A value which represents a linear graphical quantity.
dpi
The resolution, expressed in dots per inch.
unit
A UnitOfMeasurement constant which defines the unit of measure in which the value is expressed.
Requirements
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2