verillo
10 de Mayo del 2004

Necesito saber como le hago para q cuando haga un programa q me despliegue un menu y de ahi tenga q escoger alguna opcion, pueda acceder al menu con las felchas de desplazamiento. ¿alguen sabe eso? de como acceder al menu con las flechas de desplazamiento??????? por favor ayudenme gracias

noel solw
10 de Mayo del 2004

Te envio un programa que hace lo que tu pides:

// program Menu.cpp

#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include <conio.h>

const int LEN = 44;
const int MEDIUM = LEN/2;
const int EXIT = -1;
const int ENTER = 'r';
const int ESC = '33';
const int FRA = LIGHTCYAN;
const int LGO = LIGHTGREEN;
const int RND = LIGHTMAGENTA;
const int MAN = LIGHTMAGENTA;
const int JUL = YELLOW;
const int SPR = YELLOW;
const int FIRST = 5;
const int SECOND = 43;
const int FROW = 2;

struct parameters
{
char *program,
*description;
int x,
y,
color;
};

const parameters p[LEN] = // ‰˜ˆŽ˜”„ Š˜’Ž

{{"Bmange", "BlankMange Curve", FIRST , FROW+0 , FRA}, // 1 //
{"Evolute", "Evolute Spiral", FIRST , FROW+1 , SPR}, // 2 //
{"Archim", "Spiral of Archimedes", FIRST , FROW+2 , SPR}, // 3 //
{"Log", "Logarithmic Spiral", FIRST , FROW+3 , SPR}, // 4 //
{"HFractal", "H Fractal", FIRST , FROW+4 , FRA}, // 5 //
{"Cantor", "Cantor's Comb", FIRST , FROW+5 , FRA}, // 6 //
{"BiTree", "Binary Tree - 90ø", FIRST , FROW+6 , FRA}, // 7 //
{"BTree", "Binary Tree - 45ø", FIRST , FROW+7 , FRA}, // 8 //
{"TerTree", "Ternary Tree", FIRST , FROW+8 , FRA}, // 9 //
{"Sierp", "Sierpinski's Sieve", FIRST , FROW+9, FRA}, // 10 //
{"Koch", "Koch Fractal", FIRST , FROW+10, FRA}, // 11 //
{"KochIsla", "Koch Island", FIRST , FROW+12, FRA}, // 12 //
{"KochIn", "Koch Inside Out", FIRST , FROW+13, FRA}, // 13 //
{"Mink", "Minkovski Sausage", FIRST , FROW+14, FRA}, // 14 //
{"MinkIsla", "Minkovski Island", FIRST , FROW+15, FRA}, // 15 //
{"Dragon", "Dragon Curve", FIRST , FROW+16, FRA}, // 16 //
{"Pascal", "Pascal's Triangle", FIRST , FROW+17, FRA}, // 17 //
{"Star", "Star Fractal", FIRST , FROW+18, FRA}, // 18 //
{"MSet", "Mandelbrot Set", FIRST , FROW+19, MAN}, // 19 //
{"Sinus", "Julia Sinus", FIRST , FROW+20, JUL}, // 20 //
{"Cosinus", "Julia Cosinus", FIRST, FROW+21, JUL}, // 21 //
{"Rabbit", "Julia Rabbit Fractal", FIRST, FROW+22, JUL}, // 22 //
{"Drago", "Julia Dragon", SECOND, FROW+0, JUL}, // 23 //
{"Cloud", "Julia Cloud Fractal", SECOND, FROW+1, JUL}, // 24 //
{"Torn", "Torn Square Curve", SECOND, FROW+2, LGO}, // 25 //
{"MandTree", "Mandelbrot Tree", SECOND, FROW+3, LGO}, // 26 //
{"Lung", "Lung Curve", SECOND, FROW+4, LGO}, // 27 //
{"Levy", "Levy's Fractal - 'C'", SECOND, FROW+5, LGO}, // 28 //
{"LevyTap", "Levy's Tapestry", SECOND, FROW+6, LGO}, // 29 //
{"IceSqr", "Ice Square Curve", SECOND, FROW+7, LGO}, // 30 //
{"SiFill", "Sierpinski's Filling", SECOND, FROW+8, LGO}, // 31 //
{"Hilbert", "Hilbert's Filling", SECOND, FROW+9, LGO}, // 32 //
{"Square", "Square Star Fractal", SECOND, FROW+10, LGO}, // 33 //
{"PytaTree", "Pythagoras Tree", SECOND, FROW+12, LGO}, // 34 //
{"LopSided", "Lopsided Tree", SECOND, FROW+13, LGO}, // 35 //
{"Alternat", "Alternating Tree", SECOND, FROW+14, LGO}, // 36 //
{"MathTree", "Mathematical Tree", SECOND, FROW+15, LGO}, // 37 //
{"RandTree", "Random Tree", SECOND, FROW+16, LGO}, // 38 //
{"TriTree", "Triangular Tree", SECOND, FROW+17, LGO}, // 39 //
{"LeafTree", "Leaf Like Tree", SECOND, FROW+18, LGO}, // 40 //
{"RndSierp", "Randomal Sierpinski", SECOND, FROW+19, RND}, // 41 //
{"Carpet", "Sierpinski's Carpet", SECOND, FROW+20, RND}, // 42 //
{"Bifur", "Bifurcation Diagram", SECOND, FROW+21, RND}, // 43 //
{"Forest", "Random Trees Forest", SECOND, FROW+22, RND}}; // 44 //


