如何在ncurses屏幕中输入单词?

问题描述

我试图先使用raw_input()函数，但是发现它与ncurses兼容.
然后我尝试了window.getch()函数，我可以在屏幕上键入和显示字符，但是无法实现输入.如何在ncurses中输入单词并可以使用if语句对其进行评估?

I was trying to use raw_input() function first, but find it in compatible with ncurses.
Then I tried window.getch() function, I can type and show characters on screen, but can't realize input. How can I input a word in ncurses and can use if statement to evaluate it?

例如，我想在ncurses中实现这一点:

For example, I wanna realize this in ncurses:

import ncurses
stdscr = curses.initscr()

# ???_input = "cool" # this is the missing input method I want to know
if ???_input == "cool":
    stdscr.addstr(1,1,"Super cool!")
stdscr.refresh()
stdscr.getch()
curses.endwin()

推荐答案

函数raw_input( )在curses模式下不起作用，getch()方法返回一个整数.它代表所按下键的ASCII码.如果您想从提示符下扫描字符串，则将不起作用.您可以使用getstr函数:

Function raw_input( ) doesn't works in curses mode, The getch() method returns an integer; it represents the ASCII code of the key pressed. The will not work if you wants to scan string from prompt. You can make use of getstr function:

还有一种检索整个字符串的方法，getstr()

There’s also a method to retrieve an entire string, getstr()

curses.echo()            # Enable echoing of characters

# Get a 15-character string, with the cursor on the top line
s = stdscr.getstr(0,0, 15)

然后我编写了raw_input函数，如下所示:

And I wrote raw_input function as below:

def my_raw_input(stdscr, r, c, prompt_string):
    curses.echo()
    stdscr.addstr(r, c, prompt_string)
    stdscr.refresh()
    input = stdscr.getstr(r + 1, c, 20)
    return input  #       ^^^^  reading input at next line

称为choice = my_raw_input(stdscr, 5, 5, "cool or hot?")

这是可行的示例:

if __name__ == "__main__":
    stdscr = curses.initscr()
    stdscr.clear()
    choice = my_raw_input(stdscr, 2, 3, "cool or hot?").lower()
    if choice == "cool":
        stdscr.addstr(5,3,"Super cool!")
    elif choice == "hot":
        stdscr.addstr(5, 3," HOT!")
    else:
        stdscr.addstr(5, 3," Invalid input")
    stdscr.refresh()
    stdscr.getch()
    curses.endwin()

输出:

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