| 
 | Return the outline and metrics resolutions of a given PFR face. | 
 
 | input |  | 
| face | Handle to the input face. It can be a non-PFR face. |  | 
 | output |  | 
| aoutline_resolution | Outline resolution. This is equivalent to ‘face->units_per_EM’. Optional (parameter can be NULL). |  | ametrics_resolution | Metrics resolution. This is equivalent to ‘outline_resolution’ for non-PFR fonts. Optional (parameter can be NULL). |  | ametrics_x_scale | A 16.16 fixed-point number used to scale distance expressed in metrics units to device sub-pixels. This is equivalent to ‘face->size->x_scale’, but for metrics only. Optional (parameter can be NULL) |  | ametrics_y_scale | Same as ‘ametrics_x_scale’ but for the vertical direction. optional (parameter can be NULL) |  | 
 | return |  | FreeType error code. 0 means success. | 
 | note |  | If the input face is not a PFR, this function will return an error. However, in all cases, it will return valid values. | 
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