C mouse programming

[gurmeet07]

hi to all

here are some functions of C
can anybody explain these functions??????
actually i have to make a project in C and smbody told me u can use these functions for mouse programming but i dont know wat to do with these??????
can u please explain it wat exactly these functions are doing???

int initmouse()
{
i.x.ax=0;
int86(0x33,&i,&o);
return(o.x.ax);
}

void showmouseptr()
{
i.x.ax=1;
int86(0x33,&i,&o);
}

int 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);
}

void 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;
}

[sicarie]

Did you try putting these into a compiler and seeing what they did, then playing with the values in there to get an even better idea of what it does?

[gurmeet07]

thnx for the suggestio n dear

I have already tried that but i m not able to understand what does i , o ,x and ax exactly means??????????
why int86 has been used ???

like in the following code ................

i.x.ax=0;
int86(0x33,&i,&o);
return(o.x.ax);