TCN_SELCHANGE (Windows CE 5.0)
This message notifies a tab control's parent window that the currently selected tab has changed. It is sent in the form of a WM_NOTIFY message.
TCN_SELCHANGE lpnmhdr = (LPNMHDR) lParam;
Long pointer to an NMHDR structure. The hwndFrom member is the handle to the tab control. The idFrom member is the child window identifier of the tab control. The code member is TCN_SELCHANGE.
To determine the currently selected tab, use the TabCtrl_GetCurSel macro.
OS Versions: Windows CE 1.0 and later.
TabCtrl_GetCurSel | WM_NOTIFY | NMHDR
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