怎么用vb.net实现Win+d的效果

在 VB.NET 中，可以使用 SendKeys 类来模拟按键操作，实现 Win+D 的效果。具体代码如下：

Imports System.Runtime.InteropServices

Public Class Form1
    <DllImport("user32.dll")>
    Private Shared Function keybd_event(ByVal bVk As Byte, ByVal bScan As Byte, ByVal dwFlags As Integer, ByVal dwExtraInfo As Integer) As Boolean
    End Function

    Private Const VK_LWIN As Byte = &H5B
    Private Const VK_D As Byte = &H44
    Private Const KEYEVENTF_KEYUP As Integer = &H2

    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        ' 模拟按下 Win+D
        keybd_event(VK_LWIN, 0, 0, 0)
        keybd_event(VK_D, 0, 0, 0)
        keybd_event(VK_D, 0, KEYEVENTF_KEYUP, 0)
        keybd_event(VK_LWIN, 0, KEYEVENTF_KEYUP, 0)
    End Sub
End Class

上述代码中，使用了 keybd_event 函数来模拟按键操作。首先按下 Win 键，然后按下 D 键，再释放 D 键和 Win 键。这样就实现了 Win+D 的效果。