Imports System
Imports System.Runtime.InteropServices
Imports System.Drawing
Imports Microsoft.Win32

Public Class Wallpaper
    Const SPI_SETDESKWALLPAPER As Integer = 20
    Const SPIF_UPDATEINIFILE As Integer = &H1&
    Const SPIF_SENDWININICHANGE As Integer = &H2&

    "user32") /> _
    Public Shared Function SystemParametersInfo(ByVal uAction As Integer, _
        ByVal uParam As Integer, ByVal lpvParam As String, ByVal fuWinIni As Integer) _
            As Integer
    End Function

    Public Enum Style As Integer
        Tiled
        Centered
        Stretched
    End Enum

    Public Sub SetWallpaper(ByVal path As String, ByVal selectedStyle As Style)
        Dim key As RegistryKey = My.Computer.Registry.CurrentUser.OpenSubKey_
            ("Control Panel\Desktop", True)

        Select Case selectedStyle
            Case Style.Stretched
                key.SetValue("WallpaperStyle", "2")
                key.SetValue("TileWallpaper", "0")

            Case Style.Centered
                key.SetValue("WallpaperStyle", "1")
                key.SetValue("TileWallpaper", "0")

            Case Style.Tiled
                key.SetValue("WallpaperStyle", "1")
                key.SetValue("TileWallpaper", "1")
        End Select

        SystemParametersInfo(SPI_SETDESKWALLPAPER, 0, path, SPIF_UPDATEINIFILE _
            Or SPIF_SENDWININICHANGE)
    End Sub
End Class