diff --git a/HPPA/HPPA.cpp b/HPPA/HPPA.cpp
index f3b5000..dc2aeb0 100644
--- a/HPPA/HPPA.cpp
+++ b/HPPA/HPPA.cpp
@@ -149,8 +149,61 @@ HPPA::HPPA(QWidget* parent)
 	graphicsView_delete->setSizePolicy(sizePolicy1);
 	graphicsView_delete->setFrameShape(QFrame::NoFrame);
 	graphicsView_delete->setFrameShadow(QFrame::Raised);
+	//gridLayout_toc->addWidget(graphicsView_delete, 0, 0, 1, 1);
+
+	QTreeWidget* treeWidget = new QTreeWidget();
+	treeWidget->setColumnCount(1);
+	treeWidget->setIndentation(18);
+	treeWidget->setRootIsDecorated(true);
+	treeWidget->header()->hide();
+	treeWidget->setStyleSheet(R"(
+		QTreeWidget
+		{
+			color: #ACCDFF;
+		}
+		QTreeWidget::branch {
+			background: transparent;
+		}
+
+		QTreeWidget::branch:has-children:!has-siblings:closed,
+		QTreeWidget::branch:closed:has-children:has-siblings
+		{
+			border-image: none;
+			image: url(D:/cpp_project_vs2022/HPPA/x64/Debug/3DModel/tree_tri_right.svg);
+		}
+		QTreeWidget::branch:open:has-children:!has-siblings,
+		QTreeWidget::branch:open:has-children:has-siblings
+		{
+			border-image: none;
+			image: url(D:/cpp_project_vs2022/HPPA/x64/Debug/3DModel/tree_tri_down.svg);
+		}
+
+
+
+	)");
+
+	//QList<QTreeWidgetItem*> items;
+	//for (int i = 0; i < 3; ++i)
+	//	items.append(new QTreeWidgetItem((QTreeWidget*)0, QStringList(QString("tmp_image_%1").arg(i))));
+	//treeWidget->insertTopLevelItems(0, items);
+
+	QTreeWidgetItem* group1 = new QTreeWidgetItem(treeWidget);
+	group1->setText(0, "Raster");
+	group1->setExpanded(true);   // 默认展开
+
+	QTreeWidgetItem* group2 = new QTreeWidgetItem(treeWidget);
+	group2->setText(0, "Vector");
+	group2->setExpanded(true);
+
+	QTreeWidgetItem* layerA = new QTreeWidgetItem(group1);
+	layerA->setText(0, "tmp_image_1");
+
+	QTreeWidgetItem* layerB = new QTreeWidgetItem(group1);
+	layerB->setText(0, "tmp_image_2");
+
+	gridLayout_toc->addWidget(treeWidget, 0, 0, 1, 1);
+
 
-	gridLayout_toc->addWidget(graphicsView_delete, 0, 0, 1, 1);
 	dock_layers->setWidget(dock_layersWidgetContents);
 	dock_layersWidgetContents->setStyleSheet(qss_DockWidget_contentWidget);