uifc32.c 57.6 KB
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/* uifc32.c */
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/* Curses implementation of UIFC (user interface) library based on uifc.c */

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/* $Id$ */

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/****************************************************************************
 * @format.tab-size 4		(Plain Text/Source Code File Header)			*
 * @format.use-tabs true	(see http://www.synchro.net/ptsc_hdr.html)		*
 *																			*
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 * Copyright 2004 Rob Swindell - http://www.synchro.net/copyright.html		*
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 *																			*
 * This library is free software; you can redistribute it and/or			*
 * modify it under the terms of the GNU Lesser General Public License		*
 * as published by the Free Software Foundation; either version 2			*
 * of the License, or (at your option) any later version.					*
 * See the GNU Lesser General Public License for more details: lgpl.txt or	*
 * http://www.fsf.org/copyleft/lesser.html									*
 *																			*
 * Anonymous FTP access to the most recent released source is available at	*
 * ftp://vert.synchro.net, ftp://cvs.synchro.net and ftp://ftp.synchro.net	*
 *																			*
 * Anonymous CVS access to the development source and modification history	*
 * is available at cvs.synchro.net:/cvsroot/sbbs, example:					*
 * cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs login			*
 *     (just hit return, no password is necessary)							*
 * cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs checkout src		*
 *																			*
 * For Synchronet coding style and modification guidelines, see				*
 * http://www.synchro.net/source.html										*
 *																			*
 * You are encouraged to submit any modifications (preferably in Unix diff	*
 * format) via e-mail to mods@synchro.net									*
 *																			*
 * Note: If this box doesn't appear square, then you need to fix your tabs.	*
 ****************************************************************************/

#ifdef __unix__
	#include <stdio.h>
	#include <unistd.h>
	#ifdef __QNX__
		#include <strings.h>
	#endif
    #define mswait(x) delay(x)
#elif defined(_WIN32)
	#include <share.h>
	#include <windows.h>
	#define mswait(x) Sleep(x)
#endif

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#include "ciolib.h"
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#include "keys.h"
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#include "uifc.h"
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#define MAX_GETSTR	5120
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							/* Bottom line elements */
#define BL_INS      (1<<0)  /* INS key */
#define BL_DEL      (1<<1)  /* DEL key */
#define BL_GET      (1<<2)  /* Get key */
#define BL_PUT      (1<<3)  /* Put key */

#define BLINK	128

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static char  hclr,lclr,bclr,cclr,lbclr;
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static int   cursor;
static char* helpfile=0;
static uint  helpline=0;
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static size_t blk_scrn_len;
static char* blk_scrn;
static uchar* tmp_buffer;
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static uchar* tmp_buffer2;
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static win_t sav[MAX_BUFS];
static uifcapi_t* api;

/* Prototypes */
static int   uprintf(int x, int y, unsigned char attr, char *fmt,...);
static void  bottomline(int line);
static char  *utimestr(time_t *intime);
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static void  help(void);
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static int   ugetstr(int left, int top, int width, char *outstr, int max, long mode, int *lastkey);
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static void  timedisplay(void);

/* API routines */
static void uifcbail(void);
static int  uscrn(char *str);
static int  ulist(int mode, int left, int top, int width, int *dflt, int *bar
	,char *title, char **option);
static int  uinput(int imode, int left, int top, char *prompt, char *str
	,int len ,int kmode);
static void umsg(char *str);
static void upop(char *str);
static void sethelp(int line, char* file);
static void showbuf(int mode, int left, int top, int width, int height, char *title
	, char *hbuf, int *curp, int *barp);

/* Dynamic menu support */
static int *last_menu_cur=NULL;
static int *last_menu_bar=NULL;
static int save_menu_cur=-1;
static int save_menu_bar=-1;

static void reset_dynamic(void) {
	last_menu_cur=NULL;
	last_menu_bar=NULL;
	save_menu_cur=-1;
	save_menu_bar=-1;
}

/****************************************************************************/
/* Initialization function, see uifc.h for details.							*/
/* Returns 0 on success.													*/
/****************************************************************************/

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int kbwait(void) {
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	int timeout=0;
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	while(timeout++<50) {
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		if(kbhit())
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			return(TRUE);
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		mswait(1);
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	}
	return(FALSE);
}

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int inkey()
{
	int c;

	c=getch();
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	if(!c || c==0xff)
		c|=(getch()<<8);
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	return(c);
}
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int uifcini32(uifcapi_t* uifcapi)
{
	int 	i;
	struct	text_info txtinfo;
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#ifdef _WIN32
	DWORD	conmode;
#endif
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    if(uifcapi==NULL || uifcapi->size!=sizeof(uifcapi_t))
        return(-1);

    api=uifcapi;

    /* install function handlers */            
    api->bail=uifcbail;
    api->scrn=uscrn;
    api->msg=umsg;
    api->pop=upop;
    api->list=ulist;
    api->input=uinput;
    api->sethelp=sethelp;
    api->showhelp=help;
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	api->showbuf=showbuf;
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	api->timedisplay=timedisplay;
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	api->getstrxy=ugetstr;
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	/* A esc_delay of less than 10 is stupid... silently override */
	if(api->esc_delay < 10)
		api->esc_delay=25;

