请指点一下,为什么以下代码编译出错?
Private Const WM_CLOSE = &H10
Private Const WM_CREATE = &H1
Protected Overrides Sub DefWndProc(ByRef m As System.Windows.Forms.Message)
Select Case m.Msg
Case WM_CLOSE
MessageBox.Show("WM_CLOSE")
Case WM_CREATE
MessageBox.Show("WM_CREATE")
Case Else
MessageBox.Show("haha")
End Select
End Sub