自学教程：C++ xv_set函数代码示例

static voidfunc_update(){    char *label;    int value;    value = (int)xv_get(vsi.func_choice, PANEL_VALUE);    label = (char *)xv_get(vsi.func_choice, PANEL_CHOICE_STRING, value);    delete vsi.default_vsfunc;    if (strcasecmp(label,"linear") == 0){	vsi.default_vsfunc = linear_scale();	vsi.myknots = LIN_KNOTS;	xv_set(vsi.popup, FRAME_LEFT_FOOTER,	       "LEFT moves/creates, MIDDLE deletes points", NULL);    }else if (strcasecmp(label,"spline") == 0){	vsi.default_vsfunc = spline_scale();	vsi.myknots = SPL_KNOTS;	xv_set(vsi.popup, FRAME_LEFT_FOOTER,	       "LEFT moves/creates, MIDDLE deletes points", NULL);    }else if (strcasecmp(label,"log") == 0){	vsi.default_vsfunc = log_scale();    }else if (strcasecmp(label,"power") == 0){	vsi.default_vsfunc = power_scale();    }else if (strcasecmp(label,"curve") == 0){	vsi.default_vsfunc = curve_scale();	vsi.myknots = CRV_KNOTS;	xv_set(vsi.popup, FRAME_LEFT_FOOTER, "LEFT moves points", NULL);    }}

/*************************************************************************									**  Create macro display window. It actually creates it when the first*  message is displayed.*									*/voidmsgmacro_win_create(Frame owner, int x, int y, int wd, int ht){   if (wmacromsg)   {      STDERR("msgmacro_win_create:Window has been created");      return;   }   if ((wmacromsg = (Wmsgprt *)malloc(sizeof(Wmsgprt))) == NULL)   {      PERROR("msgmacro_win_create:Cannot malloc");      return;   }   wmacromsg->owner = owner;   wmacromsg->popup = NULL;   wmacromsg->textsw = NULL;   wmacromsg->x = x;   wmacromsg->y = y;   wmacromsg->wd = wd;   wmacromsg->ht = ht;   /* Since there is a BUG in Xview, we cannot wait to create a window. */   /* Until the bug is fixed, we create a window at start-up time (NOW). */   msgprt_win_create(wmacromsg);   xv_set(wmacromsg->popup,	  FRAME_LABEL, "Macro Edit",	  NULL);   xv_set(wmacromsg->textsw,	  TEXTSW_BROWSING, FALSE,	  WIN_KBD_FOCUS, TRUE,	  NULL);}

/*************************************************************************									**  Show Info message.							**  Note that it DOES NOT prefix the message with a newline.		**									*/voidmsginfo_print(char *format, ...){   char msgbuf[128];	/* message buffer */   va_list vargs;	/* variable argument pointer */   /* Create window message if it is not created */   if (winfomsg->popup == NULL)   {      msgprt_win_create(winfomsg);      xv_set(winfomsg->popup, FRAME_LABEL, "Info Messages", NULL);   }   if ( (xv_get(winfomsg->popup, XV_SHOW) == FALSE) || (format == NULL) ){      xv_set(winfomsg->popup, XV_SHOW, TRUE, NULL);      xv_set(winfomsg->popup, FRAME_CMD_PUSHPIN_IN, TRUE, NULL);   }   if (format == NULL)      return;      va_start(vargs, format);   (void)vsprintf(msgbuf, format, vargs);   va_end(vargs);   int point = (int)xv_get(winfomsg->textsw, TEXTSW_INSERTION_POINT);   show_msg_text(winfomsg->textsw, msgbuf);   if (point == 0){       xv_set(winfomsg->textsw, TEXTSW_FIRST, point, NULL);   }}