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#ifdef NCURSES_VERSION_MAJOR
	if(cio_api.mode==CIOLIB_MODE_CURSES) {
		ESCDELAY=api->esc_delay;
#endif

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#ifdef PDCURSES
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/*	
 * "ALL  DESCRIPTIONS  ARE  GUESSES.  I DON'T KNOW ANYONE WHO KNOWS EXACTLY WHAT THESE FUNCTIONS DO!"
 *
 * 	if(mouse_set(BUTTON1_CLICKED|BUTTON3_CLICKED)==0)
 *		api->mode|=UIFC_MOUSE;
 *	else
 *		mouse_set(0);
 */
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#endif
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    if(api->scrn_len!=0) {
        switch(api->scrn_len) {
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#ifdef C80X14
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            case 14:
                textmode(C80X14);
                break;
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#endif
#ifdef C80X21
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            case 21:
                textmode(C80X21);
                break;
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#endif
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            case 25:
                textmode(C80);
                break;
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#ifdef C80X28
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            case 28:
                textmode(C80X28);
                break;
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#endif
#ifdef C80X43
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            case 43:
                textmode(C80X43);
                break;
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#endif
#ifdef C80X50
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            case 50:
                textmode(C80X50);
                break;
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#endif
#ifdef C80X60
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            case 60:
                textmode(C80X60);
                break;
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#endif
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            default:
                textmode(C4350);
                break;
        }
    }

    clrscr();

    gettextinfo(&txtinfo);
#ifdef _WIN32
    /* unsupported mode? */
    if(txtinfo.screenheight<MIN_LINES
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/*        || txtinfo.screenheight>MAX_LINES */
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        || txtinfo.screenwidth<80) {
        textmode(C80);  /* set mode to 80x25*/
        gettextinfo(&txtinfo);
    }
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#endif

    api->scrn_len=txtinfo.screenheight;
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    if(api->scrn_len<MIN_LINES) {
        cprintf("\7UIFC: Screen length (%u) must be %d lines or greater\r\n"
            ,api->scrn_len,MIN_LINES);
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        return(-2);
    }
    api->scrn_len--; /* account for status line */

    if(txtinfo.screenwidth<80) {
        cprintf("\7UIFC: Screen width (%u) must be at least 80 characters\r\n"
            ,txtinfo.screenwidth);
        return(-3);
    }
	api->scrn_width=txtinfo.screenwidth;

    if(!(api->mode&UIFC_COLOR)
        && (api->mode&UIFC_MONO
            || txtinfo.currmode==MONO || txtinfo.currmode==BW80)) {
        bclr=BLACK;
        hclr=WHITE;
        lclr=LIGHTGRAY;
        cclr=LIGHTGRAY;
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#ifdef __unix__
		if(txtinfo.currmode==MONO)
			lbclr=WHITE|(BLACK<<4);		/* no color on curses means no inverse either */
		else
#endif
			lbclr=BLACK|(LIGHTGRAY<<4);	/* lightbar color */
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    } else {
        bclr=BLUE;
        hclr=YELLOW;
        lclr=WHITE;
        cclr=CYAN;
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		lbclr=BLUE|(LIGHTGRAY<<4);	/* lightbar color */
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    }
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	blk_scrn_len=api->scrn_width*api->scrn_len*2;
	if((blk_scrn=(char *)MALLOC(blk_scrn_len))==NULL)  {
				cprintf("UIFC line %d: error allocating %u bytes."
					,__LINE__,blk_scrn_len);
				return(-1);
	}
	if((tmp_buffer=(uchar *)MALLOC(blk_scrn_len))==NULL)  {
				cprintf("UIFC line %d: error allocating %u bytes."
					,__LINE__,blk_scrn_len);
				return(-1);
	}
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	if((tmp_buffer2=(uchar *)MALLOC(blk_scrn_len))==NULL)  {
				cprintf("UIFC line %d: error allocating %u bytes."
					,__LINE__,blk_scrn_len);
				return(-1);
	}
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    for(i=0;i<blk_scrn_len;i+=2) {
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        blk_scrn[i]='';
        blk_scrn[i+1]=cclr|(bclr<<4);
    }

    cursor=_NOCURSOR;
    _setcursortype(cursor);

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	if(cio_api.mouse)
		api->mode|=UIFC_MOUSE;
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    return(0);
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}

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static int uifc_getmouse(struct cio_mouse_event *mevent)
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{
	mevent->x=0;
	mevent->y=0;
	mevent->button=0;
	if(api->mode&UIFC_MOUSE) {
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		getmouse(mevent);
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		if(mevent->button==2)
			return(ESC);
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		if(mevent->y==api->buttony) {
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			if(mevent->x>=api->exitstart
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					&& mevent->x<=api->exitend
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					&& mevent->button==1) {
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				return(ESC);
			}
			if(mevent->x>=api->helpstart
					&& mevent->x<=api->helpend
					&& mevent->button==1) {
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				return(CIO_KEY_F(1));
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			}
		}
		return(0);
	}
	return(-1);
}

