diff --git a/MapPresent/MapPresent.cpp b/MapPresent/MapPresent.cpp
index 93cb9a6..721d3d4 100644
--- a/MapPresent/MapPresent.cpp
+++ b/MapPresent/MapPresent.cpp
@@ -204,3 +204,7 @@ bool PresentIndex::isValid() const
 {
 	return row != INT_MAX && col != INT_MAX;
 }
+
+UnitPresentDelegate::UnitPresentDelegate(QObject* parent /*= nullptr*/)
+	:QObject(parent) {
+}
diff --git a/MapPresent/MapPresent.h b/MapPresent/MapPresent.h
index 5a47759..1968ed1 100644
--- a/MapPresent/MapPresent.h
+++ b/MapPresent/MapPresent.h
@@ -42,9 +42,12 @@ struct PresentOption {
 /// <summary>
 /// 单元绘制委托
 /// </summary>
-class UnitPresentDelegate {
+class UnitPresentDelegate : public QObject {
+	Q_OBJECT
 public:
+	UnitPresentDelegate(QObject* parent = nullptr);
 	virtual ~UnitPresentDelegate() = default;
+
 	/// <summary>
 	/// 匹配单元类型
 	/// </summary>
@@ -56,6 +59,12 @@ public:
 	/// <param name="p"></param>
 	/// <param name="option"></param>
 	virtual void paint(QPainter* p, const PresentOption& option) = 0;
+
+signals:
+	/// <summary>
+	/// 更新通知/重绘请求
+	/// </summary>
+	void updateRequest();
 };
 
 /// <summary>
@@ -106,7 +115,7 @@ public:
 signals:
 	void mouseIn();
 	void mouseOut();
-	void mouseHover(const PresentIndex &unit_index);
+	void mouseHover(const PresentIndex& unit_index);
 
 protected:
 	void paintEvent(QPaintEvent* ev) override;