CMDITabInfo::m_bActiveTabCloseButton;
Specifies whether a Close button is displayed on the label of the active tab.
BOOL m_bActiveTabCloseButton;
Remarks
If TRUE, the label of the active tab will display a Close button. The Close button will be removed from the right top corner of the tab area. Otherwise, the label of the active tab will not display a Close button. The Close button will appear in the right top corner of the tab area.
Requirements
Header: afxmdiclientareawnd.h