How to handle WM_SHOWWINDOW in a base class

[DeepT]

You mean this?
Base Class:

BEGIN_MESSAGE_MAP(CBubbleBaseDlg, CDialog)
	ON_WM_TIMER()
	ON_WM_SHOWWINDOW()
END_MESSAGE_MAP()

Subclass:

BEGIN_MESSAGE_MAP(CVista7BubbleDlg, CDialog)
	ON_BN_CLICKED(IDC_BUTTON_BUBBLE, &CVista7BubbleDlg::OnBnClickedButtonBubble)
	ON_WM_SHOWWINDOW()
	ON_WM_TIMER()
END_MESSAGE_MAP()

Originally I didn't want to have the last two messages in the sub class. Now that I posted it, is the fact that I have CDialog in the subclass message map the problem? If it was CBubbleBaseDlg, and I didn't have the ON_WM ShowWindow / timer then it would have worked?