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


int 	x,y;

//*********************************************************
//                 Constants Block
//*********************************************************
enum xKEYS {
		L_ARROW = 75 ,
		R_ARROW = 77 ,
		U_ARROW = 72 ,
		D_ARROW = 80 ,
		ALT_O   = 24 ,
		ALT_N   = 49 ,
		ALT_S   = 31 ,
		ALT_Q   = 16 ,
		ALT_H   = 35 ,
		ALT_C   = 46 ,
		F4      = 62 ,
		};

enum SCREENSTATS{
			MAXX = 80      ,
			MAXY = 24      ,
			AREAX = MAXX-1 ,
			AREAY = MAXY-1 ,
			MIDX = MAXX/2  ,
			MIDY = MAXY/2  ,
		};





//*********************************************************
//                 Function ProtoTypes
//*********************************************************

int open_file();
int create_new_file();
int _Row(int limit,char msgs[],int pos1,char msgs2[],int pos2,char msgs3[],int pos3);




//*********************************************************
//		           main() Program
//*********************************************************

int main()
{

	// VARAIABLES
	int		key;
	int		c;
	char*	msgs[] = {
				 "Alt + N (NewFile)"
				,"Alt + O (Open)"
				,"Alt + S (Save)"
				,"Alt + H (Help)"
				,"Alt + C (Close)"
				,"Alt + Q (Quit)"
				,"\nDo you want to save the Document"
				,"\nDo you wish to contiue "
				,"\n Y for Yes and N for No"

			 };

	int keysize;

	keysize=(sizeof msgs) / (sizeof msgs[0]);
	x=y=0;

	clrscr();
	textmode(3);

	 gotoxy(0,0);
			_Row(40,msgs[0],4,msgs[1],15,msgs[2],24);

	 gotoxy(MAXX,MAXY);
			_Row(40,msgs[3],4,msgs[4],15,msgs[5],24);

	textcolor(LIGHTGREEN);
	textbackground(BLACK);

	x=0,y=2;
	window(0,2,AREAX,AREAY);
	gotoxy(x,y);
	 /*
		The problem is with the above gotoxy()
		It is not returning to the location (0,1)
		inspite it remains at the last line
	 */

  while( (key=getch()) != 27 )
	if( key == 0 )
		switch(getch())  // Incomplete Part ... Skip This whole Block
		{
			case L_ARROW:
				if( 0 < x && y > 1)
				  gotoxy(--x,y);
				break;
			case R_ARROW:
				if( MAXX > x && y < 1 )
				  gotoxy(++x,y);
				break;
			case U_ARROW:
				if(y>1)
				  gotoxy(x,--y);
				break;
			case D_ARROW:
				gotoxy(x,++y);
				break;
			case ALT_S:
				printf(msgs[6]);
				break;
			case ALT_O:
			case ALT_N:
			case ALT_Q:
			case ALT_H:
			case ALT_C:
			case F4:
				exit(0);
			defealt:
				break;

		}
	else
	{
	   if(key == 0x0a || key == 0x0d)
		   if(x != MAXX && y !=MAXY)

			   putchar('\n');

	   if(key == 0x08)  // Backspace --- BIGGEST PROBLEM FOR ME, NOT SOLVED YET
	   {

			x=wherex();
			y=wherey();
			gotoxy(x,y);
			cprintf("%c", ' ');
			gotoxy(x,y);

		}

	  x=wherex();
	  y=wherey();

	  }

  return EXIT_SUCCESS;
}

//************************************************************************
//			   Function Definations
//************************************************************************

int newfile(char* fname,int key)
{
   FILE* in;
	  if ((in = fopen(fname, "w+")) == NULL)
	  {
		fprintf(stderr, "Cannot create new file.\n");
		return 1;
	  }

}


int _Row(int limit,char msgs[],int pos1,char msgs2[],int pos2,char msgs3[],int pos3)
{
  int c;
		for(c=0; c < limit ;c++)
		{
			textcolor(BLACK);
			textbackground(WHITE);

			if( c == pos1 )
				{
					textcolor(RED);
					textbackground(WHITE);
					cprintf(msgs);
				}
			else if( c == pos2 )
				{
					textcolor(RED);
					textbackground(WHITE);
					cprintf(msgs2);
				}
			else if( c == pos3 )
				{
					textcolor(RED);
					textbackground(WHITE);
					cprintf(msgs3);
				 }
			else
				{
					y=wherey();
					  if(y != 2)
						cputs(" ");
					  else
						break;
				 }
		}
}