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