Win+D怎么实现

Win+D 是用于显示桌面的快捷键。要实现 Win+D 的效果，可以借助 Windows API 函数来实现。

以下是 VB.NET 中实现 Win+D 的代码：

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 Integer

    End Function

    Private Const KEYEVENTF_EXTENDEDKEY As Integer = &H1
    Private Const KEYEVENTF_KEYUP As Integer = &H2
    Private Const VK_LWIN As Integer = &H5B
    Private Const VK_D As Integer = &H44

    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        Me.KeyPreview = True
    End Sub

    Private Sub Form1_KeyDown(sender As Object, e As KeyEventArgs) Handles MyBase.KeyDown
        If e.KeyCode = Keys.D AndAlso e.Modifiers = Keys.LWin Then
            keybd_event(VK_LWIN, 0, KEYEVENTF_EXTENDEDKEY, 0)
            keybd_event(VK_D, 0, 0, 0)
            keybd_event(VK_D, 0, KEYEVENTF_KEYUP, 0)
            keybd_event(VK_LWIN, 0, KEYEVENTF_KEYUP Or KEYEVENTF_EXTENDEDKEY, 0)
        End If
    End Sub

End Class

以上代码使用了 keybd_event 函数模拟按下 Win+D 快捷键，当用户按下 Form1 窗体的 LWin+D 组合键时，会触发 Form1_KeyDown 事件，从而执行对应的操作，实现 Win+D 的效果。