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Retrieves the setting for the current aspect-ratio filter.

CSize GetAspectRatioFilter( ) const;

A CSize object representing the aspect ratio used by the current aspect ratio filter.

The aspect ratio is the ratio formed by a device's pixel width and height. Information about a device's aspect ratio is used in the creation, selection, and display of fonts. Windows provides a special filter, the aspect-ratio filter, to select fonts designed for a particular aspect ratio from all of the available fonts. The filter uses the aspect ratio specified by the SetMapperFlags member function.