm=VGAHI,n;
char *buffer,bmpfile[13],_16file[13]={0};
FILE *fp;
struct ffblk *ff;
initgraph(&gd,&gm,"");
strcpy(bmpfile,"test.bmp"); /*原来该行程序是：strcpy(bmpfile,"mm.bmp");*/
strncpy(_16file,bmpfile,strlen(bmpfile)-3);
strcat(_16file,"dat");
if(!bmp_to_dat(bmpfile,_16file))
{puts("File Error!");closegraph();exit(0);}
fp=fopen(_16file,"rb");
findfirst(_16file,ff,FA_ARCH);
if((buffer=malloc(ff->ff_fsize))==NULL)exit(0);
n=0;
while(!feof(fp))
{buffer[n]=fgetc(fp);
n++;
}
putimage(63,5,buffer,COPY_PUT);
getch();
closegraph();
free(buffer);
fclose(fp);
}
这是原来的bmp图，即test.bmp：
这是显示效果（相机拍的）：
我和大鸟都觉得好像是坐标有问题~但还是不懂~~~~
[此贴子已经被作者于2007-8-10 9:44:31编辑过]
显示的乱七八糟啊