void WriteLn(int i, int sw)
{
gotoxy(p[i].x, p[i].y);
if (sw)
{
textcolor(LIGHTRED);
textbackground(BLACK);
cprintf("%2d", i+1);
textcolor(p[i].color);
cprintf("%10s", p[i].program);
textcolor(LIGHTGRAY);
cprintf("%22s", p[i].description);
}
else
{
textcolor(WHITE);
textbackground(RED);
cprintf("%2d", i+1);
cprintf("%10s", p[i].program);
cprintf("%22s", p[i].description);
}
}

void DisplayMenu()
{
clrscr();
textbackground(LIGHTGRAY);
for (int i = 0; i < 2000; i++)
putch(' ');
textcolor(BLACK);
gotoxy(5,1);
cputs("Fractal's Programs Menu:");
gotoxy(5,25);
cputs("select with arrows keys and press enter -- press 'Esc' to exit");
for (i = 0; i < LEN; i++)
WriteLn(i, 1);
}

int GetChoice(int k)
{
char key = '*';
int now = k,
old = k;

WriteLn(old, 0);
for(;(key != ENTER) && (key != ESC);)
{

key = getch();
switch(key)
{
case ESC : now = EXIT; // escape
break;
case '6' : // arrow rigth
case 'M' : if (old < MEDIUM)
now = old + MEDIUM;
else
now = old - MEDIUM;
break;
case '2' : // arrow down
case 'P' : if (old == MEDIUM-1)
now = 0;
else if (old == LEN-1)
now = MEDIUM;
else
now = old + 1;
break;
case '4' : // arrow left
case 'K' : if (old < MEDIUM)
now = old + MEDIUM;
else
now = old - MEDIUM;
break;
case '8' : // arrow up
case 'H' : if (old == 0)
now = MEDIUM-1;
else if (old == MEDIUM)
now = LEN-1;
else
now = old - 1;
break;
}
if ((old != now) && (now != EXIT))
{
WriteLn(old, 1);
WriteLn(now, 0);
old = now;
}
}
return now;
}

void main()
{
int choice = 0;
_setcursortype(_NOCURSOR);
for(;choice != EXIT;)
{
DisplayMenu();
choice = GetChoice(choice);
if (choice != EXIT)
{
textcolor(WHITE);
textbackground(BLACK);
clrscr();
printf("elegiste el programa %s.cpp n", p[choice].program);
getch();
}
}
textcolor(WHITE);
textbackground(BLACK);
_setcursortype(_NORMALCURSOR);
clrscr();
gotoxy(20,10);
cputs("end of Menu Program - goob bye ! ! !nnn");
}