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

////////////////////////////////////////////////////////////////////////////////////

union REGS regs;
////////////////////////////////////////////////////////////////////////////////////

void draw_screen(void);
void show_mouse(void);
void initialize_mouse(void);
void hide_mouse(void);
void get_mouse_data(void);
void set_mouse_pos(int xpos, int ypos);
void set_mouse_horizontal_minmax(int xmin, int xmax);
void set_mouse_vertical_minmax(int ymin, int ymax);
void set_mouse_ratio(int x_ratio, int y_ratio);
void restrict_mouse(int xpmin, int ypmin, int xpmax, int ypmax);
void free_mouse_in_text_mode(void);

////////////////////////////////////////////////////////////////////////////////
void main(void)
{
  char buffer[3];
  int x,y;

   draw_screen();

  //only initializes the mouse but don't
  //show its pointer on the screen.
  initialize_mouse();

  //shows the mouse pointer on the screen
  //if U don't include this statement in
  //the code then mouse will work even though
  //it is not visible.
  show_mouse();//

  restrict_mouse(1, 1, 78, 22);

	  do{

		//call to mouse interrupt to
		//get the current status of
		//the mouse until you quit.
		get_mouse_data();

		//shows the mouse coordinates at
		//down right portion of screen.
		gotoxy(55, 24);cprintf("%2d", ((regs.x.cx)/8));
		gotoxy(62, 24);cprintf("%2d", ((regs.x.dx)/8));


		//if none of the mouse button is clicked ???
		if((regs.x.bx)==0)
		  {
			gotoxy(36, 24);cprintf("None ");
		  }//end of if mouse left button is clicked

		//check else if mouse left button is clicked ???
		else if((regs.x.bx)==1)
		  {
			hide_mouse();
			textcolor(random(16));
			gotoxy((regs.x.cx/8)+1, (regs.x.dx/8)+1);
			cprintf("Û");
			show_mouse();

			textcolor(15);
			gotoxy(36, 24);cprintf("Left ");
			delay(10);//wait for a movement
		  }//end of if mouse left button is clicked

		//check else if mouse right button is clicked ???
		else if((regs.x.bx)==2)
		  {
			hide_mouse();
			textcolor(0);
			gotoxy((regs.x.cx/8)+1, (regs.x.dx/8)+1);
			cprintf("Û");
			show_mouse();

			textcolor(15);
			gotoxy(36, 24);cprintf("Right");
			delay(10);//wait for a movement
		  }//end of if mouse right button is clicked

		//check else if both mouse buttons are clicked ???
		else if((regs.x.bx)==3)
		  {
			gotoxy(36, 24);cprintf("Both ");
			delay(10);//wait for a movement
		  }//end of if both mouse buttons are clicked

	    }while(!kbhit());//loop goes on until a key is pressed

  //before quitting you
  //should hide the mouse.
  hide_mouse();

}//end of main program

 /* draw_screen();
  show_mouse();
  initialize_mouse();
  restrict_mouse(1, 1, 78, 22);
      do{

		//call to mouse interrupt to
		//get the current status of
		//the mouse until you quit.
		get_mouse_data();

		//shows the mouse coordinates at
		//down right portion of screen.
		gotoxy(55, 24);cprintf("%2d", ((regs.x.cx)/8));
		gotoxy(62, 24);cprintf("%2d", ((regs.x.dx)/8));


		//if none of the mouse button is clicked ???
		if((regs.x.bx)==0)
		  {
			gotoxy(36, 24);cprintf("None ");
		  }//end of if mouse left button is clicked

		//check else if mouse left button is clicked ???
		else if((regs.x.bx)==1)
		  {
			hide_mouse();
			textcolor(random(16));
			gotoxy((regs.x.cx/8)+1, (regs.x.dx/8)+1);
			cprintf("Û");
			show_mouse();

			textcolor(15);
			gotoxy(36, 24);cprintf("Left ");
			delay(10);//wait for a movement
		  }//end of if mouse left button is clicked

		//check else if mouse right button is clicked ???
		else if((regs.x.bx)==2)
		  {
			hide_mouse();
			textcolor(0);
			gotoxy((regs.x.cx/8)+1, (regs.x.dx/8)+1);
			cprintf("Û");
			show_mouse();

			textcolor(15);
			gotoxy(36, 24);cprintf("Right");
			delay(10);//wait for a movement
		  }//end of if mouse right button is clicked

		//check else if both mouse buttons are clicked ???
		else if((regs.x.bx)==3)
		  {
			gotoxy(36, 24);cprintf("Both ");
			delay(10);//wait for a movement
		  }//end of if both mouse buttons are clicked

	    }while(!kbhit());//loop goes on until a key is pressed

  //before quitting you
  //should hide the mouse.
  hide_mouse();

}//end of main program

  hide_mouse;
  get_mouse_data;
  set_mouse_pos;
  set_mouse_horizontal_minmax;
  set_mouse_vertical_minmax;
  set_mouse_ratio;
  free_mouse_in_text_mode;
  getch();
}                         */
/////////////////////////////////////////////////////////////////////////////
void draw_screen(void)
{
  textbackground(0);
  clrscr();
  textcolor(15);
  textbackground(4);
  cprintf("  Sample Program For Mouse Interface In C/C++        ");
  textcolor(14);
  cprintf("By: Muhammad Uneeb Walayat");
  textcolor(15);

  for(short int r = 1; r<=23; r++)
     {
	  for(short int c = 1; c<=80; c+=79)
	     {
	       gotoxy(c, r);
	       cprintf(" ");
	     }
     }

  gotoxy(1, 24);
  cprintf("                    Button Click = None           (x=   , y=   )                ");
}//end of draw_screen()

