Preview Field Attribute特性：用于绘制一个方形ObjectField，它呈现UnityEngine.Object类型的预览。此对象字段还添加了对拖放的支持，将对象拖动到另一个方形对象字段，交换值。如果在放开时按住控制它将替换值，并且您可以Ctr+单击对象字段以快速删除它保存的值。
using Sirenix.OdinInspector;
using UnityEngine;
using UnityEngine.UI;
public class PreviewFieldAttributeExample : MonoBehaviour
{
[VerticalGroup("row1/left")]
public string A, B, C;
[HideLabel]
[PreviewField(50, ObjectFieldAlignment.Right)]
[HorizontalGroup("row1", 50), VerticalGroup("row1/right")]
public Object D;
[HideLabel]
[PreviewField(50, ObjectFieldAlignment.Left)]
[HorizontalGroup("row2", 50), VerticalGroup("row2/left")]
public Object E;
[VerticalGroup("row2/right"), LabelWidth(-54)]
public string F, G, H;
[InfoBox(
"还可以有选择地全局启用和定制这些对象字段" +
"在 the Odin preferences window.\n\n" +
" - 长安 Ctrl + 点击 = 删除\n" +
" - 拖拽 = 移动或替换.\n" +
" - Ctrl + Drag = 替换.\n" +
" - Ctrl + drag and drop = Move and override.")]
[PropertyOrder(-1)]
[Button(ButtonSizes.Large)]
private void ConfigureGlobalPreviewFieldSettings()
{
Sirenix.OdinInspector.Editor.GeneralDrawerConfig.Instance.OpenInEditor();
}
}