AFX_GLOBAL_DATA::m_bUseSystemFont
Indicates whether a system font is used for menus, toolbars, and ribbons.
BOOL m_bUseSystemFont;
Remarks
TRUE specifies to use a system font; otherwise, FALSE. The AFX_GLOBAL_DATA::AFX_GLOBAL_DATA constructor initializes this member to FALSE.
Testing this member is not the only way for the framework to determine the font to use. The AFX_GLOBAL_DATA::UpdateFonts method also tests default and alternative fonts to determine what visual styles are available to be applied to menus, toolbars, and ribbons.
Requirements
Header: afxglobals.h