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void uifcbail(void)
{
	_setcursortype(_NORMALCURSOR);
	textattr(LIGHTGRAY);
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	hidemouse();
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	clrscr();
#ifdef __unix__
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	if(cio_api.mode==CIOLIB_MODE_CURSES) {
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		nl();
		nocbreak();
		noraw();
		refresh();
		endwin();
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#ifdef XCURSES
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		XCursesExit();
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#endif
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	}
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#endif
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	FREE(blk_scrn);
	FREE(tmp_buffer);
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	FREE(tmp_buffer2);
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}

/****************************************************************************/
/* Clear screen, fill with background attribute, display application title.	*/
/* Returns 0 on success.													*/
/****************************************************************************/
int uscrn(char *str)
{
    textattr(bclr|(cclr<<4));
    gotoxy(1,1);
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    clreol();
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    gotoxy(3,1);
	cputs(str);
    if(!puttext(1,2,api->scrn_width,api->scrn_len,blk_scrn))
        return(-1);
    gotoxy(1,api->scrn_len+1);
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    clreol();
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	reset_dynamic();
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	settitle(str);
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    return(0);
}

/****************************************************************************/
/****************************************************************************/
static void scroll_text(int x1, int y1, int x2, int y2, int down)
{
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	gettext(x1,y1,x2,y2,tmp_buffer2);
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	if(down)
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		puttext(x1,y1+1,x2,y2,tmp_buffer2);
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	else
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		puttext(x1,y1,x2,y2-1,tmp_buffer2+(((x2-x1)+1)*2));
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}

/****************************************************************************/
/* Updates time in upper left corner of screen with current time in ASCII/  */
/* Unix format																*/
/****************************************************************************/
static void timedisplay()
{
	static time_t savetime;
	time_t now;

	now=time(NULL);
	if(difftime(now,savetime)>=60) {
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		uprintf(api->scrn_width-25,1,bclr|(cclr<<4),utimestr(&now));
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		savetime=now; 
	}
}

/****************************************************************************/
/* Truncates white-space chars off end of 'str'								*/
/****************************************************************************/
static void truncsp(char *str)
{
	uint c;

	c=strlen(str);
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	while(c && (uchar)str[c-1]<=' ') c--;
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	if(str[c]!=0)	/* don't write to string constants */
		str[c]=0;
}

/****************************************************************************/
/* General menu function, see uifc.h for details.							*/
/****************************************************************************/
int ulist(int mode, int left, int top, int width, int *cur, int *bar
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	, char *initial_title, char **option)
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{
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	uchar line[256],shade[256],*ptr
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		,search[MAX_OPLN],bline=0,*win;
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	int height,y;
	int i,j,opts=0,s=0; /* s=search index into options */
	int	is_redraw=0;
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	uint s_top=SCRN_TOP;
	uint s_left=SCRN_LEFT;
	uint s_right=SCRN_RIGHT;
	uint s_bottom=api->scrn_len-3;
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	uint title_len;
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	struct cio_mouse_event mevnt;
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	char	*title;
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	int	a,b,c,longopt;
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	if((title=(char *)MALLOC(strlen(initial_title)+1))==NULL) {
		cprintf("UIFC line %d: error allocating %u bytes."
			,__LINE__,strlen(title)+1);
		return(-1);
	}
	strcpy(title,initial_title);
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	hidemouse();