/*************************************************************************                                                                       **  Turn on/off constant value item.					**  (STATIC)								**									*/voidWin_arith::apply_proc(Panel_item, int val){   if (val == 0){       xv_set(winarith->constant_item, PANEL_SHOW_ITEM, FALSE, NULL);   }else{       xv_set(winarith->constant_item, PANEL_SHOW_ITEM, TRUE, NULL);   }}

void ResizeZTScale(){    xv_set(ztscl_top_canvas, XV_X, 0, XV_Y, 0,	   XV_WIDTH, ZCvsWidth+ZTrkLabWidth,	   NULL);    xv_set(ztscl_bot_canvas, XV_X, 0, XV_Y, ZCvsHeight+ZTSHEIGHT-1,	   XV_WIDTH, ZCvsWidth+ZTrkLabWidth,	   NULL);    return;}

voidset_vscale(float datamax, float datamin){    char buf[20];    sprintf(buf,"%-.4g", datamin);    xv_set(vsi.min_data, PANEL_VALUE, buf, NULL);    sprintf(buf,"%-.4g", datamax);    xv_set(vsi.max_data, PANEL_VALUE, buf, NULL);    settings_update();    func_update();}

void ZTimeScale_disp_undisp(){    if (ZoomWindowMapped) {	if(Mode_ZDisplayTScale) {	    xv_set(ztscl_top_canvas, XV_SHOW, TRUE, NULL);	    xv_set(ztscl_bot_canvas, XV_SHOW, TRUE, NULL);	}else {	    xv_set(ztscl_top_canvas, XV_SHOW, FALSE, NULL);	    xv_set(ztscl_bot_canvas, XV_SHOW, FALSE, NULL);	}    }    ResizeZoomWindow();}

/* this is an unfortunate consequence of having 2 event procs handling the * same canvas. Since we mapped the left mouse button twice, the user has * to decide which one to use: */void tt_togglePicking(){    if(tt_button_picking) {	/* switch back to trvltime event proc */	SwitchTTZevtProc();	tt_button_picking= 0;	xv_set(pick_but, PANEL_LABEL_STRING, "To Pick ", NULL);    }else {	/* switch back to original event proc */	RestoreZevtProc();	tt_button_picking= 1;	xv_set(pick_but, PANEL_LABEL_STRING, "TrvlTme", NULL);    }}

/*************************************************************************									**  Print out directory name on file-browser.  It limits the length of 	**  the string to be printed out.					**									*/static voidshow_dir_path(char *dirpath){    /* Append ... at the first three charcaters and cut-off the characters */    /* which can not be showed up on the control-panel.			 */    if (strlen(dirpath) > (fhdl->filename_wd / 8)){	char dirbuf[128];	(void) sprintf(dirbuf, "...%s",		       dirpath + strlen(dirpath) - (fhdl->filename_wd / 8));	xv_set(fhdl->dirmsg, PANEL_LABEL_STRING, dirbuf, NULL);    }else{	xv_set(fhdl->dirmsg, PANEL_LABEL_STRING, dirpath, NULL);    }}

static voidcanvas_resize_proc(Canvas, int w, int h){    /*fprintf(stderr,"canvas_resize_proc(%d, %d)/n", w, h);/*CMP*/    vsi.canvas_width = w;    vsi.canvas_height = h;    xv_set(vsi.range_label,	   XV_X, (vsi.canvas_width - (int)xv_get(vsi.range_label, XV_WIDTH))/2,	   NULL);    xv_set(vsi.max_data,	   XV_X, vsi.canvas_width - (int)xv_get(vsi.max_data, XV_WIDTH),	   NULL);    build_background();    build_curve_data(vsi.default_vsfunc);}

