CMFCTabCtrl::IsActiveInMDITabGroup
Indicates whether the current tab of a tab control is the active tab in a multiple document interface tab group.
BOOL IsActiveInMDITabGroup() const;
Return Value
TRUE if the current tab of a tab control is the active tab in an MDI tab group; otherwise, FALSE.
Remarks
You can organize multiple document windows into either vertical or horizontal tab groups and easily shuffle documents from one tab group to another.
Requirements
Header: afxtabctrl.h