Hello everybody, I had edited a example code given according to myself.It has 2 menu with same options and i want to change the options of both the menu and when any of the option is selected,it must be printed on the message bar,但我不能这样做。我面临2个问题。i) 无法更改 2 个菜单的选项。ii) 所选项目未打印在消息栏上。
需要帮助。下面是我从链接 www.linuxfocus.org/English/March2002/article233.shtml t 编辑的代码
这是我的代码。
#include <curses.h>
#include <stdlib.h>
#define ENTER 10
#define ESCAPE 27
void init_curses()
{
initscr();
start_color();
init_pair(1,COLOR_WHITE,COLOR_BLUE);
init_pair(2,COLOR_BLUE,COLOR_WHITE);
init_pair(3,COLOR_RED,COLOR_WHITE);
curs_set(0);
noecho();
keypad(stdscr,TRUE);
}
void draw_menubar(WINDOW *menubar)
{
wbkgd(menubar,COLOR_PAIR(2));
waddstr(menubar,"PARALLEL");
wattron(menubar,COLOR_PAIR(3));
waddstr(menubar,"CON.");
wattroff(menubar,COLOR_PAIR(3));
wmove(menubar,0,20);
waddstr(menubar,"SERIAL");
wattron(menubar,COLOR_PAIR(3));
waddstr(menubar,"CON.");
wattroff(menubar,COLOR_PAIR(3));
}
WINDOW **draw_menu(int start_col)
{
WINDOW **items;
items=(WINDOW **)malloc(9*sizeof(WINDOW *));
items[0]=newwin(10,19,1,start_col);
wbkgd(items[0],COLOR_PAIR(2));
box(items[0],ACS_VLINE,ACS_HLINE);
items[1]=subwin(items[0],1,17,2,start_col+1);
wprintw(items[1],"Shailendra singh",1);
items[2]=subwin(items[0],1,17,3,start_col+1);
wprintw(items[2],"THIVNENT TECH",2);
items[3]=subwin(items[0],1,17,4,start_col+1);
wprintw(items[3],"THINCLIENT",3);
items[4]=subwin(items[0],1,17,5,start_col+1);
wprintw(items[4],"SOLARCOMPUTING",4);
items[5]=subwin(items[0],1,17,6,start_col+1);
wprintw(items[5],"TECHNOCRATS",5);
items[6]=subwin(items[0],1,17,7,start_col+1);
wprintw(items[6],"SENSORS",6);
items[7]=subwin(items[0],1,17,8,start_col+1);
wprintw(items[7],"NCURSESLIB",7);
items[8]=subwin(items[0],1,17,9,start_col+1);
wprintw(items[8],"GCC COMPILER",8);
wbkgd(items[1],COLOR_PAIR(1));
wrefresh(items[0]);
return items;
}
void delete_menu(WINDOW **items,int count)
{
int i;
for (i=0;i<count;i++)
delwin(items[i]);
free(items);
}
int scroll_menu(WINDOW **items,int count,int menu_start_col)
{
int key;
int selected=0;
while (1) {
key=getch();
if (key==KEY_DOWN || key==KEY_UP) {
wbkgd(items[selected+1],COLOR_PAIR(2));
wnoutrefresh(items[selected+1]);
if (key==KEY_DOWN) {
selected=(selected+1) % count;
} else {
selected=(selected+count-1) % count;
}
wbkgd(items[selected+1],COLOR_PAIR(1));
wnoutrefresh(items[selected+1]);
doupdate();
} else if (key==KEY_LEFT || key==KEY_RIGHT) {
delete_menu(items,count+1);
touchwin(stdscr);
refresh();
items=draw_menu(20-menu_start_col);
return scroll_menu(items,8,20-menu_start_col);
} else if (key==ESCAPE) {
return -1;
} else if (key==ENTER) {
return selected;
}
}
}
int main()
{
int key;
WINDOW *menubar,*messagebar;
init_curses();
bkgd(COLOR_PAIR(1));
menubar=subwin(stdscr,1,80,0,0);
messagebar=subwin(stdscr,1,79,23,1);
draw_menubar(menubar);
move(2,1);
printw("Press F1 or F2 to open the menus. ");
printw("ESC quits.");
refresh();
do {
int selected_item;
WINDOW **menu_items;
key=getch();
werase(messagebar);
wrefresh(messagebar);
if (key==KEY_F(1)) {
menu_items=draw_menu(0);
selected_item=scroll_menu(menu_items,8,0);
delete_menu(menu_items,9);
if (selected_item<0)
wprintw(messagebar,"You haven't selected any item.");
else if(selected_item=1)
wprintw(messagebar,"You have selected menu SHAILENDRA SINGH.",1);
else if(selected_item=2)
wprintw(messagebar,"You have selected menu THINVENT TECH.",2);
else if(selected_item=3)
wprintw(messagebar,"You have selected menu THINCLIENT.",3);
else if(selected_item=4)
wprintw(messagebar,"You have selected menu SOLAR COMPUTING",4);
else if(selected_item=5)
wprintw(messagebar,"You have selected menu TECHNOCRATS.",5);
else if(selected_item=6)
wprintw(messagebar,"You have selected menu SENSORS.",6);
else if(selected_item=7)
wprintw(messagebar,"You have selected menu NCURSESLIB.",7);
else if(selected_item=8)
wprintw(messagebar,"You have selected menu GCCCOMPILER.",8);
touchwin(stdscr);
refresh();
}
}
while (key!=ESCAPE);
delwin(menubar);
delwin(messagebar);
endwin();
return 0;
}