/*************************************************************************                                                                       **  Expression text callback routine.*  (STATIC)								**									*/voidWin_math::text_proc(Panel_item item, Event *event){    short action = event_action(event);    short chr = xview_to_ascii(action);    fprintf(stderr,"char=0x%x/n", chr);    /*fprintf(stderr,"posn=%d/n",	    (int)xv_get(item, PANEL_TEXT_CURSOR));*/    xv_set(item, PANEL_TEXT_SELECT_LINE, NULL);#ifndef LINUX    textsw_set_selection(wm->expression_box, 1, 4, 1);#endif    xv_set(wm->expression_box, TEXTSW_INSERTION_POINT, 4, NULL);}

static void CreateTracks(Frame frame){    int height, i, y;    int tsHeight= 30;    int panel_width = top_panel_width;    if((FrmHeight-panel_width-tsHeight)/NumTracks < 30)	tsHeight= 15;    if (Mode_align) {	/* reserve space for time scale */	height= (float)(FrmHeight-panel_width-tsHeight)/NumTracks;	tsHeight= FrmHeight-panel_width-height*NumTracks;    }else {	height= (float)(FrmHeight-panel_width)/NumTracks;    }    y=panel_width;    for(i=0; i < NumTracks; i++) {	CreateTrk(frame, i, height, FrmWidth, y);	y+=height;    }    /* create one for time scale if necessary */    CreateTimeScale(frame, y, tsHeight);    if(!Mode_align) {	extern Canvas tscl_canvas;      	/*      xv_set(frame,XV_SHOW,FALSE,NULL); */	/*      printf("remove time bar/n"); */	xv_set(tscl_canvas,XV_SHOW,FALSE,NULL);	/*CreateTimeScale(frame, y, tsHeight);*/    }}

/* * Create object `window1' in the specified instance. */Xv_opaqueSoundingChart_GUI_window1_window1_create(SoundingChart_GUI_window1_objects *ip, Xv_opaque owner){	extern Notify_value	window_event_func(Xv_window, Event *, Notify_arg, Notify_event_type);	Xv_opaque	obj;		obj = xv_create(owner, FRAME,		XV_KEY_DATA, INSTANCE, ip,		XV_WIDTH, 661,		XV_HEIGHT, 597,		XV_LABEL, "Base Window",		FRAME_SHOW_FOOTER, FALSE,		FRAME_SHOW_RESIZE_CORNER, TRUE,		NULL);	xv_set(obj, WIN_CONSUME_EVENTS,		WIN_MOUSE_BUTTONS,		LOC_MOVE,		LOC_DRAG,		LOC_WINENTER,		LOC_WINEXIT,		WIN_ASCII_EVENTS,		WIN_LEFT_KEYS,		WIN_RIGHT_KEYS,		WIN_TOP_KEYS,		NULL, NULL);	notify_interpose_event_func(obj,		(Notify_func) window_event_func, NOTIFY_SAFE);	return obj;}

/************************************************************************ *                                                                       * *  Stop Movie Playback procedure                   			* *									*/voidWin_movie::stop_playback(void){   if (play_state == PLAYING){       // do nothing if NOT currently playing       ipgwin_register_user_func(MOVIE_TICK, 1, 0, (void(*)(int)) NULL);       play_state = NOT_PLAYING;       if (number_of_frames > 1){	   xv_set(frame_slider,		  PANEL_VALUE, frame_number + 1,		  XV_SHOW, TRUE,		  NULL);       }       framelist_select (frame_number) ;       xv_set(movie_speedometer, PANEL_VALUE, 0, NULL);   }}

/* * Create object `em_tp' in the specified instance. */Xv_opaqueeventman_em_bw_em_tp_create(eventman_em_bw_objects *ip, Xv_opaque owner){	extern Notify_value	comment_text_proc(Xv_window, Event *, Notify_arg, Notify_event_type);	Xv_opaque	obj;		obj = xv_create(owner, TEXTSW,		XV_KEY_DATA, INSTANCE, ip,		XV_X, 0,		XV_Y, (int)xv_get(ip->em_cp, XV_Y) +		      (int)xv_get(ip->em_cp, XV_HEIGHT),		XV_WIDTH, WIN_EXTEND_TO_EDGE,		XV_HEIGHT, WIN_EXTEND_TO_EDGE,		OPENWIN_SHOW_BORDERS, TRUE,		NULL);	gcm_initialize_colors(obj, "White", "Black");	xv_set(textsw_first(obj), WIN_CONSUME_EVENTS,		WIN_MOUSE_BUTTONS,		LOC_MOVE,		LOC_DRAG,		LOC_WINENTER,		LOC_WINEXIT,		WIN_ASCII_EVENTS,		WIN_LEFT_KEYS,		WIN_RIGHT_KEYS,		WIN_TOP_KEYS,		NULL, NULL);	notify_interpose_event_func(textsw_first(obj),		(Notify_func) comment_text_proc, NOTIFY_SAFE);	return obj;}