	title_len=strlen(title);
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	if(mode&WIN_FAT) {
		s_top=1;
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		s_left=2;
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		s_right=api->scrn_width-3;  /* Leave space for the shadow */
		s_bottom=api->scrn_len-1;   /* Leave one for the shadow */
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	}
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	if(mode&WIN_SAV && api->savnum>=MAX_BUFS-1)
		putch(7);
	if(mode&WIN_INS) bline|=BL_INS;
	if(mode&WIN_DEL) bline|=BL_DEL;
	if(mode&WIN_GET) bline|=BL_GET;
	if(mode&WIN_PUT) bline|=BL_PUT;
	bottomline(bline);
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	while(opts<MAX_OPTS)
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		if(option[opts]==NULL || option[opts][0]==0)
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			break;
		else opts++;
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	if(mode&WIN_XTR && opts<MAX_OPTS)
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		opts++;
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	height=opts+4;
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	if(top+height>s_bottom)
		height=(s_bottom)-top;
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	if(!width || width<title_len+6) {
		width=title_len+6;
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		for(i=0;i<opts;i++) {
			truncsp(option[i]);
			if((j=strlen(option[i])+5)>width)
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				width=j;
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		}
	}
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	if(width>(s_right+1)-s_left) {
		width=(s_right+1)-s_left;
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		if(title_len>(width-4)) {
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			*(title+width-7)='.';
			*(title+width-6)='.';
			*(title+width-5)='.';
			*(title+width-4)=0;
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			title_len=strlen(title);
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		}
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	}
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	if(mode&WIN_L2R)
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		left=(s_right-s_left-width+1)/2;
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	else if(mode&WIN_RHT)
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		left=s_right-(width+4+left);
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	if(mode&WIN_T2B)
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		top=(api->scrn_len-height+1)/2-2;
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	else if(mode&WIN_BOT)
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		top=s_bottom-height-top;
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	if(left<0)
		left=0;
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	if(top<0)
		top=0;
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	/* Dynamic Menus */
	if(mode&WIN_DYN
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			&& cur != NULL
			&& bar != NULL
			&& last_menu_cur==cur
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			&& last_menu_bar==bar
			&& save_menu_cur==*cur
			&& save_menu_bar==*bar)
		is_redraw=1;
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	if(mode&WIN_DYN && mode&WIN_REDRAW)
		is_redraw=1;
	if(mode&WIN_DYN && mode&WIN_NODRAW)
		is_redraw=0;
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	if(!is_redraw) {
		if(mode&WIN_SAV && api->savdepth==api->savnum) {
			if((sav[api->savnum].buf=(char *)MALLOC((width+3)*(height+2)*2))==NULL) {
				cprintf("UIFC line %d: error allocating %u bytes."
					,__LINE__,(width+3)*(height+2)*2);
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				free(title);
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				return(-1);
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			}
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			gettext(s_left+left,s_top+top,s_left+left+width+1
				,s_top+top+height,sav[api->savnum].buf);
			sav[api->savnum].left=s_left+left;
			sav[api->savnum].top=s_top+top;
			sav[api->savnum].right=s_left+left+width+1;
			sav[api->savnum].bot=s_top+top+height;
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			api->savdepth++;
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		}
		else if(mode&WIN_SAV
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			&& (sav[api->savnum].left!=s_left+left
			|| sav[api->savnum].top!=s_top+top
			|| sav[api->savnum].right!=s_left+left+width+1
			|| sav[api->savnum].bot!=s_top+top+height)) { /* dimensions have changed */
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			puttext(sav[api->savnum].left,sav[api->savnum].top,sav[api->savnum].right,sav[api->savnum].bot
				,sav[api->savnum].buf);	/* put original window back */
			FREE(sav[api->savnum].buf);
			if((sav[api->savnum].buf=(char *)MALLOC((width+3)*(height+2)*2))==NULL) {
				cprintf("UIFC line %d: error allocating %u bytes."
					,__LINE__,(width+3)*(height+2)*2);
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				free(title);
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				return(-1);
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			}
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			gettext(s_left+left,s_top+top,s_left+left+width+1
				,s_top+top+height,sav[api->savnum].buf);	  /* save again */
			sav[api->savnum].left=s_left+left;
			sav[api->savnum].top=s_top+top;
			sav[api->savnum].right=s_left+left+width+1;
			sav[api->savnum].bot=s_top+top+height;
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		}
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	}

	if(!is_redraw) {
		if(mode&WIN_ORG) { /* Clear around menu */
			if(top)
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				puttext(1,2,api->scrn_width,s_top+top-1,blk_scrn);
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			if(s_top+height+top<=api->scrn_len)
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				puttext(1,s_top+height+top,api->scrn_width,api->scrn_len,blk_scrn);
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			if(left)
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				puttext(1,s_top+top,s_left+left-1,s_top+height+top
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					,blk_scrn);
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			if(s_left+left+width<=s_right)
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				puttext(s_left+left+width,s_top+top,/* s_right+2 */api->scrn_width
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					,s_top+height+top,blk_scrn);
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		}
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		ptr=tmp_buffer;
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		*(ptr++)='';
		*(ptr++)=hclr|(bclr<<4);

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		if(api->mode&UIFC_MOUSE) {
			*(ptr++)='[';
			*(ptr++)=hclr|(bclr<<4);
			/* *(ptr++)=''; */
			*(ptr++)='X';
			*(ptr++)=lclr|(bclr<<4);
			*(ptr++)=']';
			*(ptr++)=hclr|(bclr<<4);
			*(ptr++)='[';
			*(ptr++)=hclr|(bclr<<4);
			*(ptr++)='?';
			*(ptr++)=lclr|(bclr<<4);
			*(ptr++)=']';
			*(ptr++)=hclr|(bclr<<4);
			i=6;
			api->buttony=s_top+top-1;
			api->exitstart=s_left+left;
			api->exitend=s_left+left+2;
			api->helpstart=s_left+left+3;
			api->helpend=s_left+left+5;
		}
		else
			i=0;

