Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
729 views
in Technique[技术] by (71.8m points)

c - get the text in the display with ncurses

Is there any way to get back the characters outputted into a variable on ncurses ?

let's say I do:

printw("test");

then I want to be able to:

somefunc(strbuffer);
printf("%s",strbuffer); // test

I need a function to get back all characters on the screen into a variable, scr_dump get's close but the output format is unreadable..

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

If you put stuff on the screen using curses functions (e.g. addch, mvaddch, addstr) you can use inchstr) and related functions to read the characters from the screen (extracting them with AND'ing the returned value with A_CHARTEXT).

However, if you use printf or any other non-curses method of puting text on the screen (including a system call to another program that uses curses) you will not be able to read the content of the screen.

Curses maintains the current screen contents internally and the inchstr functions use the internal representation of the screen to find the current contents.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...