MSMENU.C

#include<dos.h>
union REGS i,o;
main()
{
int x;
clrscr();
x=initmouse();
while(!kbhit())
{
showmouseptr();
}
}
initmouse()
{
i.x.ax=0;
int86(0x33,&i,&o);
return(o.x.ax);
}
showmouseptr()
{
i.x.ax=1;
int86(0x33,&i,&o);
}
restrictmouseptr(int x1,int y1,int x2,int y2)
{
i.x.ax=7;
i.x.cx=x1;
i.x.dx=x2;
int86(0x33,&i,&o);
i.x.ax=8;
i.x.cx=y1;
i.x.dx=y2;
int86(0x33,&i,&o);
}
getmousepos(int *button,int *x,int *y)
{
i.x.ax=3;
int86(0x33,&i,&o);
*button=o.x.bx;
*x=o.x.cx;
*y=o.x.dx;
}