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		for(;i<width-2;i++) {
			*(ptr++)='';
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			*(ptr++)=hclr|(bclr<<4);
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		}
		*(ptr++)='';
		*(ptr++)=hclr|(bclr<<4);
		*(ptr++)='';
		*(ptr++)=hclr|(bclr<<4);
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		a=title_len;
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		b=(width-a-1)/2;
		for(i=0;i<b;i++) {
			*(ptr++)=' ';
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			*(ptr++)=hclr|(bclr<<4);
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		}
		for(i=0;i<a;i++) {
			*(ptr++)=title[i];
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			*(ptr++)=hclr|(bclr<<4);
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		}
		for(i=0;i<width-(a+b)-2;i++) {
			*(ptr++)=' ';
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			*(ptr++)=hclr|(bclr<<4);
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		}
		*(ptr++)='';
		*(ptr++)=hclr|(bclr<<4);
		*(ptr++)='';
		*(ptr++)=hclr|(bclr<<4);
		for(i=0;i<width-2;i++) {
			*(ptr++)='';
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			*(ptr++)=hclr|(bclr<<4);
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		}
		*(ptr++)='';
		*(ptr++)=hclr|(bclr<<4);

		if((*cur)>=opts)
			(*cur)=opts-1;			/* returned after scrolled */

		if(!bar) {
			if((*cur)>height-5)
				(*cur)=height-5;
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			i=0;
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		}
		else {
			if((*bar)>=opts)
				(*bar)=opts-1;
			if((*bar)>height-5)
				(*bar)=height-5;
			if((*cur)==opts-1)
				(*bar)=height-5;
			if((*bar)<0)
				(*bar)=0;
			if((*cur)<(*bar))
				(*cur)=(*bar);
			i=(*cur)-(*bar);
			if(i+(height-5)>=opts) {
				i=opts-(height-4);
				(*cur)=i+(*bar);
				}
			}
			if((*cur)<0)
				(*cur)=0;

			j=0;
			if(i<0) i=0;
			longopt=0;
			while(j<height-4 && i<opts) {
				*(ptr++)='';
				*(ptr++)=hclr|(bclr<<4);
				*(ptr++)=' ';
				*(ptr++)=hclr|(bclr<<4);
				*(ptr++)='';
				*(ptr++)=lclr|(bclr<<4);
				if(i==(*cur))
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					a=lbclr;
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				else
					a=lclr|(bclr<<4);
				b=strlen(option[i]);
				if(b>longopt)
					longopt=b;
				if(b+4>width)
					b=width-4;
				for(c=0;c<b;c++) {
					*(ptr++)=option[i][c];
					*(ptr++)=a; 
				}
				while(c<width-4) {
					*(ptr++)=' ';
					*(ptr++)=a;
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					c++;
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				}
				*(ptr++)='';
				*(ptr++)=hclr|(bclr<<4);
				i++;
				j++; 
			}
			*(ptr++)='';
			*(ptr++)=hclr|(bclr<<4);
			for(i=0;i<width-2;i++) {
				*(ptr++)='';
				*(ptr++)=hclr|(bclr<<4); 
			}
			*(ptr++)='';
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			*(ptr)=hclr|(bclr<<4);	/* Not incremented to shut ot BCC */
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			puttext(s_left+left,s_top+top,s_left+left+width-1
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				,s_top+top+height-1,tmp_buffer);
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			if(bar)
				y=top+3+(*bar);
			else
				y=top+3+(*cur);
			if(opts+4>height && ((!bar && (*cur)!=opts-1)
				|| (bar && ((*cur)-(*bar))+(height-4)<opts))) {
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				gotoxy(s_left+left+1,s_top+top+height-2);
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				textattr(lclr|(bclr<<4));
				putch(31);	   /* put down arrow */
				textattr(hclr|(bclr<<4)); 
			}

			if(bar && (*bar)!=(*cur)) {
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				gotoxy(s_left+left+1,s_top+top+3);
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				textattr(lclr|(bclr<<4));
				putch(30);	   /* put the up arrow */
				textattr(hclr|(bclr<<4)); 
			}

			if(bclr==BLUE) {
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				gettext(s_left+left+width,s_top+top+1,s_left+left+width+1
					,s_top+top+height-1,shade);
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				for(i=1;i<height*4;i+=2)
					shade[i]=DARKGRAY;
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				puttext(s_left+left+width,s_top+top+1,s_left+left+width+1
					,s_top+top+height-1,shade);
				gettext(s_left+left+2,s_top+top+height,s_left+left+width+1
					,s_top+top+height,shade);
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				for(i=1;i<width*2;i+=2)
					shade[i]=DARKGRAY;
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				puttext(s_left+left+2,s_top+top+height,s_left+left+width+1
					,s_top+top+height,shade);
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			}
	}
	else {	/* Is a redraw */
		i=(*cur)-(*bar);
		j=2;

		longopt=0;
		while(j<height-2 && i<opts) {
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			ptr=tmp_buffer;
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			if(i==(*cur))
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				a=lbclr;
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			else
				a=lclr|(bclr<<4);
			b=strlen(option[i]);
			if(b>longopt)
				longopt=b;
			if(b+4>width)
				b=width-4;
			for(c=0;c<b;c++) {
				*(ptr++)=option[i][c];
				*(ptr++)=a; 
			}
			while(c<width-4) {
				*(ptr++)=' ';
				*(ptr++)=a;
				c++; 
			}
			i++;
			j++; 
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			puttext(s_left+left+3,s_top+top+j,s_left+left+width-2
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				,s_top+top+j,tmp_buffer); 
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		}
		if(bar)
			y=top+3+(*bar);
		else
			y=top+3+(*cur);
	}
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	free(title);
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	last_menu_cur=cur;
	last_menu_bar=bar;
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	if(mode&WIN_IMM)
		return(-2);
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	showmouse();

