Ncurses - “move” and its deveratives delete screen contents
I'm a newbie programmer and am currently writing a simple Ncurses application, but i faced such a problem - calling the move function or mvwadch as example cleans the window contents after the place i'm moving to.
The code is like:
#include <string>
#include <ncurses.h>
void function(WINDOW* win)
{
std::string somestring = "Test";
waddstr(win, somestring.c_str());
wmove(win , 0, 1);
wrefresh(win);
}
WINDOW* win_ = initscr();
int main()
{
function(win_);
wgetch(win_);
endwin();
}
It leaves only "T", as example, if somestring is "Test".
P.S. Sorry for possible bad English and c++.
c++ ncurses
asked Jan 19 at 11:46
WhertWhert
114
add a comment |
I'm a newbie programmer and am currently writing a simple Ncurses application, but i faced such a problem - calling the move function or mvwadch as example cleans the window contents after the place i'm moving to.
The code is like:
#include <string>
#include <ncurses.h>
void function(WINDOW* win)
{
std::string somestring = "Test";
waddstr(win, somestring.c_str());
wmove(win , 0, 1);
wrefresh(win);
}
WINDOW* win_ = initscr();
int main()
{
function(win_);
wgetch(win_);
endwin();
}
It leaves only "T", as example, if somestring is "Test".
P.S. Sorry for possible bad English and c++.
c++ ncurses
asked Jan 19 at 11:46
WhertWhert
114
1
That's not an MCVE.
– Thomas Dickey
Jan 19 at 14:01
Oh, sorry, just waked up and forgotten to include the headers.
– Whert
Jan 19 at 23:09
add a comment |
I'm a newbie programmer and am currently writing a simple Ncurses application, but i faced such a problem - calling the move function or mvwadch as example cleans the window contents after the place i'm moving to.
The code is like:
#include <string>
#include <ncurses.h>
void function(WINDOW* win)
{
std::string somestring = "Test";
waddstr(win, somestring.c_str());
wmove(win , 0, 1);
wrefresh(win);
}
WINDOW* win_ = initscr();
int main()
{
function(win_);
wgetch(win_);
endwin();
}
It leaves only "T", as example, if somestring is "Test".
P.S. Sorry for possible bad English and c++.
c++ ncurses
asked Jan 19 at 11:46
WhertWhert
114
I'm a newbie programmer and am currently writing a simple Ncurses application, but i faced such a problem - calling the move function or mvwadch as example cleans the window contents after the place i'm moving to.
The code is like:
#include <string>
#include <ncurses.h>
void function(WINDOW* win)
{
std::string somestring = "Test";
waddstr(win, somestring.c_str());
wmove(win , 0, 1);
wrefresh(win);
}
WINDOW* win_ = initscr();
int main()
{
function(win_);
wgetch(win_);
endwin();
}
It leaves only "T", as example, if somestring is "Test".
P.S. Sorry for possible bad English and c++.
c++ ncurses
c++ ncurses
asked Jan 19 at 11:46
WhertWhert
114
asked Jan 19 at 11:46
WhertWhert
114
edited Jan 19 at 23:57
Whert
asked Jan 19 at 11:46
WhertWhert
114
asked Jan 19 at 11:46
WhertWhert
114
asked Jan 19 at 11:46
WhertWhert
114
114
1
That's not an MCVE.
– Thomas Dickey
Jan 19 at 14:01
Oh, sorry, just waked up and forgotten to include the headers.
– Whert
Jan 19 at 23:09
add a comment |
1
That's not an MCVE.
– Thomas Dickey
Jan 19 at 14:01
Oh, sorry, just waked up and forgotten to include the headers.
– Whert
Jan 19 at 23:09
1
1
That's not an MCVE.
– Thomas Dickey
Jan 19 at 14:01
That's not an MCVE.
– Thomas Dickey
Jan 19 at 14:01
Oh, sorry, just waked up and forgotten to include the headers.
– Whert
Jan 19 at 23:09
Oh, sorry, just waked up and forgotten to include the headers.
– Whert
Jan 19 at 23:09
add a comment |
1 Answer
1
active
oldest
votes
Your program doesn't wait for user input (e.g., a call to getch) and exits immediately without calling endwin. Because ncurses initializes the terminal to raw mode, that leaves the terminal in raw mode, making the normal translation of newline to carriage-return/line-feed by your shell not work immediately (though most shells recover from this by resetting the mode back to cooked). That causes some text to be overwritten since (instead of advancing to a newline) the shell prompt is written on the same line as the text-message.
answered Jan 19 at 23:33
Thomas DickeyThomas Dickey
31.7k62760
add a comment |
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1 Answer
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1 Answer
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active
oldest
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oldest
votes
Your program doesn't wait for user input (e.g., a call to getch) and exits immediately without calling endwin. Because ncurses initializes the terminal to raw mode, that leaves the terminal in raw mode, making the normal translation of newline to carriage-return/line-feed by your shell not work immediately (though most shells recover from this by resetting the mode back to cooked). That causes some text to be overwritten since (instead of advancing to a newline) the shell prompt is written on the same line as the text-message.
answered Jan 19 at 23:33
Thomas DickeyThomas Dickey
31.7k62760
add a comment |
Your program doesn't wait for user input (e.g., a call to getch) and exits immediately without calling endwin. Because ncurses initializes the terminal to raw mode, that leaves the terminal in raw mode, making the normal translation of newline to carriage-return/line-feed by your shell not work immediately (though most shells recover from this by resetting the mode back to cooked). That causes some text to be overwritten since (instead of advancing to a newline) the shell prompt is written on the same line as the text-message.
answered Jan 19 at 23:33
Thomas DickeyThomas Dickey
31.7k62760
add a comment |
Your program doesn't wait for user input (e.g., a call to getch) and exits immediately without calling endwin. Because ncurses initializes the terminal to raw mode, that leaves the terminal in raw mode, making the normal translation of newline to carriage-return/line-feed by your shell not work immediately (though most shells recover from this by resetting the mode back to cooked). That causes some text to be overwritten since (instead of advancing to a newline) the shell prompt is written on the same line as the text-message.
answered Jan 19 at 23:33
Thomas DickeyThomas Dickey
31.7k62760
Your program doesn't wait for user input (e.g., a call to getch) and exits immediately without calling endwin. Because ncurses initializes the terminal to raw mode, that leaves the terminal in raw mode, making the normal translation of newline to carriage-return/line-feed by your shell not work immediately (though most shells recover from this by resetting the mode back to cooked). That causes some text to be overwritten since (instead of advancing to a newline) the shell prompt is written on the same line as the text-message.
answered Jan 19 at 23:33
Thomas DickeyThomas Dickey
31.7k62760
answered Jan 19 at 23:33
Thomas DickeyThomas Dickey
31.7k62760
answered Jan 19 at 23:33
Thomas DickeyThomas Dickey
31.7k62760
answered Jan 19 at 23:33
Thomas DickeyThomas Dickey
31.7k62760
31.7k62760
add a comment |
add a comment |
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1
That's not an MCVE.
– Thomas Dickey
Jan 19 at 14:01
Oh, sorry, just waked up and forgotten to include the headers.
– Whert
Jan 19 at 23:09