int up[16][16],down[16][16],mouse_draw[16][16],pixel_save[16][16];

void MouseMath()
{int i,j,jj,k;
long UpNum[16]={
0x3fff,0x1fff,0x0fff,0x07ff,
0x03ff,0x01ff,0x00ff,0x007f,
0x003f,0x00ff,0x01ff,0x10ff,
0x30ff,0xf87f,0xf87f,0xfc3f
};
long DownNum[16]={
0x0000,0x7c00,0x6000,0x7000,
0x7800,0x7c00,0x7e00,0x7f00,
0x7f80,0x7e00,0x7c00,0x4600,
0x0600,0x0300,0x0300,0x0180
};
for(i=0;i<16;i++)
{
j=jj=15;
while(UpNum[i]!=0)
{
up[i][j]=UpNum[i]%2;
j--;
UpNum[i]/=2;
}
while(DownNum[i]!=0)
{
down[i][jj--]=DownNum[i]%2;
DownNum[i]/=2;
}
for(k=j;k>=0;k--)
up[i][k]=0;
for(k=jj;k>=0;k--)
down[i][k]=0;
for(k=0;k<16;k++)
{
if(up[i][k]==0&&down[i][k]==0)
mouse_draw[i][k]=1;
else if(up[i][k]==0&&down[i][k]==1)
mouse_draw[i][k]=2;
else if(up[i][k]==1&&down[i][k]==0)
mouse_draw[i][k]=3;
else
mouse_draw[i][k]=4;
}
}
mouse_draw[1][2]=4;
}
/*鼠标光标显示*/
void MouseOn(int x,int y)
{
int i,j;
int color;

for(i=0;i<16;i++)/*画鼠标*/
{
for(j=0;j<16;j++)
{
pixel_save[i][j]=getpixel(x+j,y+i);/*保存原来的颜色*/
if(mouse_draw[i][j]==1)
putpixel(x+j,y+i,0);
else if(mouse_draw[i][j]==2)
putpixel(x+j,y+i,15);
}
}
}
/*隐藏鼠标*/
void MouseOff()
{
int i,j,x,y,color;
x=MouseX;
y=MouseY;
for(i=0;i<16;i++)/*原位置异或消去*/
for(j=0;j<16;j++)
{
if(mouse_draw[i][j]==3||mouse_draw[i][j]==4)
continue;
color=getpixel(x+j,y+i);
putpixel(x+j,y+i,color^color);
putpixel(x+j,y+i,pixel_save[i][j]);
}
}
/*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);
}

/*设置鼠标左右边界
lx:左边界
gx:右边界 */
void MouseSetX(int lx,int rx)
{
_CX=lx;
_DX=rx;
_AX=0x07;
geninterrupt(0x33);
}

/*设置鼠标上下边界
uy:上边界
dy:下边界 */
void MouseSetY(int uy,int dy)
{
_CX=uy;
_DX=dy;
_AX=0x08;
geninterrupt(0x33);
}

/*设置鼠标当前位置
x:横向坐标
y:纵向坐标 */
void MouseSetXY(int x,int y)
{
_CX=x;
_DX=y;
_AX=0x04;
geninterrupt(0x33);
}

/*设置鼠标速度(缺省值:vx=8,vy=1)
值越大速度越慢 */
void MouseSpeed(int vx,int vy)
{
_CX=vx;
_DX=vy;
_AX=0x0f;
geninterrupt(0x33);
}

/*获取鼠标按下键的信息*/
/*是否按下左键
返回值: 1=按下 0=释放*/
int LeftPress()
{
_AX=0x03;
geninterrupt(0x33);
return(_BX&1);
}

/*是否按下中键
返回值同上 */
int MiddlePress()
{
_AX=0x03;
geninterrupt(0x33);
return(_BX&4);
}

/*是否按下右键
返回值同上 */
int RightPress()
{
_AX=0x03;
geninterrupt(0x33);
return(_BX&2);
}

/*获取鼠标当前位置*/
void MouseGetXY()
{
_AX=0x03;
geninterrupt(0x33);
MouseX=_CX;
MouseY=_DX;
}

int MouseStatus()/*鼠标按键情况*/
{
int x,y;
int status;
int press=0;
int i,j,color;
status=0;/*默认鼠标没有移动*/

x=MouseX;
y=MouseY;

while(x==MouseX&&y==MouseY&&status==0&&press==0)
{
if(LeftPress()&&RightPress())
press=1;
else if(LeftPress())
press=2;
else if(RightPress())
press=3;
MouseGetXY();
if(MouseX!=x||MouseY!=y)
status=1;
}
if(status)/*移动情况才重新显示鼠标*/
{
for(i=0;i<16;i++)/*原位置异或消去*/
for(j=0;j<16;j++)
{
if(mouse_draw[i][j]==3||mouse_draw[i][j]==4)
continue;
color=getpixel(x+j,y+i);
putpixel(x+j,y+i,color^color);
putpixel(x+j,y+i,pixel_save[i][j]);
}
MouseOn(MouseX,MouseY);/*新位置显示*/
}
if(press!=0)/*有按键得情况*/
return press;
return 0;/*只移动得情况*/
}