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	while(1) {
	#if 0					/* debug */
		gotoxy(30,1);
		cprintf("y=%2d h=%2d c=%2d b=%2d s=%2d o=%2d"
			,y,height,*cur,bar ? *bar :0xff,api->savdepth,opts);
	#endif
		timedisplay();
		i=0;
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		if(kbwait()) {
			i=inkey();
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			if(i==BS)
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				i=ESC;
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			if(i==CIO_KEY_MOUSE) {
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				if((i=uifc_getmouse(&mevnt))==0) {
					/* Clicked in menu */
					if(mevnt.x>=s_left+left+2
							&& mevnt.x<=s_left+left+width
							&& mevnt.y>=s_top+top+2
							&& mevnt.y<=(s_top+top+height)-3
							&& mevnt.button==1) {

						(*cur)=(mevnt.y)-(s_top+top+2);
						if(bar)
							(*bar)=(*cur);
						y=top+3+((mevnt.y)-(s_top+top+2));

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						if(!opts)
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							continue;

						if(mode&WIN_ACT) {
							hidemouse();
							if((win=(char *)MALLOC((width+3)*(height+2)*2))==NULL) {
								cprintf("UIFC line %d: error allocating %u bytes."
									,__LINE__,(width+3)*(height+2)*2);
								return(-1);
							}
							gettext(s_left+left,s_top+top,s_left
								+left+width-1,s_top+top+height-1,win);
							for(i=1;i<(width*height*2);i+=2)
								win[i]=lclr|(cclr<<4);
							j=(((y-top)*width)*2)+7+((width-4)*2);
							for(i=(((y-top)*width)*2)+7;i<j;i+=2)
								win[i]=hclr|(cclr<<4);