void GetString(char *label, char *str, int numch){    Panel in_panel;    int x, y;    in_buf=(char *)Malloc(numch+1);    if (in_buf==NULL) return;	/* not enuff mem */    in_numch= numch;    *in_buf='/0';    x= (int)xv_get(tracesFrame,XV_X);    y= (int)xv_get(tracesFrame,XV_Y);    in_frame=(Frame)xv_create(tracesFrame, FRAME_CMD,	FRAME_LABEL, "",	FRAME_DONE_PROC, in_done_proc,	XV_X, FrmWidth/2+x-150, XV_Y, FrmHeight/2+y-50,	XV_HEIGHT, 100, XV_WIDTH, 300,	NULL);    in_panel=(Panel)xv_get(in_frame, FRAME_CMD_PANEL);    in_text=(Panel_item)xv_create(in_panel, PANEL_TEXT,	XV_X, 10, XV_Y, 40,	PANEL_LAYOUT, PANEL_VERTICAL,	PANEL_LABEL_STRING, label,	PANEL_VALUE_DISPLAY_WIDTH, 280,	PANEL_NOTIFY_PROC, in_notify_proc,	NULL);    xv_set(in_frame, XV_SHOW, TRUE, NULL);    in_loop=1;    (void)xv_window_loop(in_frame);    in_loop=0;    xv_destroy_safe(in_frame);    strncpy(str, in_buf, numch);    free(in_buf);}

/*************************************************************************									**  Create error message window. It actually creates it when the first	**  message is displayed.*									*/voidmsgerr_win_create(Frame owner, int x, int y, int wd, int ht){   if (werrmsg)   {      STDERR("msgerr_win_create:Window has been created");      return;   }   if ((werrmsg = (Wmsgprt *)malloc(sizeof(Wmsgprt))) == NULL)   {      PERROR("msgerr_win_create:Cannot malloc");      return;   }   werrmsg->owner = owner;   werrmsg->popup = NULL;   werrmsg->textsw = NULL;   werrmsg->x = x;   werrmsg->y = y;   werrmsg->wd = wd;   werrmsg->ht = ht;   /* Since there is a BUG in Xview, we cannot wait to create a window. */   /* Until the bug is fixed, we create a window at start-up time (NOW). */   msgprt_win_create(werrmsg);   xv_set(werrmsg->popup, FRAME_LABEL, "Error Messages", NULL);}

static void update_em_evt_list(){    EqEvent *cur= getCurrentEvt();#if 0    EqEvent *evt= getEventHead();#endif    EqEvent *evt= getEventTail();    int idx= 0;    char buf[1000];    while (evt) {	if (evt->evt && evt->evt->next!=NULL) {	    sprintf(buf,"%s ...", evt->evt->name);	}else {	    sprintf(buf,"%s", evt->evt->name);	}#if 0	if (evt==cur) {	    xv_set(em_evt_i, PANEL_LIST_INSERT, idx,		   PANEL_LIST_STRING, idx, buf,		   PANEL_LIST_SELECT, idx, TRUE,		   NULL);	}else {	    xv_set(em_evt_i, PANEL_LIST_INSERT, idx,		   PANEL_LIST_STRING, idx, buf,		   PANEL_LIST_SELECT, idx, FALSE,		   NULL);	}	evt=evt->next;#endif	if (evt==cur) {	    xv_set(em_evt_i, PANEL_LIST_INSERT, 0,		   PANEL_LIST_STRING, 0, buf,		   PANEL_LIST_SELECT, 0, TRUE,		   NULL);	}else {	    xv_set(em_evt_i, PANEL_LIST_INSERT, 0,		   PANEL_LIST_STRING, 0, buf,		   PANEL_LIST_SELECT, 0, FALSE,		   NULL);	}	evt=evt->prev;	idx++;    }    xv_set(em_evt_i, XV_KEY_DATA, NUM_ITEMS, idx, NULL);}

