<summary>
Obtains design units and common metrics for the font face.
These metrics are applicable to all the glyphs within a fontface and are used by applications for layout calculations.
</summary>
<param name="fontFaceMetrics">Points to a DWRITE_FONT_METRICS structure to fill in.
The metrics returned by this function are in font design units.</param>
<summary> Obtains design units and common metrics for the font face. These metrics are applicable to all the glyphs within a fontface and are used by applications for layout calculations. </summary> <param name="fontFaceMetrics">Points to a DWRITE_FONT_METRICS structure to fill in. The metrics returned by this function are in font design units.</param>