							puttext(s_left+left,s_top+top,s_left
								+left+width-1,s_top+top+height-1,win);
							free(win);
							showmouse();
						}
						else if(mode&WIN_SAV) {
							hidemouse();
							puttext(sav[api->savnum].left,sav[api->savnum].top
								,sav[api->savnum].right,sav[api->savnum].bot
								,sav[api->savnum].buf);
							showmouse();
							free(sav[api->savnum].buf);
							api->savdepth--;
						}
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						if(mode&WIN_XTR && (*cur)==opts-1)
							return(MSK_INS|*cur);
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						return(*cur);
					}
					/* Clicked Scroll Up */
					if(mevnt.x==s_left+left
							&& mevnt.y==s_top+top+2
							&& mevnt.button==1) {
						if(!opts)
							continue;
						*cur -= (height-5);
						if(*cur<0)
							*cur = 0;
						if(bar)
							*bar=0;
						y=s_top+top;
						gotoxy(s_left+left+1,s_top+top+3);
						textattr(lclr|(bclr<<4));
						if(*cur && opts>height-3)  /* Scroll mode */
							putch(30);	   /* put the up arrow */
						else
							putch(' ');    /* delete the up arrow */
						gotoxy(s_left+left+1,s_top+top+height-2);
						if(opts > height-3 && *cur + height - 4 < opts)
							putch(31);	   /* put the down arrow */
						else
							putch(' ');    /* delete the down arrow */
						for(i=*cur,j=0;i<=*cur-5+height;i++,j++)
							uprintf(s_left+left+3,s_top+top+3+j
								,i==*cur ? lbclr
									: lclr|(bclr<<4)
								,"%-*.*s",width-4,width-4,option[i]);
						continue;
					}
					/* Clicked Scroll Down */
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					if(mevnt.x==s_left+left
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							&& mevnt.y==(s_top+top+height)-3
							&& mevnt.button==1) {
						if(!opts)
							continue;
						*cur += (height-5);
						if(*cur>opts-1)
							*cur = opts-1;
						if(bar)
							*bar = height-5;
						y=height-5+s_top+top;
						gotoxy(s_left+left+1,s_top+top+3);
						textattr(lclr|(bclr<<4));
						if(*cur>height-5)  /* Scroll mode */
							putch(30);	   /* put the up arrow */
						else
							putch(' ');    /* delete the up arrow */
						gotoxy(s_left+left+1,s_top+top+height-2);
						if(*cur < opts-1)
							putch(31);	   /* put the down arrow */
						else
							putch(' ');    /* delete the down arrow */
						for(i=*cur+5-height,j=0;i<=*cur;i++,j++)
							uprintf(s_left+left+3,s_top+top+3+j
								,i==*cur ? lbclr
									: lclr|(bclr<<4)
								,"%-*.*s",width-4,width-4,option[i]);
						continue;
					}
				}
			}
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			if(i>255) {
				s=0;
				switch(i) {
					/* ToDo extended keys */
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					case CIO_KEY_HOME:	/* home */
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						if(!opts)
							break;
						if(opts+4>height) {
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							gotoxy(s_left+left+1,s_top+top+3);
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							textattr(lclr|(bclr<<4));
							putch(' ');    /* Delete the up arrow */
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							gotoxy(s_left+left+1,s_top+top+height-2);
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							putch(31);	   /* put the down arrow */
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							uprintf(s_left+left+3,s_top+top+3
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								,lbclr
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								,"%-*.*s",width-4,width-4,option[0]);
							for(i=1;i<height-4;i++)    /* re-display options */
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								uprintf(s_left+left+3,s_top+top+3+i
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									,lclr|(bclr<<4)
									,"%-*.*s",width-4,width-4,option[i]);
							(*cur)=0;
							if(bar)
								(*bar)=0;
							y=top+3;
							break; 
						}
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						gettext(s_left+3+left,s_top+y
							,s_left+left+width-2,s_top+y,line);
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						for(i=1;i<width*2;i+=2)
							line[i]=lclr|(bclr<<4);
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						puttext(s_left+3+left,s_top+y
							,s_left+left+width-2,s_top+y,line);
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						(*cur)=0;
						if(bar)
							(*bar)=0;
						y=top+3;
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						gettext(s_left+3+left,s_top+y
							,s_left+left+width-2,s_top+y,line);
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						for(i=1;i<width*2;i+=2)
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							line[i]=lbclr;
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						puttext(s_left+3+left,s_top+y
							,s_left+left+width-2,s_top+y,line);
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						break;
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					case CIO_KEY_UP:	/* up arrow */
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						if(!opts)
							break;
						if(!(*cur) && opts+4>height) {
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							gotoxy(s_left+left+1,s_top+top+3); /* like end */
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							textattr(lclr|(bclr<<4));
							putch(30);	   /* put the up arrow */
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							gotoxy(s_left+left+1,s_top+top+height-2);
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							putch(' ');    /* delete the down arrow */
							for(i=(opts+4)-height,j=0;i<opts;i++,j++)
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								uprintf(s_left+left+3,s_top+top+3+j
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									,i==opts-1 ? lbclr
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										: lclr|(bclr<<4)
									,"%-*.*s",width-4,width-4,option[i]);
							(*cur)=opts-1;
							if(bar)
								(*bar)=height-5;
							y=top+height-2;
							break; 
						}
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						gettext(s_left+3+left,s_top+y
							,s_left+left+width-2,s_top+y,line);
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						for(i=1;i<width*2;i+=2)
							line[i]=lclr|(bclr<<4);
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						puttext(s_left+3+left,s_top+y
							,s_left+left+width-2,s_top+y,line);
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						if(!(*cur)) {
							y=top+height-2;
							(*cur)=opts-1;
							if(bar)
								(*bar)=height-5; 
						}
						else {
							(*cur)--;
							y--;
							if(bar && *bar)
								(*bar)--; 
						}
						if(y<top+3) {	/* scroll */
							if(!(*cur)) {
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								gotoxy(s_left+left+1,s_top+top+3);
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								textattr(lclr|(bclr<<4));
								putch(' '); /* delete the up arrow */
							}  
							if((*cur)+height-4==opts-1) {
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								gotoxy(s_left+left+1,s_top+top+height-2);
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								textattr(lclr|(bclr<<4));
								putch(31);	/* put the dn arrow */
							}
							y++;
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							scroll_text(s_left+left+2,s_top+top+3
								,s_left+left+width-3,s_top+top+height-2,1);
							uprintf(s_left+left+3,s_top+top+3
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								,lbclr
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								,"%-*.*s",width-4,width-4,option[*cur]);
						}
						else {
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							gettext(s_left+3+left,s_top+y
								,s_left+left+width-2,s_top+y,line);
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							for(i=1;i<width*2;i+=2)
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								line[i]=lbclr;
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							puttext(s_left+3+left,s_top+y
								,s_left+left+width-2,s_top+y,line);
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						}
						break;
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					case CIO_KEY_PPAGE:	/* PgUp */
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						if(!opts)
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							break;
