《WPF程序设计指南》读书笔记——第3章 内容的概念_.NET_编程开发_程序员俱乐部

1.Content属性及字体相关的属性

class="brush:csharp;collapse:true;;gutter:true;">using System;
using System.Windows;
using System.Windows.Media;

namespace LY.DisplaySomeText
{
    public class DisplaySomeText:Window
    {
        Brush brush = new LinearGradientBrush(Colors.Black, Colors.White, new Point(0, 0), new Point(1, 1));
        [STAThread]
        public static void Main()
        {
            new Application().Run(new DisplaySomeText());            
        }
        public DisplaySomeText()
        {
            Title = "Display Some Text";
            //Content = "Content can be simple text!";            
            //Content = System.EventArgs.Empty;
            Content = DateTime.Now;
            //设置字体系列
            FontFamily = new FontFamily("宋体");
            FontSize = 48;
            FontStyle = FontStyles.Italic;
            FontWeight = FontWeights.Bold;
            //Background = brush;
            Foreground = brush;
            //将窗口大小调整为适应内容的大小
            SizeToContent = SizeToContent.WidthAndHeight;
            //设置边框的画刷
            BorderBrush = Brushes.Red;
            //设置上下左右边框的宽度
            BorderThickness = new Thickness(25, 50, 75, 100);
        }
    }    
}

　　1）没有Font类，需通过FontFamily（字体系列），FontSize、FontStyle、FontWeight等属性来设置。

using System;
using System.Windows;
using System.Windows.Media;
using System.Windows.Input;

namespace LY.RecordKeyStrokes
{
    public class RecordKeyStrokes:Window
    {
        [STAThread]
        public static void Main()
        {
            Application app = new Application();
            app.Run(new RecordKeyStrokes());
        }
        public RecordKeyStrokes()
        {
            Title = "Record Key Strokes";
            Content = "";
        }
        protected override void OnTextInput(TextCompositionEventArgs e)
        {
            base.OnTextInput(e);
            string str = Content as string;
            if (e.Text == "\b")
            {
                if (str.Length > 0)
                    str = str.Substring(0, str.Length - 1);
            }
            else 
            {
                str += e.Text;
            }
            Content = str;
        }
    }
}

　　1）Content属性的值发生变化后，屏幕会自动更新。