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Annotation of researchv9/X11/src/X.V11R1/lib/oldXMenu/AddSel.c, revision 1.1.1.1

1.1       root        1: #include <X11/copyright.h>
                      2: 
                      3: /* $Header: AddSel.c,v 1.3 87/09/10 20:30:27 chris Exp $ */
                      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(display, menu, p_num, data, label, active)
                     20:     Display *display;
                     21:     register XMenu *menu;      /* Menu object to be modified. */
                     22:     register int p_num;                /* Pane number to be modified. */
                     23:     char *data;                        /* Data value. */
                     24:     char *label;               /* Selection label. */
                     25:     int active;                        /* Make selection active? */
                     26: {
                     27:     register XMPane *pane;     /* Pane containing the new selection. */
                     28:     register XMSelect *select; /* Newly created selection. */
                     29: 
                     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:      * Find the right pane.
                     43:      */
                     44:     pane = _XMGetPanePtr(menu, p_num);
                     45:     if (pane == NULL) return(XM_FAILURE);
                     46: 
                     47:     /*
                     48:      * Calloc the XMSelect structure.
                     49:      */
                     50:     select = (XMSelect *)calloc(1, sizeof(XMSelect));
                     51:     if (select == NULL) {
                     52:        _XMErrorCode = XME_CALLOC;
                     53:        return(XM_FAILURE);
                     54:     }
                     55:     /*
                     56:      * Determine label size.
                     57:      */
                     58:     label_length = strlen(label);
                     59:     label_width = XTextWidth(menu->s_fnt_info, label, label_length);
                     60:     
                     61:     /*
                     62:      * Fill the XMSelect structure.
                     63:      */
                     64:     select->type = SELECTION;
                     65:     select->active = active;
                     66:     select->serial = -1;
                     67:     select->label = label;
                     68:     select->label_width = label_width;
                     69:     select->label_length = label_length;
                     70:     select->data = data;
                     71:     select->parent_p = pane;
                     72:     
                     73:     /*
                     74:      * Insert the selection at the end of the selection list.
                     75:      */
                     76:     insque(select, pane->s_list->prev);
                     77: 
                     78:     /*
                     79:      * Update the selection count.
                     80:      */
                     81:     pane->s_count++;
                     82: 
                     83:     /*
                     84:      * Schedule a recompute.
                     85:      */
                     86:     menu->recompute = 1;
                     87: 
                     88:     /*
                     89:      * Return the selection number just added.
                     90:      */
                     91:     _XMErrorCode = XME_NO_ERROR;
                     92:     return((pane->s_count - 1));
                     93: }

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