//////////////////////////////////////////////////////////////////////////////////////////
void initialize_mouse(void)
{

   //for initializing the mouse
   //     - place value 0 in AX register.
   //     - call the mouse interrupt.
   regs.x.ax = 0;
   int86(0x33, &regs, &regs);

   //if mouse driver is not installed
   //then prompt the error message.
   if(regs.x.ax==0)
     {
	textbackground(0);
	clrscr();
	printf("\nMouse Driver not installed.");
	printf("\nPress any key to exit the program ...");

	getch();//keep the message on the screen until any key is pressed

	exit(1);//terminates the program

     }//if mouse driver is not installed

}//end of initialize_mouse

//////////////////////////////////////////////////////////////////////////////////////

void show_mouse(void)
{

   //for showing the mouse
   //     - place value 1 in AX register.
   //     - call the mouse interrupt.
   regs.x.ax = 1 ;
   int86(0x33, &regs, &regs);

}//end of show_mouse

//////////////////////////////////////////////////////////////////////////////////////

void hide_mouse(void)
{

   //for hiding the mouse
   //     - place value 2 in AX register.
   //     - call the mouse interrupt.
   regs.x.ax = 2 ;
   int86(0x33, &regs, &regs);

}//end of hide_mouse

//////////////////////////////////////////////////////////////////////////////////////

void get_mouse_data(void)
{

   //for getting the mouse data
   //     - place value 3 in AX register.
   //     - call the mouse interrupt.
   regs.x.ax = 3;
   int86(0x33, &regs, &regs);

}//end of get_mouse_data

//////////////////////////////////////////////////////////////////////////////////////

void set_mouse_pos(int xpos, int ypos)
{
   //for setting mouse to a particular place
   //     - place value 4 in AX register.
   //     - place new x location in CX register.
   //     - place new y location in DX register.
   //     - call the mouse interrupt.

   regs.x.ax = 4;
   regs.x.cx = xpos*8; //multiply by 8 to adjust for the mouse driver
   regs.x.dx = ypos*8; //multiply by 8 to adjust for the mouse driver
   int86(0x33, &regs, &regs);
}//end of set_mouse_pos

//////////////////////////////////////////////////////////////////////////////////////

void set_mouse_horizontal_minmax(int xmin, int xmax)
{

   //for setting mouse horizontal limits
   //the mouse will move in the specified
   //region only and not beyond that unless
   //and until you free it by calling the
   //free function given below(each for TXT and GRPH.)
   //     - place value 7 in AX register.
   //     - place x minimum value in CX register.
   //     - place x maximum value in DX register.
   //     - call the mouse interrupt.

   regs.x.ax = 7;
   regs.x.cx = xmin*8;	//multiply by 8 to adjust for the mouse driver
   regs.x.dx = xmax*8;  //multiply by 8 to adjust for the mouse driver
   int86(0x33, &regs, &regs);
}//end of set_mouse_horizontal_minmax

//////////////////////////////////////////////////////////////////////////////////////

void set_mouse_vertical_minmax(int ymin, int ymax)
{

   //for setting mouse vertical limits
   //the mouse will move in the specified
   //region only and not beyond that unless
   //and until you free it by calling the
   //free function given below(each for TXT and GRPH.)
   //     - place value 8 in AX register.
   //     - place y minimum value in CX register.
   //     - place y maximum value in DX register.
   //     - call the mouse interrupt.

   regs.x.ax = 8;
   regs.x.cx = ymin*8;	//multiply by 8 to adjust for the mouse driver
   regs.x.dx = ymax*8;	//multiply by 8 to adjust for the mouse driver
   int86(0x33, &regs, &regs);
}//end of set_mouse_vertical_minmax

////////////////////////////////////////////////////////////////////////////////

void set_mouse_ratio(int x_ratio, int y_ratio)
{

   //for setting mouse movement ratio
   //     - place value 15(equal to 15 Hex) in AX register.
   //     - place x ratio value in CX register.
   //     - place y ratio value in DX register.
   //     - call the mouse interrupt.
   regs.x.ax = 0x0F;
   regs.x.cx = x_ratio;
   regs.x.dx = y_ratio;
   int86(0x33, &regs, &regs);
}//end of set_mouse_ratio

////////////////////////////////////////////////////////////////////////////////

void restrict_mouse(int xpmin, int ypmin, int xpmax, int ypmax)
{

  //for restricting mouse movement to a particular screen area
  // - this function used the above specified functions.

  set_mouse_horizontal_minmax( xpmin, xpmax);
  set_mouse_vertical_minmax( ypmin, ypmax);
}//end of restrict_mouse

/////////////////////////////////////////////////////////////////////////////////

void free_mouse_in_text_mode(void)
{

  //set free the mouse so that it can
  //move on whole screen.
  // - this function used the above specified functions.

  set_mouse_horizontal_minmax( 1, 80);
  set_mouse_vertical_minmax( 1, 24);
}//end of free_mouse_in_text_mode

//////////////////////////////////////////////////////////////////////////////