有没有一种方法发送windows键使用API，dll等，而不使用外部程序，如AutoIt
是的，您可以使用FindWindow和ShowWindow API来最大化窗口。这比使用Sendkeys更可靠。
以下是一个示例

Option Explicit

Private Declare PtrSafe Function ShowWindow Lib "user32" _
(ByVal hwnd As LongPtr, ByVal nCmdSHow As Long) As Long

Private Declare PtrSafe Function FindWindow Lib "user32" Alias "FindWindowA" _
(ByVal lpClassName As String, ByVal lpWindowName As String) As LongPtr

Private Const SW_SHOWMAXIMIZED = 3

Sub MaximizeAWindow()
    Dim hwnd As Long
    Dim Caption As String
    
    Caption = "THIS IS THE CAPTION OF THE WINDOW"
    
    hwnd = FindWindow(vbNullString, Caption)
    
    If hwnd <> 0 Then
        ShowWindow hwnd, SW_SHOWMAXIMIZED
    Else
        MsgBox "Unable to find the window. Is the caption correct?"
    End If
End Sub

您可能还对GetForegroundWindow和GetWindowText API感兴趣，以便获取当前活动窗口的标题？