I can not configure to receive events about changing the size of the terminal using ncurses QNX Momentics.
I am using Putyy as a terminal and data is transmitted through the COM port.
My question is how to realize the reception of screen change events when using a remote terminal?
FILE* fcons = fopen("/dev/ser1", "r+");
SCREEN* term = newterm("xterm-r5", fcons, fcons);
int y = 0, x = 0;
//if(y < 24 || x < 80)
// resizeterm(24, 80);
flushinp();
main_scr = newwin(24, 80, 0, 0);
head_scr = subwin(main_scr, 3, 80, 0, 0);
prompt_scr = subwin(main_scr, 1, 9, 3, 2);
cursor_scr = newwin(1, 60, 3, 6);
output_scr = subwin(main_scr, 18, 76, 5, 2);
keypad(cursor_scr, TRUE);
int f = mousemask(ALL_MOUSE_EVENTS, NULL);
chtype temp_ch = 0;
while(KEY_RESIZE == temp_ch)
temp_ch = wgetch(cursor_scr);
return 0;
A plain serial-port connection like that won't send a SIGWINCH. In other configurations, e.g., telnet, that's done as a result of NAWS (negotiations about window size--I dont't see a duplicate). Your application could poll for this by doing what the resize program does, plus a little more, e.g.,
- save the cursor-position
- move the cursor to a very-far-off lower-right corner
- ask the terminal where the cursor really is
- wait for the response, to get the actual screensize
- set the terminal's screensize using a system call
- restore the cursor position
- send a
SIGWINCH to yourself
Unlike resize, that would be done inside your program, so it would have to save/restore the cursor position (to avoid confusing ncurses). Keep in mind that ncurses has set the terminal to raw mode, so that part of the initialization would not be needed.
