ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Framework Namespace / FrameworkApplication Class / ScaleFactor Property
Version

ScaleFactor Property (FrameworkApplication)
Get or sets the current user interface scaling factor.
Syntax
public static double ScaleFactor {get; set;}
Remarks
A valid value is between 1.0 and 2.0, the default is 1.0. Restart the program for your scale changes to take effect.
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also