diff --git a/Canvas.cpp b/Canvas.cpp
index 757db3d..ad3f911 100644
--- a/Canvas.cpp
+++ b/Canvas.cpp
@@ -72,7 +72,7 @@ void Canvas::draw()
 		// 如果位置或尺寸变了，或没有有效缓存，则重新抓取
 		if (!saveBkImage || saveBkX != this->x - margin || saveBkY != this->y - margin || saveWidth != this->width + margin * 2 || saveHeight != this->height + margin * 2)
 		{
-			discardBackground();
+			invalidateBackgroundSnapshot();
 			saveBackground(this->x - margin, this->y - margin, this->width + margin * 2, this->height + margin * 2);
 		}
 	}
@@ -231,7 +231,7 @@ void Canvas::setIsVisible(bool visible)
 		control->setIsVisible(visible);
 	}
 	if (!visible)
-		this->updateBackground();
+		discardBackground();
 }
 
 void Canvas::setDirty(bool dirty)
diff --git a/Control.cpp b/Control.cpp
index e4fa405..0d28093 100644
--- a/Control.cpp
+++ b/Control.cpp
@@ -58,7 +58,7 @@ void Control::setIsVisible(bool show)
 	if (!show)
 	{
 		// 隐藏：擦除自己在屏幕上的内容，并释放快照
-		this->updateBackground();
+		discardBackground();
 		return;
 	}
 
@@ -74,7 +74,7 @@ void Control::onWindowResize()
 		<< SX_T(" -> 丢背景快照 + 标脏", " -> discardSnap + dirty");
 
 	// 自己：丢快照 + 标脏
-	discardBackground();
+	invalidateBackgroundSnapshot();
 	setDirty(true);
 }
 void Control::setLayoutMode(StellarX::LayoutMode layoutMode_)
@@ -200,8 +200,16 @@ void Control::discardBackground()
 	hasSnap = false; saveWidth = saveHeight = 0;
 }
 
-void Control::updateBackground()
+void Control::invalidateBackgroundSnapshot()
 {
-	restBackground();
-	discardBackground();
+	if (saveBkImage)
+	{
+		SX_LOGD("Snap") << SX_T("作废背景快照：id=", "invalidateBackgroundSnapshot: id=") << id
+			<< " hasSnap=" << (hasSnap ? 1 : 0);
+		saveBkImage.reset();
+	}
+	hasSnap = false;
+	saveBkX = saveBkY = 0;
+	saveWidth = saveHeight = 0;
 }
+
diff --git a/Control.h b/Control.h
index f40aaab..c0a8f1e 100644
--- a/Control.h
+++ b/Control.h
@@ -86,12 +86,12 @@ protected:
 	virtual void saveBackground(int x, int y, int w, int h);
 	// putimage 回屏
 	virtual void restBackground();
-	// 释放快照（窗口重绘/尺寸变化后必须作废）
+	// 回贴旧背景并释放快照
 	void discardBackground();
 public:
-	//释放快照重新保存，在尺寸变化时更新背景快照避免尺寸变化导致显示错位
-	void updateBackground();
-	//窗口变化丢快照
+	// 仅作废快照，不回贴旧背景
+	void invalidateBackgroundSnapshot();
+	//“纯作废快照 + 标脏”，不再在 resize 路径里回贴旧背景
 	virtual void onWindowResize();
 	// 获取位置和尺寸
 	int getX() const { return x; }
diff --git a/Dialog.cpp b/Dialog.cpp
index 050de99..80049f4 100644
--- a/Dialog.cpp
+++ b/Dialog.cpp
@@ -247,6 +247,8 @@ void Dialog::setInitialization(bool init)
 {
 	if (init)
 	{
+		// 窗口缩放后的重建不能再回贴旧快照；父窗口接下来会做一次完整重绘。
+		invalidateBackgroundSnapshot();
 		invalidateLayout(true);
 	}
 	else
@@ -659,7 +661,7 @@ void Dialog::performDelayedCleanup()
 	{
 		restBackground();
 		FlushBatchDraw();
-		discardBackground();
+		invalidateBackgroundSnapshot();
 	}
 	if (!(saveBkImage && hasSnap))
 	{
@@ -701,6 +703,9 @@ std::string Dialog::GetText() const
 
