borland c.cpp

实现汉字的显示功能

//位图显示程序
 
//分类:Borland C
//定义为图结构
 struct bmphead
{
  unsigned char b;
  unsigned char m;
  unsigned long bfsize;
  unsigned int bfresterved1;
  unsigned int bfresterved2;
  unsigned long bfoffbits;
  unsigned long bitsize;
  unsigned long bmpwidth;
  unsigned long bmpheight;
  unsigned int bmpplanes;
  unsigned int bmpcount;
  unsigned long bmpcompression;
  unsigned long bmpimgsize;
  unsigned long bmpxpeispermeter;
  unsigned long bmpypeispermeter;
  unsigned long bmpcirused;
  unsigned long bmpimportant;
  };

////////////////////////////////////////////////////////////////////////////////

struct ColorIndex
{
  unsigned char Blue;
  unsigned char Green;
  unsigned char Red;
  unsigned char Reserved;
  };

int pageno;

/*==============================================================================================*/

void SetPlate(int ColorIndex,char Red,char Green,char Blue)
{
  outportb(0x3c8,ColorIndex);
  outportb(0x3c9,Red);
  outportb(0x3c9,Green);
  outportb(0x3c9,Blue);
  }
/*----------------------------------------------------------------------------------------------*/

/*显示函数*/
void showbmp(int x,int y,char *filename)
{
 FILE *fp;
 char c,temp1,temp2;
 struct bmphead bmp;
 struct ColorIndex index[16];
 register int m;
 unsigned long n = 0;
 register unsigned long i=0,j=0;
 /* struct palettetype  oldq; */
 //struct palettetype  *sq;
 /* getpalette(&oldq); */
 if((fp=fopen(filename,"rb"))==NULL)
 {
  //printf("can't open file!");
  return;
  }
 else
 {
  fread(&bmp,sizeof(struct bmphead),1,fp);
  fread(index,sizeof(struct ColorIndex),16,fp);
  }

 if(bmp.bmpwidth%32==0)
 {
  n = bmp.bmpwidth/2;
  }
 else
 {
  n=4+bmp.bmpwidth/2-(bmp.bmpwidth/2)%4;
  }
  m=9;
  SetPlate(57,index[m].Red,index[m].Green,index[m].Blue);
  m++;
  SetPlate(58,index[m].Red,index[m].Green,index[m].Blue);
  m++;
  SetPlate(59,index[m].Red,index[m].Green,index[m].Blue);
  m++;
  SetPlate(60,index[m].Red,index[m].Green,index[m].Blue);
  m++;
  SetPlate(61,index[m].Red,index[m].Green,index[m].Blue);
  m++;
  SetPlate(62,index[m].Red,index[m].Green,index[m].Blue);
  m++;
  SetPlate(63,index[m].Red,index[m].Green,index[m].Blue);
  fseek(fp, bmp.bfoffbits,0);
  for(m=0; m<bmp.bmpheight; m++)
  {
    j=0;
    for(i=0;i<n;i++)
    {
    c=fgetc(fp);
    if(j<bmp.bmpwidth)
    {
      temp1=(c&0xF0)>>4;
      temp2=c&0x0F;
      if(temp1 != 0)
      {
          putpixel(x+(int)j,320+y-m,(int)temp1);
        }
      j++;
      if(temp2 != 0)
      {
        putpixel(x+(int)j,320+y-m,temp2);
        }
      j++;
      }
    }
    }
 fclose(fp);
   }


//你可以通过这个链接引用该篇文章:http://sgfxj.bokee.com/tb.b?diaryId=11301842 

//2006.7.8 12:52 作者：落泪天使 收藏 | 评论：0 | 阅读：0