I have a program which prints the current mouse cursor position into the console.
I want to create bounds in which the mouse can go. ( 10,10) and (20,20)
So here is my code so far:
#include <stdio.h>
#include <dos.h>
#include <stdlib.h>
#include <conio.h>
#include <string.h>
int x,y;
struct REGPACK reg;
void getmousepos()
{
reg.r_ax=0x03;
intr(0x33,®);
x=reg.r_cx/8;
y=reg.r_dx/8;
}
int main()
{
clrscr();
_setcursortype(_NOCURSOR);
reg.r_ax=0x01;
intr(0x33,®);
do
{
getmousepos();
printf(" ");
printf(" ");
window(1,1,79,24);
printf("Current position : %3d, %3d",x,y);
if(x < 10)
//set the x cursor possition to 10
if(x > 20)
//set the x cursor possition to 20
if(y < 10)
//set the y cursor to 10
if(y > 20)
//set the y cursor to 20
}while(!kbhit());
return 1;
}
Is there any way of setting reg.r_cx and reg.r_dx registers with the cordinates i want, and then calling intr() with the proper interrupt ?
You do that simply the same way as you have done it in getMouse():
void setMousePosition(int x, int y)
{
reg.r_ax=0x04;
reg.r_cx = x;
reg.r_dx = y;
intr(0x33,®);
}
Alternative you can use range limiter:
void setMouseHorizontalRange(int min, int max)
{
reg.r_ax=0x07;
reg.r_cx = min;
reg.r_dx = max;
intr(0x33,®);
}
void setMouseVerticalRange(int min, int max)
{
reg.r_ax=0x08;
reg.r_cx = min;
reg.r_dx = max;
intr(0x33,®);
}