Problems with pads

[Morris, William]

Hello

Can anyone put me right in the use of "pads"?  

I added a pad to a program which needs to show a portion of some data.
The data in the pad never appeared.  So I have the simple code below
which tries to make a pad do what I expect.  The comments in the code
explain what happens.  I would like to be able to:

 1. get input from the main window or other windows
 2. use addstr/waddstr (and variants) to add to areas inside and outside
    the pad view area.

I'm running QNX6.2 (realtime OS with POSIX features) curses version-5.2.
I tried compiling up the 5.3 release.  The library (libncurses.a)
compiled, but other components failed.  After compiling/linking against
the 5.3 library, text strings were printed in a garbled fashion and the
pad text appeared in the rip-off line.

Thanks in advance
William Morris

-------------------------------------

#include <stdio.h>
#include <stdlib.h>
#include <curses.h>

WINDOW * pad, * line;

static void curses_close( void )
{
  clear(); refresh(); endwin();
} 
static int do_line( WINDOW * w, int cols )
{
  line = w;
  waddstr( w, "Rip off!" ); 
  //wrefresh( line );  This causes an end to all keyboard input
  return 0;
}
int
main( int argc, char ** argv )
{
  ripoffline( 1, do_line );
  initscr();
  cbreak();
  noecho();
  atexit( curses_close );
  // Refresh the ripped-off line.  This causes an end to all keyboard 
  // input if placed in do_line()
  wrefresh( line );
  
  pad = newpad( 100, 100 );
  //trace( TRACE_MAXIMUM );

  // Write some text into the pad and display it. pnoutrefresh does
  // nothing so use prefresh instead
  mvwaddstr( pad, 3, 3, "Text in pad added with mvwaddstr" );
  prefresh( pad, 0,0,0,0,10,60 );

  // Wait for input.  If this is just getch(), pad text does not appear.
  wgetch( line );
  // getch();

  // Add some text ouside the pad view area.  Pad text now disappears!
  move( 12, 12 );
  addstr( "Text in main area added with addstr" );
  getch();

  // Put the pad text back.  Now we have both text areas!
  // (pnotrefresh() does nothing here)
  prefresh( pad, 0,0,0,0,10,60 );

  // getch() doesn't obliterate pad this time.
  getch();
  return 0;
}

---
William Morris
address@hidden