Untitled

#include <dos.h>
#include <stdio.h>
#include <conio.h>

void show_mouse();
void hide_mouse();
void get_mouse_position(int *x, int *y, int *buttons);
void update_status(int x, int y, int buttons);

int main() {
    union REGS in, out;
    int x, y, buttons;

    in.x.ax = 0x0000;
    int86(0x33, &in, &out);

    if (out.x.ax == 0) {
        printf("Mouse driver is not installed.\n");
        return 1;
    }

    show_mouse();

    while (!kbhit()) {
        get_mouse_position(&x, &y, &buttons);
        update_status(x, y, buttons);
    }

    hide_mouse();

    return 0;
}

void show_mouse() {
    union REGS in;
    in.x.ax = 0x0001;
    int86(0x33, &in, &in);
}

void hide_mouse() {
    union REGS in;
    in.x.ax = 0x0002;
    int86(0x33, &in, &in);
}

void get_mouse_position(int *x, int *y, int *buttons) {
    union REGS in, out;
    in.x.ax = 0x0003;
    int86(0x33, &in, &out);
    *x = out.x.cx / 8;
    *y = out.x.dx / 8;
    *buttons = out.x.bx;
}

void update_status(int x, int y, int buttons) {
    gotoxy(1, 1);
    clreol();
    printf("Position: (%d, %d) Buttons: %s%s%s",
           x, y,
           (buttons & 1) ? "Left " : "",
           (buttons & 2) ? "Right " : "",
           (buttons & 4) ? "Middle" : "");
}