如题，用了SetCapture,窗体控件就沅法单击，不知何故？

Private Sub Form_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
    With Form1
        If X > 0 And X < Form1.Width And Y > 0 And Y < Form1.Height Then
            SetCapture Form1.hwnd
            Me.Caption = "进来了"
        Else
            ReleaseCapture
            Me.Caption = "出去了"
        End If
    End With
End Sub

你要看这两个过程：
SetCapturehe
和 ReleaseCapture
是怎么定义的