Function new_field

Source/CursesDialog/form/fld_def.c:256–308

--------------------------------------------------------------------------- | Facility : libnform | Function : FIELD *new_field( int rows, int cols, | int frow, int fcol, | int nrow, int nbuf ) | | Description : Create a new field with this many 'rows' and 'cols', | starting at '

|
|   Return Values :  Pointer to the new field or NULL if failure.
+--------------------------------------------------------------------------*/
FIELD *new_field(int rows, int cols, int frow, int fcol, int nrow, int nbuf)
{
  FIELD *New_Field = (FIELD *)0;
  int err = E_BAD_ARGUMENT;

  if (rows>0  && 
      cols>0  && 
      frow>=0 && 
      fcol>=0 && 
      nrow>=0 && 
      nbuf>=0 &&
      ((err = E_SYSTEM_ERROR) != 0) && /* trick: this resets the default error */
      (New_Field=(FIELD *)malloc(sizeof(FIELD))) )
    {
      *New_Field       = default_field;
      New_Field->rows  = rows;
      New_Field->cols  = cols;
      New_Field->drows = rows + nrow;
      New_Field->dcols = cols;
      New_Field->frow  = frow;
      New_Field->fcol  = fcol;
      New_Field->nrow  = nrow;
      New_Field->nbuf  = nbuf;
      New_Field->link  = New_Field;

      if (_nc_Copy_Type(New_Field,&default_field))
	{
	  size_t len;

	  len = Total_Buffer_Size(New_Field);
	  if ((New_Field->buf = (char *)malloc(len)))
	    {
	      /* Prefill buffers with blanks and insert terminating zeroes
		 between buffers */
	      int i;

	      memset(New_Field->buf,' ',len);
	      for(i=0;i<=New_Field->nbuf;i++)
		{
		  New_Field->buf[(New_Field->drows*New_Field->cols+1)*(i+1)-1]
		    = '\0';
		}
	      return New_Field;
	    }
	}
    }

  if (New_Field) 
    free_field(New_Field);
  
  SET_ERROR( err );
  return (FIELD *)0;
}

/*---------------------------------------------------------------------------