static void em_reset(){    int num= (int)xv_get(em_evt_i, XV_KEY_DATA, NUM_ITEMS);    if(num>0) {	xv_set(em_evt_i, PANEL_LIST_DELETE_ROWS, 0, num, NULL);    }    update_em_evt_list();}

/*************************************************************************                                                                       **  Dismiss the popup window.						**  (STATIC)								**									*/voidWin_math::done_proc(Frame subframe){    xv_set(subframe, XV_SHOW, FALSE, NULL);    delete wm;    wm = NULL;    win_print_msg("Math: Exit");}

/*************************************************************************                                                                       **  high_frame_set                                                        **									*/Panel_settingWin_movie::high_frame_set(Panel_item item, int, Event *){    int n = (int)xv_get(item, PANEL_VALUE);    high_frame = n - 1;    xv_set(low_frame_item, PANEL_MAX_VALUE, n, NULL);    return (PANEL_NONE) ;}

/*************************************************************************                                                                       **  Dismiss the popup window.						**  (STATIC)								**									*/voidWin_histenhance::done_proc(Frame subframe){   xv_set(subframe, XV_SHOW, FALSE, NULL);   delete winhist;   winhist = NULL;   win_print_msg("Histogram: Exit");}

/************************************************************************ *                                                                       * *  Dismiss the popup window.						* *  (STATIC)								* *									*/voidWin_rot::done_proc(Frame subframe){    xv_set(subframe, XV_SHOW, FALSE, NULL);    delete winrot;    winrot = NULL;    win_print_msg("Image rotation: Exit");}

/*************************************************************************									**  Update the file list from the current directory.  The files might be	**  added or deleted.							**									*/voidfilelist_update(void){    if (fhdl && fhdl->filename){	xv_set(fhdl->filename, PANEL_VALUE, "", NULL);	(void) file_listing(dirname);    }}

void tt_updateOTitem(STI_TIME it){    STE_TIME et = sti_to_ste(it);    char buf[30];    float sec = (float)et.second + (float)et.usec / USECS_PER_SEC;        sprintf(buf,"%d:%d:%.2f",et.hour,et.minute,sec);    xv_set(ot_txt, PANEL_VALUE, buf, NULL);}

