在别的BBS看到的关于鼠标程序(ZT)

#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
#include<math.h>
#include<graphics.h>
#include<dos.h>
/*鼠标信息宏定义*/
#define WAITING 0xff00
#define LEFTPRESS 0xff01
#define LEFTCLICK 0xff10
#define LEFTDRAG 0xff19
#define RIGHTPRESS 0xff02
#define RIGHTCLICK 0xff20
#define RIGHTDRAG 0xff2a
#define MIDDLEPRESS 0xff04
#define MIDDLECLICK 0xff40
#define MIDDLEDRAG 0xff4c
#define MOUSEMOVE 0xff08

int hide[16][16], bury[16][16],mousedraw[16][16],pixelsave[16][16];/*分别定义隐码、掩码、点值*/
int mousebutton,mouseexist,mouseX,mouseY;
void mousepicture() /*画心形，可设置其它的图形*/
{
  int i,j,k;
  long hidenum[16]={
            0xe3c7,0xc183,0x8001,0x0000,
            0x0000,0x0000,0x0000,0x8001,
            0x8001,0xc003,0xe007,0xf00f,
            0xf81f,0xfc3f,0xfe7f,0xffff,
                        } ; /*隐码点值，是对点素进行设置*/
   long burynum[16]={

            0x1c38,0x3e7c,0x7ffe,0xffff,
            0xffff,0xffff,0xffff,0x7ffe,
            0x3ffe,0x3ffc,0x1ff8,0x0ff0,
            0x07e0,0x03c0,0x0180,0x0000,
                         };/*掩码点值*/
for(i=0;i<16;i++)
{
      while(hidenum[i]!=0)
     {
        for(j=15;j>=0;j--)
         {

           hide[i][j]=hidenum[i]%2;
           hidenum[i]/=2;
          }   /*把隐码转化为0-1*/
      }
       while(burynum[i]!=0)
       {
         for(k=15;k>=0;k--)
         {
           bury[i][j]=burynum[i]%2;
           burynum[i]/=2;
         }
       }
       for(k=0;k<16;k++)
       {
          if(hide[i][k]==0&&bury[i][k]==0)
          mousedraw[i][k]=1;
          else if(hide[i][k]==0&&bury[i][k]==1)
          mousedraw[i][k]=2;
          else if(hide[i][k]==1&&bury[i][k]==0)
          mousedraw[i][k]=3;
          else
          mousedraw[i][k]=4;  /*期间实行逻辑与和异或*/
       }
}

}
void  mouseon(int x,int y)  /*显示鼠标*/
{
  int i,j;
  for(i=0;i<16;i++)
  {
    for(j=0;j<16;j++)
    {
     pixelsave[i][j]=getpixel(x+j,y+i);/*取得指定像素的颜色*/
     if(mousedraw[i][j]==1)
      putpixel(x+j,y+i,6);
      if(mousedraw[i][j]==2) /*1、2采用点的逻辑运算判断进行着色*/
      putpixel(x+j,y+i,6);
     }
   }
}
void mouseoff() /*消失鼠标 */
{

   int i,j,x,y,color;
   x=mouseX;
   y=mouseY;
   for(i=0;i<16;i++)
  {
    for(j=0;j<16;j++)
    {
     if((mousedraw[i][j]==3)||(mousedraw[i][j]==4)) /*3、4采用点的逻辑运算判断可否继续运行*/
     continue;
     putpixel(x+j,y+i,BLACK); /*使其鼠标移动前的位置变为黑色*/
     putpixel(x+j,y+i,pixelsave[i][j]);/*使其恢复指定像素的颜色*/

     }
   }
}
/*鼠标是否加载
MouseExist:1=加载
0=未加载
MouseButton:鼠标按键数目 */
void mouseload()
{
_AX=0x00;
geninterrupt(0x33);
mouseexist=_AX;
mousebutton=_BX;
}

/*鼠标状态值初始化*/
void mousereset()
{
_AX=0x00;
geninterrupt(0x33);/*0x33是DOS中断,是在DOS下通过调用中断来对鼠标进行操作.*/
}

/*改变鼠标光标形状
SHAPE sp:为以上定义的形状
void MouseShape(SHAPE sp)
{
_BX=sp.hotx;
_CX=sp.hoty;
_ES=FP_SEG(&sp.shape);
_DX=FP_OFF(&sp.shape);
_AX=0x09;
geninterrupt(0x33);