Font :: preferQuality - Prefer quality property
When the property is set to true, best quality font is preferred. The font matcher will use the nearest standard point size that the font supports.
Options.GUIFramework.Fonts._std_font.prefer_quality=YES
Notes: 
Source: Qt documentation
Return value:  Enable resource ( bool  )
In order to enable the referenced resource true should be passed. Passing false will disable the resource.
Implementation overview
- Get prefer quality property
 Font :: preferQuality (  )
- Chzange prefer quality settings
 Font :: preferQuality ( bEnable )

