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/*
2008-12-25 : mises au normes C90
2007-05-06 : version initiale
*/
#include <conio2.h>
#include <stdio.h>
#include <string.h>
#define DBG 1
static int count (char const **as, size_t * p_len_max)
{
int n = 0;
size_t len_max = 0;
while (as[n] != NULL)
{
#if DBG
printf ("p=%p\n", as[n]);
#endif
{
size_t len = strlen (as[n]);
if (len > len_max)
{
len_max = len;
}
n++;
}
}
if (p_len_max != NULL)
{
*p_len_max = len_max;
}
return n;
}
static void display_nrm (int x, int y, char const **as, int sel,
size_t len_max)
{
gotoxy (x, y + sel);
textbackground (CYAN);
textcolor (BLACK);
cprintf (" %-*s ", len_max, as[sel]);
}
static void display_sel (int x, int y, char const **as, int sel,
size_t len_max)
{
gotoxy (x, y + sel);
textbackground (RED);
textcolor (WHITE);
cprintf (" %-*s ", len_max, as[sel]);
}
static void display (int x, int y, char const **as, int n, size_t len_max)
{
int i;
for (i = 0; i < n; i++)
{
display_nrm (x, y, as, i, len_max);
}
}
int menu_vert (int x, int y, char const **as)
{
int selection = 0;
size_t len_max;
int selection_max = count (as, &len_max);
int quitter = 0;
#if DBG
printf ("selection_max=%d len_max=%d\n", selection_max, len_max);
#endif
{
struct text_info ti;
gettextinfo (&ti);
display (x, y, as, selection_max, len_max);
display_sel (x, y, as, selection, len_max);
do
{
int c = getch ();
switch (c)
{
case 0:
/* certains caracteres etendus */
break;
case 224:
/* [Windows] d'autres caracteres etendus */
if (kbhit ())
{
int cx = getch ();
switch (cx)
{
case 72: /* UP */
display_nrm (x, y, as, selection, len_max);
if (selection > 0)
{
selection--;
}
else
{
selection = selection_max - 1;
}
display_sel (x, y, as, selection, len_max);
break;
case 80: /* DOWN */
display_nrm (x, y, as, selection, len_max);
if (selection < selection_max - 1)
{
selection++;
}
else
{
selection = 0;
}
display_sel (x, y, as, selection, len_max);
break;
default:
#if DBG
printf ("cx=%d\n", cx);
#else
;
#endif
}
}
break;
case 27:
/* abandon */
quitter = 1;
selection = -1;
break;
case 13:
/* validation */
quitter = 1;
break;
}
}
while (!quitter);
textattr (ti.normattr);
}
return selection + 1;
}
int main (void)
{
char const *as[] = {
"creer",
"modifier",
"supprimmer",
"quitter",
NULL,
};
int choix = menu_vert (1, 1, as);
printf ("choix = %d\n", choix);
return 0;
} |
