如何在获取字符串时按下该转义键 [英] how to find that escape key is pressed while taking the string
问题描述
hi
当接受字符串作为输入时，如何检查转义键是否被按下。
因为如果用户按下我不想收到字符串ESCAPE
键..我使用ascii代码进行比较，但我没有得到任何富有成果的
结果。请帮帮我。
hi
how to check escape key is pressed when accepting the string as input.
Because I do not want to receive a string if user presses the ESCAPE
key.. I used ascii code for comparision but I didn''t get any fruitful
results. Please help me.
推荐答案
文章< 11 **************** ******@g43g2000cwa.googlegroups .com> ;,
sudhir< su ***************** @ gmail.com>写道：
In article <11**********************@g43g2000cwa.googlegroups .com>,
sudhir <su*****************@gmail.com> wrote:
当接受字符串作为输入时，如何检查转义键。
因为如果用户按下ESCAPE
键我不想收到字符串..我使用ascii代码进行比较，但我没有得到任何富有成果的结果。请帮帮我。
how to check escape key is pressed when accepting the string as input.
Because I do not want to receive a string if user presses the ESCAPE
key.. I used ascii code for comparision but I didn''t get any fruitful
results. Please help me.
转义键不可移动;-)
如果你有一个输入字符串，你知道是ASCII（或ISO-8859- *）
然后你可以根据ASCII转义值测试每个字符，你可以用几种不同的方式编码。其中一种方式是
#include< string.h>
#define ESCAPE''\ 027''
.....
if（strchr（STRING，ESCAPE）！= NULL）{/ *你有一个ESCAPE * /}
请注意，您的操作系统或shell可能是正在进行操作。在发送给你之前逃脱
字符。防止发生b / b $ b的机制是特定于操作系统的，并且在特定于您的操作系统的
新闻组中进行了最佳探索。
-
没有人有权通过要求经验证据来摧毁另一个人的信念。 - Ann Landers
The escape key isn''t portable ;-)
If you have an input string that you know to be ASCII (or ISO-8859-*)
then you can test each character against the ASCII escape value, which
you can code in several different ways. One such way would be
#include <string.h>
#define ESCAPE ''\027''
.....
if ( strchr( STRING, ESCAPE ) != NULL ) { /* you got an ESCAPE */ }
Note that your operating system or shell might be "eating" the escape
character before sending it on to you. Mechanisms to prevent that
happening are operating-system specific and best explored in a
newsgroup specific to your operating system.
--
"No one has the right to destroy another person''s belief by
demanding empirical evidence." -- Ann Landers
" sudhir" <苏***************** @ gmail.com>写道：
"sudhir" <su*****************@gmail.com> writes:
当接受字符串作为输入时，如何检查转义键。
因为如果用户按下ESCAPE
键我不想收到字符串..我使用ascii代码进行比较，但我没有得到任何富有成果的结果。请帮帮我。
how to check escape key is pressed when accepting the string as input.
Because I do not want to receive a string if user presses the ESCAPE
key.. I used ascii code for comparision but I didn''t get any fruitful
results. Please help me.
请帮助我们帮助您。如果你要告诉我们你试过的代码
*和*告诉我们它是如何行为不端的，我们可以帮你确定它为什么
没有工作。
如果你想在
用户按ESCAPE时立即终止尝试读取一行，那么就没有可移植的方式来做;请参阅comp.lang.c FAQ中的问题
19.1< http://www.eskimo.com/~scs/C-faq/faq.html>。
Walter Roberson也给了你一些很好的建议。
-
Keith Thompson（The_Other_Keith） ks *** @ mib.org < http://www.ghoti.net/~kst>
圣地亚哥超级计算机中心< *> < http://users.sdsc.edu/~kst>
我们必须做点什么。这是事情。因此，我们必须这样做。
Please help us to help you. If you''ll show us the code you''ve tried
*and* tell us how it misbehaves, we can help you determine why it
doesn''t work.
If you want to terminate the attempt to read a line immediately if the
user presses ESCAPE, there''s no portable way to do that; see question
19.1 in the comp.lang.c FAQ, <http://www.eskimo.com/~scs/C-faq/faq.html>.
Walter Roberson''s also gave you some excellent advice.
--
Keith Thompson (The_Other_Keith) ks***@mib.org <http://www.ghoti.net/~kst>
San Diego Supercomputer Center <*> <http://users.sdsc.edu/~kst>
We must do something. This is something. Therefore, we must do this.
sudhir写道：
当接受字符串作为输入时，如何检查转义键。
因为如果用户按下ESCAPE
键我不想收到字符串..我使用ascii代码进行比较，但我没有得到任何富有成果的结果。请帮助我。
how to check escape key is pressed when accepting the string as input.
Because I do not want to receive a string if user presses the ESCAPE
key.. I used ascii code for comparision but I didn''t get any fruitful
results. Please help me.
你将不得不使用一些系统特定的扩展，所以我建议你在一个致力于任何一个系统的小组中询问
你正在使用。
-
Flash Gordon
生活在有趣的时代。
虽然我的电子邮件地址说垃圾邮件，它是真实的，我读了它。
You will have to use some system specific extension, so I suggest you
ask in a group dedicated to whichever system you are using.
--
Flash Gordon
Living in interesting times.
Although my email address says spam, it is real and I read it.
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