CMFCTabCtrl::IsActiveTabCloseButton
Indicates whether the Close button (X) is displayed on an active tab or on the upper-right corner of the tab area.
virtual BOOL IsActiveTabCloseButton() const;
Return Value
TRUE if the Close button is displayed on the active tab; FALSE if the Close button is displayed on the upper-right corner of the tab area.
Requirements
Header: afxtabctrl.h