'窗口移动API
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 WM_SYSCOMMAND = &H112
Private Const SC_MOVE = &HF010&
Private Const WM_NCLBUTTONDOWN = &HA1
Private Const HTCAPTION = 2

Private Sub command1_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
   ReleaseCapture
   SendMessage hwnd, WM_NCLBUTTONDOWN, HTCAPTION, 0&
End Sub

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