## Presentation Device Driver Reference for OS/2

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### GreGetPairKerningTable - Remarks

The handling routine must transform all kerning-pair coordinates from device to world coordinates before sending the data to the calling routine. This can be done by using GreConvert. If it is unable to do this because the transform matrix is singular, it must log PMERR_COORDINATE_OVERFLOW.

The number of kerning pairs is a field in the FONTMETRICS structure.