Incorrect aspect of TUI dialogs in OSX

Question

I am testing the dialog.h library with this simple C program on OSX 10.15.7 (Catalina):

#include <stdio.h>
#include <dialog.h>


int main() {
  int status;
  
  init_dialog (stdin, stdout);
  status = dialog_yesno (
    "Hello",
    "Hello World!",
    0, 
    0
  );
  end_dialog();

  return status;
}

This is my Makefile

PRG    = test_dialog
BREW   = /usr/local/Cellar
DIALOG = ${BREW}/dialog/1.3-20220728

CC     = gcc -Wall -Wextra -Werror -Wpedantic -std=c11 \
    -D_XOPEN_SOURCE_EXTENDED \
    -I${DIALOG}/include \
    -I/opt/local/include \
    -L${DIALOG}/lib \
    -L/opt/local/lib/ \
    -ldialog -lncursesw -lm

prg:
    ${CC} -o ${PRG} ${PRG}.c
    
clean:
    rm -f .DS_Store *.o ${PRG}%

The program runs but it renders the dialogs poorly, missing some borders:

I have read How to use dialog.h in a c program and, consecuently, tested with ncurses and ncursesw libraries, but the problem persists.

Any idea about this?

score 0 · Accepted Answer · answered Oct 26 '22 at 23:58

That's terminal-specific (color palette). dialog is coloring the upper/left borders in "bold-white" (e.g., color 15) and the box background in "white" (color 7), but Terminal.app's default palette makes them the same. (Other palettes, other terminals will differ).

Incorrect aspect of TUI dialogs in OSX

1 Answers1