ArcGIS Pro 3.2 API Reference Guide
ArcGIS.Core.CIM Namespace / CIMMaplexLabelPlacementProperties Class / MaximumCharacterSpacing Property
Example

In This Topic
    MaximumCharacterSpacing Property
    In This Topic
    Gets or sets the maximum character spacing. Character spacing may be increased up to this limit.
    Syntax
    public double MaximumCharacterSpacing {get; set;}
    Public Property MaximumCharacterSpacing As Double
    Example
    Spread labels across Polygon geometry
    //Note: call within QueuedTask.Run()
    
    //Get the layer's definition
    var lyrDefn = featureLayer.GetDefinition() as CIMFeatureLayer;
    //Get the label classes - we need the first one
    var listLabelClasses = lyrDefn.LabelClasses.ToList();
    var theLabelClass = listLabelClasses.FirstOrDefault();
    //Spread Labels (words and characters to fill feature)
    // Spread words to fill feature
    theLabelClass.MaplexLabelPlacementProperties.SpreadWords = true;
    //Spread Characters to a fixed limit of 50%
    theLabelClass.MaplexLabelPlacementProperties.SpreadCharacters = true;
    theLabelClass.MaplexLabelPlacementProperties.MaximumCharacterSpacing = 50.0;
    lyrDefn.LabelClasses = listLabelClasses.ToArray(); //Set the labelClasses back
    featureLayer.SetDefinition(lyrDefn); //set the layer's definition
    Requirements

    Target Platforms: Windows 11, Windows 10

    ArcGIS Pro version: 3 or higher.
    See Also