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Column Skipping
by MTK358
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I am trying to make an ncurses command line text editor, but the problem is that for some reason the cursor skips a column near the right edge of the terminal. This for some reason only happens when I refresh the statusbar WINDOW in the beginning.
[code] /* ncurses Column Skipping Test Arrow keys to move cursor, q to quit Compile: gcc editortest.c -lncurses -o editortest */ #include <ncurses.h> void clear_bar(WINDOW* bar) { wclear(bar); int i; for(i=0;i<COLS;i++) waddch(bar, ' '); wmove(bar, 0, 0); } int main(int argc, char** args) { WINDOW* titlebar; WINDOW* statusbar; WINDOW* textarea; initscr(); raw(); refresh(); titlebar = newwin(1, COLS, 0, 0); statusbar = newwin(1, COLS, LINES-1, 0); textarea = newwin(LINES-2, COLS, 1, 0); keypad(textarea, TRUE); wattron(titlebar, A_REVERSE); wattron(statusbar, A_REVERSE); clear_bar(titlebar); clear_bar(statusbar); wclear(textarea); wprintw(titlebar, "Titlebar"); wprintw(statusbar, "Statusbar"); wprintw(textarea, "Test"); wmove(textarea, 0, 0); wrefresh(statusbar); //The cursor will NOT skip a column near the right edge when you comment out this line (???) wrefresh(titlebar); wrefresh(textarea); unsigned long row = 0, col = 0; while(1) { int c = wgetch(textarea); if(c == KEY_UP) row--; if(c == KEY_DOWN) row++; if(c == KEY_LEFT) col--; if(c == KEY_RIGHT) col++; if(c == 'q') break; wclear(textarea); wprintw(textarea, "Test"); wmove(textarea, row, col); wrefresh(textarea); } endwin(); return 0; } [/code] |
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Re: Column Skipping
by Thomas Dickey-2
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On Thu, 10 Sep 2009, MTK358 wrote:
> > I am trying to make an ncurses command line text editor, but the problem is > that for some reason the cursor skips a column near the right edge of the > terminal. This for some reason only happens when I refresh the statusbar > WINDOW in the beginning. What's the actual terminal emulator, and what's $TERM ? (some differ with wrapping behavior - for instance, using PuTTY with TERM=xterm can produce interesting effects). -- Thomas E. Dickey http://invisible-island.net ftp://invisible-island.net _______________________________________________ Bug-ncurses mailing list Bug-ncurses@... http://lists.gnu.org/mailman/listinfo/bug-ncurses |
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Re: Re: Column Skipping
by Thomas Dickey-2
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On Thu, 10 Sep 2009, Michael Kirsch wrote:
>> What's the actual terminal emulator > > GNOME Terminal 2.26.3.1 I see a jump in gnome (2.26.2) terminal from column 77 to 79. None of the other terminals at hand do this (xterm, rxvt, pterm, konsole, linux). As far as ncurses is concerned, there aren't any boundaries at that point. Wrapping differences would be on column 80 versus column 1. It seems it's another item to add to the catalog of gnome-terminal bugs. -- Thomas E. Dickey http://invisible-island.net ftp://invisible-island.net _______________________________________________ Bug-ncurses mailing list Bug-ncurses@... http://lists.gnu.org/mailman/listinfo/bug-ncurses |
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Re: Re: Column Skipping
by MTK358
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On Thu, 2009-09-10 at 20:31 -0400, Thomas Dickey wrote:
> On Thu, 10 Sep 2009, Michael Kirsch wrote: > > >> What's the actual terminal emulator > > > > GNOME Terminal 2.26.3.1 > > I see a jump in gnome (2.26.2) terminal from column 77 to 79. > > None of the other terminals at hand do this (xterm, rxvt, pterm, konsole, > linux). At least that's good, but I don't have any other terminal to try it on. I can't even use the Ctrl+Alt+F# terminals because of the stupid nVidia driver. _______________________________________________ Bug-ncurses mailing list Bug-ncurses@... http://lists.gnu.org/mailman/listinfo/bug-ncurses |
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Re: Re: Column Skipping
by Thomas Dickey-2
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On Thu, 10 Sep 2009, Michael Kirsch wrote:
> On Thu, 2009-09-10 at 20:31 -0400, Thomas Dickey wrote: >> On Thu, 10 Sep 2009, Michael Kirsch wrote: >> >>>> What's the actual terminal emulator >>> >>> GNOME Terminal 2.26.3.1 >> >> I see a jump in gnome (2.26.2) terminal from column 77 to 79. >> >> None of the other terminals at hand do this (xterm, rxvt, pterm, konsole, >> linux). > > At least that's good, but I don't have any other terminal to try it on. > I can't even use the Ctrl+Alt+F# terminals because of the stupid nVidia > driver. xterm and rxvt are relatively easy to compile or install (relative to gnome-terminal). -- Thomas E. Dickey http://invisible-island.net ftp://invisible-island.net _______________________________________________ Bug-ncurses mailing list Bug-ncurses@... http://lists.gnu.org/mailman/listinfo/bug-ncurses |
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