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Hello.

I want to widen the expression width of the MDI tab.

Here is the class that increases the height of the MDI tab strip by 20 pixels:

class CMyTabMdiOneNoteWnd : public CExtTabMdiOneNoteWnd
{
public:
            virtual INT OnTabWndGetParentSizingMargin(
                        DWORD dwOrientation
                        ) const
            {
                        INT nMargin = CExtTabMdiOneNoteWnd::OnTabWndGetParentSizingMargin( dwOrientation );
                        return ( nMargin + 20 );
            }
            virtual void OnTabWndMeasureItemAreaMargins(
                        LONG & nSpaceBefore,
                        LONG & nSpaceAfter,
                        LONG & nSpaceOver
                        )
            {
                        ASSERT_VALID( this );
                        CExtTabMdiOneNoteWnd::OnTabWndMeasureItemAreaMargins(
                                    nSpaceBefore,
                                    nSpaceAfter,
                                    nSpaceOver
                                    );
                        nSpaceOver += 20;
            }
};