How to catch the "tab changed" event in a property sheet

How to catch and handle the notification about that the currently selected tab has changed in the class derived from CPropertySheetImpll? I added TCN_SELCHANGE handler to message map but a peoperty sheet has never recieved this not开发者_JS百科ification. I use wtl and write in c++.

Property sheet sends PSN_SETACTIVE and PSN_KILLACTIVE to notify on changed pages (valid for both regular and wizard property pages).