05. WPF Windows 바탕화면 변경하기

1. 화면 UI 구성

<Window x:Class="WpfWallpagerWithIActiveDesktop.MainWindow"         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"         Title="MainWindow" Height="350" Width="525">     <Grid>         <Button Name="btnChange" Content="바탕화면 변경" />     </Grid> </Window>

2. F7 버튼 클릭 하여 코드 비하인드 페이지 작성
   (WPF API 사용하여 다음과 같이 작성하여 바탕화면을 변경하도록 하고 있습니다)

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; using System.Runtime.InteropServices;   namespace WpfWallpagerWithIActiveDesktop {     /// <summary>     /// Interaction logic for MainWindow.xaml     /// </summary>     public partial class MainWindow : Window     {         public MainWindow()         {             InitializeComponent();               btnChange.Click += new RoutedEventHandler(btnChange_Click);         }           void btnChange_Click(object sender, RoutedEventArgs e)         {             int nResult ;             nResult = WinAPI.SystemParametersInfo(20, 0, "C:\\Penguins.jpg", 0x1 | 0x2);             MessageBox.Show("바탕화면 변경 되었습니다");         }     }       public class WinAPI     {         [DllImport("user32.dll", CharSet=CharSet.Auto)]         public static  extern int SystemParametersInfo                 (int uAction , int uParam , string lpvParam , int fuWinIni) ;     } }