oldXMenu/ChgPane.c

   1 #include "copyright.h"
   2
   3 /* $Header: /u/src/emacs/19.0/oldXMenu/RCS/ChgPane.c,v 1.1 1992/04/11 22:10:17 jimb Exp $ */
   4 /* Copyright    Massachusetts Institute of Technology    1985   */
   5
   6 /*
   7  * XMenu:       MIT Project Athena, X Window system menu package
   8  *
   9  *      XMenuChangePane - Change the label of a  menu pane.
  10  *
  11  *      Author:         Tony Della Fera, DEC
  12  *                      December 19, 1985
  13  *
  14  */
  15
  16 #include "XMenuInt.h"
  17
  18 int
  19 XMenuChangePane(menu, p_num, label)
  20     register XMenu *menu;       /* Menu object to be modified. */
  21     register int p_num;         /* Pane number to be modified. */
  22     char *label;                /* Selection label. */
  23 {
  24     register XMPane *p_ptr;     /* XMPane pointer. */
  25
  26     int label_length;           /* Label length in characters. */
  27     int label_width;            /* Label width in pixels. */
  28
  29     /*
  30      * Check for NULL pointers!
  31      */
  32     if (label == NULL) {
  33         _XMErrorCode = XME_ARG_BOUNDS;
  34         return(XM_FAILURE);
  35     }
  36
  37     /*
  38      * Find the right pane.
  39      */
  40     p_ptr = _XMGetPanePtr(menu, p_num);
  41     if (p_ptr == NULL) return(XM_FAILURE);
  42
  43     /*
  44      * Determine label size.
  45      */
  46     label_length = strlen(label);
  47     label_width = XTextWidth(menu->p_fnt_info, label, label_length);
  48
  49     /*
  50      * Change the pane data.
  51      */
  52     p_ptr->label = label;
  53     p_ptr->label_width = label_width;
  54     p_ptr->label_length = label_length;
  55
  56     /*
  57      * Schedule a recompute.
  58      */
  59     menu->recompute = 1;
  60
  61     /*
  62      * Return the pane number just changed.
  63      */
  64     _XMErrorCode = XME_NO_ERROR;
  65     return(p_num);
  66 }