4.3BSD - /usr/src/new/X/XMenu/XMenuAddSel.c

   1: #include <X/mit-copyright.h>
   2: 
   3: /* $Header: XMenuAddSel.c,v 10.8 86/02/01 16:14:26 tony Rel $ */
   4: /* Copyright    Massachusetts Institute of Technology    1985	*/
   5: 
   6: /*
   7:  * XMenu:	MIT Project Athena, X Window system menu package
   8:  *
   9:  * 	XMenuAddSelection - Adds a selection to an XMenu object.
  10:  *
  11:  *	Author:		Tony Della Fera, DEC
  12:  *			August, 1985
  13:  *
  14:  */
  15: 
  16: #include "XMenuInternal.h"
  17: 
  18: int
  19: XMenuAddSelection(menu, p_num, data, label, active)
  20:     register XMenu *menu;   /* Menu object to be modified. */
  21:     register int p_num;     /* Pane number to be modified. */
  22:     char *data;         /* Data value. */
  23:     char *label;        /* Selection label. */
  24:     int active;         /* Make selection active? */
  25: {
  26:     register XMPane *pane;  /* Pane containing the new selection. */
  27:     register XMSelect *select;  /* Newly created selection. */
  28: 
  29:     register int i;     /* Loop index. */
  30: 
  31:     int label_length;       /* Label lenght in characters. */
  32:     int label_width;        /* Label width in pixels. */
  33: 
  34:     /*
  35:      * Check for NULL pointers!
  36:      */
  37:     if (label == NULL) {
  38:     _XMErrorCode = XME_ARG_BOUNDS;
  39:     return(XM_FAILURE);
  40:     }
  41: 
  42:     /*
  43:      * Find the right pane.
  44:      */
  45:     pane = _XMGetPanePtr(menu, p_num);
  46:     if (pane == NULL) return(XM_FAILURE);
  47: 
  48:     /*
  49:      * Calloc the XMSelect structure.
  50:      */
  51:     select = (XMSelect *)calloc(1, sizeof(XMSelect));
  52:     if (select == NULL) {
  53:     _XMErrorCode = XME_CALLOC;
  54:     return(XM_FAILURE);
  55:     }
  56: 
  57:     /*
  58:      * Determine label size.
  59:      */
  60:     label_length = strlen(label);
  61:     label_width = XQueryWidth(label, menu->s_fnt_info->id);
  62: 
  63:     /*
  64:      * Fill the XMSelect structure.
  65:      */
  66:     select->type = SELECTION;
  67:     select->active = active;
  68:     select->serial = -1;
  69:     select->label = label;
  70:     select->label_width = label_width;
  71:     select->label_length = label_length;
  72:     select->data = data;
  73:     select->parent_p = pane;
  74: 
  75:     /*
  76:      * Insert the selection at the end of the selection list.
  77:      */
  78:     insque(select, pane->s_list->prev);
  79: 
  80:     /*
  81:      * Update the selection count.
  82:      */
  83:     pane->s_count++;
  84: 
  85:     /*
  86:      * Schedule a recompute.
  87:      */
  88:     menu->recompute = 1;
  89: 
  90:     /*
  91:      * Return the selection number just added.
  92:      */
  93:     _XMErrorCode = XME_NO_ERROR;
  94:     return((pane->s_count - 1));
  95: }

Defined functions