#include <conio.h> // these includes are for gotoxy and
#include <stdio.h> // printf functions
#include <dos.h>   // delay(miliseconds);

unsigned int MouseX, MouseY;
unsigned char MouseL, MouseC, MouseR;


int MouseInit() {
int result;
asm {
   mov ax,0x00
   int 0x33
   mov [result],ax
	}
return(result);
}

void MouseShow() {
asm {
   mov ax,0x01
   int 0x33
	}
}

void MouseHide() {
asm {
   mov ax,0x02
   int 0x33
	}
}

void MouseRead() {      //   CX = X; DX = Y; BX = Buttons
asm {
   mov ax,0x03
   int 0x33

   mov [MouseX],cx
   mov [MouseY],dx
   mov bh,bl
   and bh,00000001b
   and bl,00000010b
   mov [MouseL],bh
   sar bl,1
   mov [MouseR],bl
	}
}

void MouseRange(int Xmin, int Ymin, int Xmax, int Ymax) {
asm {
   mov ax,7
   mov cx,[Xmin]
   mov dx,[Xmax]
   int 33h
   mov ax,8
   mov cx,[Ymin]
   mov dx,[Ymax]
   int 33h
	}
}

void MousePut(int Xpos, int Ypos) {
asm {
   mov ax,4
   mov cx,[Xpos]
   mov dx,[Ypos]
   int 33h
	}
}

void ReadKey() {
asm {
   mov ax,0x00
   int 0x16
	}
}

void CursorOff() {
asm {
   mov ah,01
   mov cx,2000h
   int 10h
	}
}

void main() {
int x,y;
	 clrscr();
	 CursorOff();
			MouseInit();
			MouseShow();
	 printf("Coloque o mouse na posicao 80, 80 para continuar");

	 for (;!((MouseX==80)&&(MouseY==80));) {
			MouseRead();
	   gotoxy(1,2);
	   printf("X: %d  Y: %d   Left: %d   Right: %d   ",MouseX,MouseY,MouseL,MouseR);
	 }

	 clrscr();

	 printf("Agora seu espaco esta' limitado...");
	 printf("Pressione qualquer tecla para continuar...");
			MouseRange(80,80,280,180);
	 ReadKey();

	 clrscr();

			MouseInit();
			MouseShow();

	 printf("Agora nao mexa com o mouse, apenas pressione uma tecla e assista\n");
	 ReadKey();
	   for (;;) {
			MouseRead();
			MouseShow();
			if (MouseX<40) MouseX+=4;
			if (MouseX>40) MouseX-=4;
			if (MouseY<60) MouseY+=4;
			if (MouseY>60) MouseY-=4;
			MousePut(MouseX,MouseY);
			if ((MouseX==40) && (MouseY==60)) break;
			delay(100);
			}
	 printf("Muito bem! Agora pressione qualquer tecla para sair");
	 ReadKey();
			MouseHide();
}