本文介绍了一段使用VBA实现窗体拖动功能的代码。通过调用ReleaseCapture和SendMessage函数，使得List1控件响应鼠标点击并拖动事件，从而实现整个窗体的移动操作。
Option Explicit
Private Declare Function ReleaseCapture Lib "user32" () As Long
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Private Const HTCAPTION = 2
Private Const WM_NCLBUTTONDOWN = &HA1
Private Sub List1_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
If Button = 1 Then
ReleaseCapture
SendMessage List1.hwnd, WM_NCLBUTTONDOWN, HTCAPTION, 0&
End If
End Sub
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