 void Dialog::clearControls()
 {
+	for (auto& control : controls)
+		control->invalidateBackgroundSnapshot();
+
 	controls.clear();
 	// 重置按钮指针
 	closeButton = nullptr;
diff --git a/Label.cpp b/Label.cpp
index 73012e7..9e861a9 100644
--- a/Label.cpp
+++ b/Label.cpp
@@ -56,8 +56,7 @@ void Label::draw()
 //用于“隐藏提示框”时调用（还原并释放快照）
 void Label::hide()
 {
-	restBackground();    // 还原屏幕像素
-	discardBackground(); // 作废快照，防止错贴旧图
+	discardBackground(); // 还原并释放快照
 	dirty = false;
 }
 void Label::setTextdisap(bool key)
diff --git a/Table.cpp b/Table.cpp
index 7d81a2b..5828605 100644
--- a/Table.cpp
+++ b/Table.cpp
@@ -423,7 +423,7 @@ void Table::draw()
 			// 当尺寸变化或缓存图像无效时，需要重新截图
 			if (!saveBkImage || saveWidth != this->width || saveHeight != this->height)
 			{
-				discardBackground();
+				invalidateBackgroundSnapshot();
 				saveBackground(this->x, this->y, this->width, this->height);
 			}
 		}
diff --git a/Window.cpp b/Window.cpp
index aaa9ee1..1612d76 100644
--- a/Window.cpp
+++ b/Window.cpp
@@ -273,7 +273,7 @@ void Window::draw()
 	{
 		hWnd = initgraph(width, height, windowMode);
 	}
-
+	
 	// 子类化：让我们的 WndProcThunk 接管窗口消息（仅执行一次）
 	if (!procHooked)
 	{
@@ -779,7 +779,6 @@ void Window::pumpResizeIfNeeded()
 	for (auto& c : controls)
 	{
 		adaptiveLayout(c, finalH, finalW);
-		c->onWindowResize();
 	}
 	for (auto& d : dialogs)
 		if (auto* dd = dynamic_cast<Dialog*>(d.get()))
diff --git a/z-testDome.cpp b/z-testDome.cpp
index 7bdd2b7..8ba9909 100644
--- a/z-testDome.cpp
+++ b/z-testDome.cpp
@@ -1,6 +1,6 @@
 // 本工具基于 StellarX 构建，轻量级的 Windows GUI 框架。
 #include"StellarX.h"
-#define KEY 1
+#define KEY 2
 
 #if 1 == KEY
 int main()
@@ -560,6 +560,8 @@ int main()
 	configuration->addControl(std::move(signedToggle));
 	configuration->addControl(std::move(configurationLabel));
 
+	selectionArea->setAnchor(StellarX::Anchor::Right, StellarX::Anchor::Left);
+	selectionArea->setLayoutMode(StellarX::LayoutMode::AnchorToEdges);
 	mainWindow.addControl(std::move(selectionArea));
 	mainWindow.addControl(std::move(function));
 	mainWindow.addControl(std::move(NumericalDisplayArea));
@@ -580,7 +582,7 @@ int main()
 {
 	StellarX::SxLogger::setGBK();
 	StellarX::SxLogger::Get().enableConsole(true);
-	StellarX::SxLogger::Get().setMinLevel(StellarX::SxLogLevel::Trace);   // Info/Debug/Trace 自己切
+	StellarX::SxLogger::Get().setMinLevel(StellarX::SxLogLevel::Debug);   // Info/Debug/Trace 自己切
 	StellarX::SxLogger::Get().setLanguage(StellarX::SxLogLanguage::ZhCN); // ZhCN / EnUS
 
 	Window win(1300, 800, 1, RGB(255, 255, 0), "记账管理系统");
@@ -691,7 +693,7 @@ int main()
 				if ("\0" == logIn_textBox_ptr[0]->getText())logIn_textBox_ptr[0]->setTextBoxBk(RGB(255, 0, 0));
 				if ("\0" == logIn_textBox_ptr[1]->getText())logIn_textBox_ptr[1]->setTextBoxBk(RGB(255, 0, 0));
 				std::cout << "\a";
-				StellarX::MessageBox::showAsync(win, "账号或密码不能为空！", "提示");
+				StellarX::MessageBox::showModal(win, "账号或密码不能为空！", "提示");
 			}
 			else
 			{