rt-thread/examples/gui/demo_fnview.c

#include "demo_view.h"
#include <rtgui/widgets/label.h>
#include <rtgui/widgets/button.h>
// #include <rtgui/widgets/fn_view.h>

static rtgui_label_t* label;
void open_btn_onbutton(rtgui_widget_t* widget, struct rtgui_event* event)
{
    /* create a fn view */
}

rtgui_view_t* demo_fn_view(rtgui_workbench_t* workbench)
{
    rtgui_rect_t rect;
    rtgui_view_t* view;
    rtgui_button_t* open_btn;
    rtgui_font_t* font;

    view = demo_view(workbench);
    rtgui_widget_get_rect(RTGUI_WIDGET(view), &rect);

    font = rtgui_font_refer("asc", 12);

    rect.x1 += 5; rect.x2 -= 5;
    rect.y1 += 5; rect.y2 = rect.y1 + 20;
    label = rtgui_label_create("fn: ");
    rtgui_container_add_child(RTGUI_CONTAINER(view), RTGUI_WIDGET(label));
    rtgui_widget_set_rect(RTGUI_WIDGET(label), &rect);
	RTGUI_WIDGET_FONT(RTGUI_WIDGET(label)) = font;

    rtgui_widget_get_rect(RTGUI_WIDGET(view), &rect);
    rect.x1 += 5; rect.x2 = rect.x1 + 80;
    rect.y1 += 30; rect.y2 = rect.y1 + 20;
    open_btn = rtgui_button_create("Open File");
    rtgui_container_add_child(RTGUI_CONTAINER(view), RTGUI_WIDGET(open_btn));
    rtgui_widget_set_rect(RTGUI_WIDGET(open_btn), &rect);
	RTGUI_WIDGET_FONT(RTGUI_WIDGET(open_btn)) = font;
	rtgui_button_set_onbutton(open_btn, open_btn_onbutton);

    return view;
}