/*
 * This file contains information about how to read a
 * file into memory, and into a GraphApp textbox.
 *
 * Note this uses a fixed size buffer of 10K.

   To read an enitre file, you need to do something like this:

  FILE *f;
  char *buffer;
  int size;

  buffer = (char *) malloc(10000); /* make a big buffer, do this once only */
  f = fopen("thefile.txt", "r");   /* "r" means read the file */
  if (f) {
    size = fread(buffer, 1, 10000, f);
    buffer[size] = '\0'; /* terminate the string properly */
  }
  fclose(f);

   You can then display the file in a GraphApp textbox like so:

  settext(msgbox, buffer);

   where msgbox is a previously created GraphApp textbox, field
   or textarea object.

   To save a file, use fprintf like so:

  char *text = gettext(msg);

  f = fopen("thefile.txt", "w");   /* "w" means write to the file */
  if (f) {
    fprintf(f, "%s", text);
  }
  fclose(f);

   where msg is another textbox, field or textarea.

 *
 *
 */