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Annotation of 43BSDTahoe/new/X/XMenu/XMenuChgSel.c, revision 1.1

1.1     ! root        1: #include <X/mit-copyright.h>
        !             2: 
        !             3: /* $Header: XMenuChgSel.c,v 10.9 86/02/12 16:18:42 tony Rel $ */
        !             4: /* Copyright    Massachusetts Institute of Technology    1985  */
        !             5: 
        !             6: /*
        !             7:  * XMenu:      MIT Project Athena, X Window system menu package
        !             8:  *
        !             9:  *     XMenuChangeSelection - Change a menu selection.
        !            10:  *
        !            11:  *     Author:         Tony Della Fera, DEC
        !            12:  *                     December 19, 1985
        !            13:  *
        !            14:  */
        !            15: 
        !            16: #include "XMenuInternal.h"
        !            17: 
        !            18: int
        !            19: XMenuChangeSelection(menu, p_num, s_num, data, data_sw, label, label_sw)
        !            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 to modified. */
        !            23:     char *data;                        /* Data value. */
        !            24:     int data_sw;               /* Change to new data value? */
        !            25:     char *label;               /* Selection label. */
        !            26:     int label_sw;              /* Change to new label? */
        !            27: {
        !            28:     register int i;            /* Loop counter. */
        !            29:     register XMPane *p_ptr;    /* XMPane pointer. */
        !            30:     register XMSelect *s_ptr;  /* XMSelect pointer. */
        !            31:     
        !            32:     int label_length;          /* Label lenght in characters. */
        !            33:     int label_width;           /* Label width in pixels. */
        !            34: 
        !            35:     /*
        !            36:      * Check for NULL pointers!
        !            37:      */
        !            38:     if (label == NULL) {
        !            39:        _XMErrorCode = XME_ARG_BOUNDS;
        !            40:        return(XM_FAILURE);
        !            41:     }
        !            42: 
        !            43:     /*
        !            44:      * Find the right pane.
        !            45:      */
        !            46:     p_ptr = _XMGetPanePtr(menu, p_num);
        !            47:     if (p_ptr == NULL) return(XM_FAILURE);
        !            48: 
        !            49:     /*
        !            50:      * Find the right selection.
        !            51:      */
        !            52:     s_ptr = _XMGetSelectionPtr(p_ptr, s_num);
        !            53:     if (s_ptr == NULL) return(XM_FAILURE);
        !            54: 
        !            55:     /*
        !            56:      * Reset the label?
        !            57:      */
        !            58:     if (label_sw) {
        !            59:        /*
        !            60:         * Determine label size.
        !            61:         */
        !            62:        label_length = strlen(label);
        !            63:        label_width = XQueryWidth(label, menu->s_fnt_info->id);
        !            64: 
        !            65:        /*
        !            66:         * Change the selection data.
        !            67:         */
        !            68:        s_ptr->label = label;
        !            69:        s_ptr->label_width = label_width;
        !            70:        s_ptr->label_length = label_length;
        !            71: 
        !            72:        /*
        !            73:         * Schedule a recompute.
        !            74:         */
        !            75:        menu->recompute = 1;
        !            76:     }
        !            77: 
        !            78:     /*
        !            79:      * Reset the data?
        !            80:      */
        !            81:     if (data_sw) s_ptr->data = data;
        !            82: 
        !            83:     /*
        !            84:      * Return successfully.
        !            85:      */
        !            86:     _XMErrorCode = XME_NO_ERROR;
        !            87:     return(s_num);
        !            88: }

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