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Annotation of 43BSD/contrib/X/XMenu/XMenuInsSel.c, revision 1.1.1.1

1.1       root        1: #include <X/mit-copyright.h>
                      2: 
                      3: /* $Header: XMenuInsSel.c,v 10.9 86/02/01 16:15:07 tony Rel $ */
                      4: /* Copyright    Massachusetts Institute of Technology    1985  */
                      5: 
                      6: /*
                      7:  * XMenu:      MIT Project Athena, X Window system menu package
                      8:  *
                      9:  *     XMenuInsertSelection - Inserts a selection into an XMenu object
                     10:  *
                     11:  *     Author:         Tony Della Fera, DEC
                     12:  *                     20-Nov-85
                     13:  *
                     14:  */
                     15: 
                     16: #include "XMenuInternal.h"
                     17: 
                     18: int
                     19: XMenuInsertSelection(menu, p_num, s_num, data, label, active)
                     20:     register XMenu *menu;      /* Menu object to be modified. */
                     21:     register int p_num;                /* Pane number to be modified. */
                     22:     register int s_num;                /* Selection number of new selection. */
                     23:     char *data;                        /* Data value. */
                     24:     char *label;               /* Selection label. */
                     25:     int active;                        /* Make selection active? */
                     26: {
                     27:     register XMPane *p_ptr;    /* XMPane pointer. */
                     28:     register XMSelect *s_ptr;  /* XMSelect pointer. */
                     29: 
                     30:     register int i;            /* Loop index. */
                     31: 
                     32:     XMSelect *select;          /* Newly created selection. */
                     33: 
                     34:     int label_length;          /* Label lenght in characters. */
                     35:     int label_width;           /* Label width in pixels. */
                     36:     
                     37:     /*
                     38:      * Check for NULL pointers!
                     39:      */
                     40:     if (label == NULL) {
                     41:        _XMErrorCode = XME_ARG_BOUNDS;
                     42:        return(XM_FAILURE);
                     43:     }
                     44: 
                     45:     /*
                     46:      * Find the right pane.
                     47:      */
                     48:     p_ptr = _XMGetPanePtr(menu, p_num);
                     49:     if (p_ptr == NULL) return(XM_FAILURE);
                     50: 
                     51:     /*
                     52:      * Find the selection number one less than the one specified since that
                     53:      * is the selection after which the insertion will occur.
                     54:      */
                     55:     s_ptr = _XMGetSelectionPtr(p_ptr, (s_num - 1));
                     56:     if (s_ptr == NULL) return(XM_FAILURE);
                     57: 
                     58:     /*
                     59:      * Calloc the XMSelect structure.
                     60:      */
                     61:     select = (XMSelect *)calloc(1, sizeof(XMSelect));
                     62:     if (select == NULL) {
                     63:        _XMErrorCode = XME_CALLOC;
                     64:        return(XM_FAILURE);
                     65:     }
                     66: 
                     67:     /*
                     68:      * Determine label size.
                     69:      */
                     70:     label_length = strlen(label);
                     71:     label_width = XQueryWidth(label, menu->s_fnt_info->id);
                     72: 
                     73:     /*
                     74:      * Fill the XMSelect structure.
                     75:      */
                     76:     select->type = SELECTION;
                     77:     select->active = active;
                     78:     select->serial = -1;
                     79:     select->label = label;
                     80:     select->label_width = label_width;
                     81:     select->label_length = label_length;
                     82:     select->data = data;
                     83:     select->parent_p = p_ptr;
                     84: 
                     85:     /*
                     86:      * Insert the selection after the selection with the selection
                     87:      * number one less than the desired number for the new selection.
                     88:      */
                     89:     insque(select, s_ptr);
                     90: 
                     91:     /*
                     92:      * Update the selection count.
                     93:      */
                     94:     p_ptr->s_count++;
                     95: 
                     96:     /*
                     97:      * Schedule a recompute.
                     98:      */
                     99:     menu->recompute = 1;
                    100: 
                    101:     /*
                    102:      * Return the selection number just inserted.
                    103:      */
                    104:     _XMErrorCode = XME_NO_ERROR;
                    105:     return(s_num);
                    106: }

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