SerializedProperty.hasMultipleDifferentValues

Description

Does this property represent multiple different values due to multi-object editing? (Read Only)

Returns true when there are multiple target objects, and they do not all have the same value. Additional resources: SerializedObject.targetObjects, SerializedObject.SetIsDifferentCacheDirty.

using UnityEngine;
using UnityEditor;

public class SerializePropertyHasMultipleDifferentValuesExample : ScriptableObject
{
    public int m_Matching;
    public int m_Different;

    [MenuItem("Example/SerializedProperty hasMultipleDifferentValues Example")]
    static void HasMultipleDifferentValuesExample()
    {
        var instance1 = ScriptableObject.CreateInstance<SerializePropertyHasMultipleDifferentValuesExample>();
        instance1.m_Matching = 1;
        instance1.m_Different = 1;

        var instance2 = ScriptableObject.CreateInstance<SerializePropertyHasMultipleDifferentValuesExample>();
        instance2.m_Matching = 1;
        instance2.m_Different = 2;

        using (var serializedObject = new SerializedObject(new ScriptableObject[] { instance1, instance2 }))
        {
            var matchingProperty = serializedObject.FindProperty("m_Matching");
            var differentProperty = serializedObject.FindProperty("m_Different");

            // Outputs
            //m_Matching  value: 1, matching: True
            //m_Different value: 1, matching: False
            Debug.Log($"m_Matching  value: {matchingProperty.intValue}, matching: {!matchingProperty.hasMultipleDifferentValues}\n" +
                $"m_Different value: {differentProperty.intValue}, matching: {!differentProperty.hasMultipleDifferentValues}");
        }
    }
}