Provided example for fn, update example in custom widgets

examples/custom_widget.rs

@@ -22,6 +22,10 @@ impl<'a> Widget for Label<'a> {
     fn render(self, area: Rect, buf: &mut Buffer) {
         buf.set_string(area.left(), area.top(), self.text, Style::default());
     }
+
+    fn render_dynamic(self: Box<Self>, area: Rect, buf: &mut Buffer) {
+        self.render(area, buf);
+    }
 }
 
 impl<'a> Label<'a> {
@@ -74,4 +78,4 @@ fn ui<B: Backend>(f: &mut Frame<B>) {
     let size = f.size();
     let label = Label::default().text("Test");
     f.render_widget(label, size);
-}
+}

src/terminal.rs

@@ -102,8 +102,29 @@ where
     }
 
     /// Render a boxed ['Widget'] with unknown size (['?Sized'])
+    /// # Examples
+    ///
+    /// ```rust
+    /// # use std::iter::zip;
+    /// # use tui::Terminal;
+    /// # use tui::backend::TestBackend;
+    /// # use tui::layout::{Constraint, Layout, Rect};
+    /// # use tui::widgets::Block;
+    /// # let backend = TestBackend::new(5, 5);
+    /// # let mut terminal = Terminal::new(backend).unwrap();
+    ///
+    /// let r = Rect::new(0,0,16,16);
+    /// let widgets = [Box::new(Block::default())].repeat(4);
+    /// let rects = Layout::default().constraints([Constraint::Ratio(1,4)].repeat(4).as_ref()).split();
+    ///
+    /// let mut frame = terminal.get_frame();
+    /// for (widget,rect) in zip(widgets, rects) {
+    ///     frame.render_widget_dynamic(widget, rect);
+    /// }
+    /// ```
     pub fn render_widget_dynamic(&mut self, widget : Box<dyn Widget>, area: Rect)
     {
+
         widget.render_dynamic(area, self.terminal.current_buffer_mut());
     }