ncurses/form/fld_max.c

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30  *   Author:  Juergen Pfeifer, 1995,1997                                    *
33 #include "form.priv.h"
35 MODULE_ID("$Id: fld_max.c,v 1.13 2013/08/24 22:59:28 tom Exp $")
37 /*---------------------------------------------------------------------------
38 |   Facility      :  libnform
39 |   Function      :  int set_max_field(FIELD *field, int maxgrow)
41 |   Description   :  Set the maximum growth for a dynamic field. If maxgrow=0
42 |                    the field may grow to any possible size.
44 |   Return Values :  E_OK           - success
45 |                    E_BAD_ARGUMENT - invalid argument
46 +--------------------------------------------------------------------------*/
47 NCURSES_EXPORT(int)
48 set_max_field(FIELD *field, int maxgrow)
50   T((T_CALLED("set_max_field(%p,%d)"), (void *)field, maxgrow));
52   if (!field || (maxgrow < 0))
53     RETURN(E_BAD_ARGUMENT);
54   else
56       bool single_line_field = Single_Line_Field(field);
58       if (maxgrow > 0)
60 	  if ((single_line_field && (maxgrow < field->dcols)) ||
61 	      (!single_line_field && (maxgrow < field->drows)))
62 	    RETURN(E_BAD_ARGUMENT);
64       field->maxgrow = maxgrow;
65       ClrStatus(field, _MAY_GROW);
66       if (!((unsigned)field->opts & O_STATIC))
68 	  if ((maxgrow == 0) ||
69 	      (single_line_field && (field->dcols < maxgrow)) ||
70 	      (!single_line_field && (field->drows < maxgrow)))
71 	    SetStatus(field, _MAY_GROW);
74   RETURN(E_OK);
77 /* fld_max.c ends here */