uivfld.h

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*
*                            Open Watcom Project
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*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
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*  ========================================================================
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*    This file contains Original Code and/or Modifications of Original
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* Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
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****************************************************************************/


#ifndef _UIVFLD_H_
#define _UIVFLD_H_

typedef struct vfield {
        struct vfield _FARD *link;      /* next vfield on the vscreen      */
        ORD             row;
        ORD             col;            /* position of vfield on vscreen   */
        int             length;         /* length of field on vscreen      */
} VFIELD;

typedef struct vfieldedit {
        VFIELD _FARD    *fieldlist;     /* first vfield in linked list of vfields  */
        VFIELD _FARD    *curfield;      /* current vfield (might be NULL)          */
        VFIELD _FARD    *prevfield;     /* last vfield (might be NULL)             */
        ATTR            enter;          /* attribute used to echo current field    */
        ATTR            exit;           /* used when cursor leaves current field   */
        char _FARD      *buffer;        /* buffer of characters being editted      */
                                        /*                           SET  RESET    */
        unsigned        oktomodify:1;   /* user can edit buffer      app   app     */
        unsigned        hidden:1;       /* echo only cursor on XXX   app   app     */
        unsigned        delpending:1;   /* rubout key entered field  ui    ui      */
        unsigned        fieldpending:1; /* a field was just entered  ui    ui      */
        unsigned        dirty:1;        /* altered buffer contents   ui    app     */
        unsigned        update:1;       /* new buffer or contents    app   ui      */
        unsigned        cursor:1;       /* cursor changed            app   ui      */
        unsigned        cancel:1;       /* cancel field change       app   ui      */
        unsigned        reset:1;        /* changed field list or     app   ui      */
                                        /* first time through                      */
} VFIELDEDIT;
/*                                                                         */
/*                                                                         */
/* when the application makes any unexpected change to the field editting  */
/* information, it must indicate that it has done so by setting the        */
/* appropriate flag                                                        */
/*                                                                         */
/* when an EV_FIELD_CHANGE event occurs, the application can change:       */
/*                 the screen attributes                                   */
/*                 the oktomodify flag                                     */
/*                 the buffer and/or its contents                          */
/*                                                                         */
/* NOTE: the application cannot change curfield or prevfield directly      */
/*       it must do so by setting the VSCREEN cursor position and          */
/*       setting the cursor flag                                           */
/*                                                                         */

extern           EVENT          uivfieldedit( VSCREEN *, VFIELDEDIT * );

#endif