ncurses changing colors problem
lazarus / 32-Linux

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raymond · 2022-02-07 14:04

Am using fpc 3.2.2 x86_64 & ncurses 6.2 with Linux Mint 20.1
  Cannot change colors e.g.
PROGRAM colchg2;
USES ncurses; VAR win : pWINDOW;
BEGIN
     initscr; start_color;
    IF has_colors THEN WRITELN ('has col') ELSE WRITELN ('NO col'); 
 { > has col }
    IF can_change_color THEN WRITELN ('chng') ELSE WRITELN ('No
chng'); { > chng }
   init_pair (8, COLOR_RED, COLOR_WHITE);
   win := newwin (80,25, 0,0);

   wattron (win, COLOR_PAIR ();
   mvwaddrstr (win, 8,0, '   Red on white ');     { > OK }

   init_color (8,  215,135,0);    { > orange3 }
   wattron (win, COLOR_PAIR();
   mvwaddstr (win, 12,0, '   Orange on white');  { > no difference }

   raw;  wgetch (wijn); endwin;
END.
Any ideas ? PLease

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MarkMLl · 2022-02-07 14:37

Not from any particular knowledge of that API with Pascal, but from a
more general unix/Linux POV I suggest checking your TERM shell
variable (or whatever is used to tell the library what's available)
and the commands applicable to it.

MarkMLl

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raymond · 2022-02-11 13:43

Thank you - my TERM is xterm-256color as recommended in ncurses FAQ.
Owing to my incompetence there were two errors - of course it should
be COLOR_PAIR ( and
wgetch (win).  Still hoping for Delphi to reply.