static Select_Info *initialize_Graph_Select_Reg(void){    Panel panel;    Frame	gsr_frame =  NULL;    Canvas gsr_cvs =  NULL;    Window gsr_win;    Xv_Window window;    Select_Info *ret_val = (Select_Info*)Malloc(sizeof(Select_Info));    gsr_frame = xv_create(tracesFrame, FRAME,			XV_HEIGHT, gsrwin_h+40, XV_WIDTH, gsrwin_w,			NULL);		      gsr_cvs =  xv_create(gsr_frame, CANVAS,		       XV_X, 0, XV_Y, 40,		  		       CANVAS_REPAINT_PROC, redraw_gsrwin,		       CANVAS_RESIZE_PROC, resize_gsrwin,		       NULL);		      gsr_win =  xv_get(canvas_paint_window(gsr_cvs), XV_XID);    handle_colours(gsr_win);    window = (Xv_Window)xv_get(gsr_cvs,CANVAS_NTH_PAINT_WINDOW,0);    xv_set(window,WIN_EVENT_PROC,gsr_event_handle,	   WIN_CONSUME_EVENTS,WIN_MOUSE_BUTTONS,NULL,	   NULL);    panel =  (Panel)xv_create(gsr_frame, PANEL,			    XV_X, 0, XV_Y, 0, XV_HEIGHT, 40,			    NULL);    (void)xv_create(panel, PANEL_BUTTON,		    PANEL_LABEL_STRING, "Quit",		    PANEL_NOTIFY_PROC, close_gsr_win,		    PANEL_CLIENT_DATA,gsr_frame,		    NULL);    (void)xv_create(panel, PANEL_BUTTON,		    PANEL_LABEL_STRING, "Select All",		    PANEL_NOTIFY_PROC, gsr_select_all,		    XV_KEY_DATA, PANEL_SEL_REG,ret_val,		    NULL);    (void)xv_create(panel, PANEL_BUTTON,		    PANEL_LABEL_STRING, "Deselect All",		    PANEL_NOTIFY_PROC, gsr_deselect_all,		    XV_KEY_DATA, PANEL_SEL_REG,ret_val,		    NULL);    (void)xv_create(panel, PANEL_BUTTON,		    PANEL_LABEL_STRING, "Default Selection",		    PANEL_NOTIFY_PROC, gsr_default,		    XV_KEY_DATA, PANEL_SEL_REG,ret_val,		    NULL);    init_selection_values(ret_val);    ret_val->can = gsr_cvs;    ret_val->board = gsr_frame;    ret_val->wind = gsr_win;    createGC(gsr_win, &ret_val->txtgc);    fil_sel_reg(ret_val);    return ret_val;}

void RedrawBothZTScale(){    int *temp;    if (Mode_align && Mode_ZDisplayTScale) {	XClearWindow(theDisp, ztscl_top_win);	DrawTimeScale(ztscl_top_win, ztscl_gc, ts_xstart+ZTrkLabWidth,		      ZTrkLabWidth, ts_tstart, time_inc, ZCvsWidth,		      ZTSHEIGHT, ZTotalSeconds, TS_UP);	XClearWindow(theDisp, ztscl_bot_win);	DrawTimeScale(ztscl_bot_win, ztscl_gc, ts_xstart+ZTrkLabWidth,		      ZTrkLabWidth, ts_tstart, time_inc, ZCvsWidth,		      ZTSHEIGHT, ZTotalSeconds, TS_DN);	xv_set(ztscl_top_canvas,XV_SHOW,TRUE,NULL);	xv_set(ztscl_bot_canvas,XV_SHOW,TRUE,NULL);    } else {	xv_set(ztscl_top_canvas,XV_SHOW,FALSE,NULL);	xv_set(ztscl_bot_canvas,XV_SHOW,FALSE,NULL);    }}

static void choice_notify_proc(Panel_item item, int value, Event *event){    char *val, buf[100];    if (value!=nsamp_or_sec) {        val= (char *)xv_get(len_txt, PANEL_VALUE);        if (value==0) {            /* nsamp: save seconds and set nsamp */            sp_sec= atof(val);            sprintf(buf,"%d",sp_nsamp);            xv_set(len_txt, PANEL_VALUE, buf, NULL);        } else {            /* sec: save nsamp and set secs */            sp_nsamp= atoi(val);            sprintf(buf,"%f",sp_sec);            xv_set(len_txt, PANEL_VALUE, buf, NULL);        }    }    nsamp_or_sec=value;}

/*************************************************************************									**  Initialize anything related to zoom.  It is called when the user just**  selects the gtool Zoom.						**									*/voidZoom_routine::start(Panel props, Gtype gtype){   WARNING_OFF(gtype);   active = TRUE;   xv_set(props, PANEL_ITEM_MENU, props_menu, NULL);   Gtools::set_props_label("Zoom Properties");//   G_Set_LineWidth(Gframe::gdev, 2);   Zoomf::draw_zoom_lines();	// Draw zoom-lines}