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最近在看《深入浅出WPF》，在做练习的时候自己做了一下扩展，在此记下：
XAML代码：
1 <Window x:Class="TestCanvas.MainWindow"
2 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
3 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
4 Title="登录" Height="110px" Width="300px" WindowStartupLocation="CenterScreen" WindowStyle="None"
5 MaxHeight="110px" MaxWidth="300px" MinHeight="110px" MinWidth="300px" MouseDown="Mouse_downHandler">
6 <Canvas>
7 <TextBlock Text="用户名：" Canvas.Left="12px" Canvas.Top="12px"/>
8 <TextBox x:Name="tbUserName" Height="23px" Width="200px" BorderBrush="Black" Canvas.Left="66px" Canvas.Top="9px"/>
9 <TextBlock Text="密码：" Canvas.Left="12px" Canvas.Top="40.72px" Height="16px" Width="36px"/>
10 <TextBox x:Name="tbPasword" Height="23px" Width="200px" BorderBrush="Black" Canvas.Left="66px" Canvas.Top="38px"/>
11 <Button Content="登录" Width="80px" Height="23px" Canvas.Left="66" Canvas.Top="67px"/>
12 <Button Content="退出" Width="80px" Height="23px" Canvas.Left="186" Canvas.Top="67px" Click="Close_clickHandler"/>
13 </Canvas>
14 </Window>
CSharp代码：
1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Runtime.InteropServices;
5 using System.Text;
6 using System.Threading.Tasks;
7 using System.Windows;
8 using System.Windows.Controls;
9 using System.Windows.Data;
10 using System.Windows.Documents;
11 using System.Windows.Input;
12 using System.Windows.Media;
13 using System.Windows.Media.Imaging;
14 using System.Windows.Navigation;
15 using System.Windows.Shapes;
16
17 namespace TestCanvas
18 {
19 /// <summary>
20 /// MainWindow.xaml 的交互逻辑
21 /// </summary>
22 public partial class MainWindow : Window
23 {
24 [StructLayout(LayoutKind.Sequential)]
25 public struct POINT
26 {
27 public int X;
28 public int Y;
29
30 public POINT(int x, int y)
31 {
32 this.X = x;
33 this.Y = y;
34 }
35 }
36
37 [DllImport("user32.dll", CharSet = CharSet.Auto)]
38 public static extern bool GetCursorPos(out POINT pt);
39
40 public MainWindow()
41 {
42 InitializeComponent();
43 }
44
45 public void Close_clickHandler(Object sender, RoutedEventArgs e)
46 {
47 this.Close();
48 }
49
50 private void Mouse_downHandler(object sender, MouseButtonEventArgs e)
51 {
52 Point p = e.MouseDevice.GetPosition(this); //获取鼠标相对位置
53
54 MainWindow.POINT pit = new MainWindow.POINT();
55 MainWindow.GetCursorPos(out pit); //获取鼠标绝对位置
56
57 StringBuilder sbRel = new StringBuilder();
58 sbRel.Append("相对位置：(");
59 sbRel.Append(p.X);
60 sbRel.Append(",");
61 sbRel.Append(p.Y);
62 sbRel.Append(")");
63 tbUserName.Text = sbRel.ToString();
64
65 StringBuilder sbAbs = new StringBuilder();
66 sbAbs.Append("绝对位置：(");
67 sbAbs.Append(pit.X);
68 sbAbs.Append(",");
69 sbAbs.Append(pit.Y);
70 sbAbs.Append(")");
71 tbPasword.Text = sbAbs.ToString();
72 }
73 }
74 }