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						*cur -= (height-5);
						if(*cur<0)
							*cur = 0;
						if(bar)
							*bar=0;
						y=s_top+top;
						gotoxy(s_left+left+1,s_top+top+3);
						textattr(lclr|(bclr<<4));
						if(*cur && opts>height-3)  /* Scroll mode */
							putch(30);	   /* put the up arrow */
						else
							putch(' ');    /* delete the up arrow */
						gotoxy(s_left+left+1,s_top+top+height-2);
						if(opts > height-3 && *cur + height - 4 < opts)
							putch(31);	   /* put the down arrow */
						else
							putch(' ');    /* delete the down arrow */
						for(i=*cur,j=0;i<=*cur-5+height;i++,j++)
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							uprintf(s_left+left+3,s_top+top+3+j
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								,i==*cur ? lbclr
									: lclr|(bclr<<4)
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								,"%-*.*s",width-4,width-4,option[i]);
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						break;
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					case CIO_KEY_NPAGE:	/* PgDn */
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						if(!opts)
							break;
						*cur += (height-5);
						if(*cur>opts-1)
							*cur = opts-1;
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						if(bar)
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							*bar = height-5;
						y=height-5+s_top+top;
						gotoxy(s_left+left+1,s_top+top+3);
						textattr(lclr|(bclr<<4));
						if(*cur>height-5)  /* Scroll mode */
							putch(30);	   /* put the up arrow */
						else
							putch(' ');    /* delete the up arrow */
						gotoxy(s_left+left+1,s_top+top+height-2);
						if(*cur < opts-1)
							putch(31);	   /* put the down arrow */
						else
							putch(' ');    /* delete the down arrow */
						for(i=*cur+5-height,j=0;i<=*cur;i++,j++)
							uprintf(s_left+left+3,s_top+top+3+j
								,i==*cur ? lbclr
									: lclr|(bclr<<4)
								,"%-*.*s",width-4,width-4,option[i]);
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						break;
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					case CIO_KEY_END:	/* end */
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						if(!opts)
							break;
						if(opts+4>height) {	/* Scroll mode */
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							gotoxy(s_left+left+1,s_top+top+3);
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							textattr(lclr|(bclr<<4));
							putch(30);	   /* put the up arrow */
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							gotoxy(s_left+left+1,s_top+top+height-2);
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							putch(' ');    /* delete the down arrow */
							for(i=(opts+4)-height,j=0;i<opts;i++,j++)
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								uprintf(s_left+left+3,s_top+top+3+j
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									,i==opts-1 ? lbclr
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										: lclr|(bclr<<4)
									,"%-*.*s",width-4,width-4,option[i]);
							(*cur)=opts-1;
							y=top+height-2;
							if(bar)
								(*bar)=height-5;
							break; 
						}
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						gettext(s_left+3+left,s_top+y
							,s_left+left+width-2,s_top+y,line);
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						for(i=1;i<width*2;i+=2)
							line[i]=lclr|(bclr<<4);
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						puttext(s_left+3+left,s_top+y
							,s_left+left+width-2,s_top+y,line);
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						(*cur)=opts-1;
						y=top+height-2;
						if(bar)
							(*bar)=height-5;
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						gettext(s_left+3+left,s_top+y
							,s_left+left+width-2,s_top+y,line);
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						for(i=1;i<148;i+=2)
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							line[i]=lbclr;
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						puttext(s_left+3+left,s_top+y
							,s_left+left+width-2,s_top+y,line);
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						break;
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					case CIO_KEY_DOWN:	/* dn arrow */
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						if(!opts)
							break;
						if((*cur)==opts-1 && opts+4>height) { /* like home */
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							gotoxy(s_left+left+1,s_top+top+3);
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							textattr(lclr|(bclr<<4));
							putch(' ');    /* Delete the up arrow */
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							gotoxy(s_left+left+1,s_top+top+height-2);
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							putch(31);	   /* put the down arrow */
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							uprintf(s_left+left+3,s_top+top+3
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								,lbclr
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								,"%-*.*s",width-4,width-4,option[0]);
							for(i=1;i<height-4;i++)    /* re-display options */
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								uprintf(s_left+left+3,s_top+top+3+i
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									,lclr|(bclr<<4)
									,"%-*.*s",width-4,width-4,option[i]);
							(*cur)=0;
							y=top+3;
							if(bar)
								(*bar)=0;
							break; 
						}
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						gettext(s_left+3+left,s_top+y
							,s_left+left+width-2,s_top+y,line);
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						for(i=1;i<width*2;i+=2)
							line[i]=lclr|(bclr<<4);
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						puttext(s_left+3+left,s_top+y
							,s_left+left+width-2,s_top+y,line);
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						if((*cur)==opts-1) {
							(*cur)=0;
							y=top+3;
							if(bar) {
								/* gotoxy(1,1); cprintf("bar=%08lX ",bar); */
								(*bar)=0; 
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							}
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						}
						else {
							(*cur)++;
							y++;
							if(bar && (*bar)<height-5) {
								/* gotoxy(1,1); cprintf("bar=%08lX ",bar); */
								(*bar)++; 
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							}
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						}
						if(y==top+height-1) {	/* scroll */
							if(*cur==opts-1) {
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								gotoxy(s_left+left+1,s_top+top+height-2);
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								textattr(lclr|(bclr<<4));
								putch(' ');	/* delete the down arrow */
							}
							if((*cur)+4==height) {
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								gotoxy(s_left+left+1,s_top+top+3);
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								textattr(lclr|(bclr<<4));
								putch(30);	/* put the up arrow */
							}
							y--;
							/* gotoxy(1,1); cprintf("\rdebug: %4d ",__LINE__); */
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							scroll_text(s_left+left+2,s_top+top+3
								,s_left+left+width-3,s_top+top+height-2,0);
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							/* gotoxy(1,1); cprintf("\rdebug: %4d ",__LINE__); */
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							uprintf(s_left+left+3,s_top+top+height-2
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								,lbclr
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								,"%-*.*s",width-4,width-4,option[*cur]);
						}
						else {
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							gettext(s_left+3+left,s_top+y
								,s_left+left+width-2,s_top+y
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								,line);
							for(i=1;i<width*2;i+=2)
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								line[i]=lbclr;
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							puttext(s_left+3+left,s_top+y
								,s_left+left+width-2,s_top+y
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								,line);
						}
						break;
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					case CIO_KEY_F(1):	/* F1 */
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						api->showhelp();
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						break;