diff --git a/core/Base/Window.cpp b/core/Base/Window.cpp
index 3d3f89fd..b74fc247 100644
--- a/core/Base/Window.cpp
+++ b/core/Base/Window.cpp
@@ -109,7 +109,7 @@ bool e2d::Window::__init(const String & sTitle, UINT32 nWidth, UINT32 nHeight, L
 bool e2d::Window::__initMutex(const String & sTitle)
 {
 	// 创建进程互斥体
-	HANDLE m_hMutex = ::CreateMutex(NULL, TRUE, sTitle);
+	HANDLE m_hMutex = ::CreateMutex(NULL, TRUE, L"Easy2DApp-" + sTitle);
 
 	if (m_hMutex == nullptr)
 	{
diff --git a/core/Common/Scene.cpp b/core/Common/Scene.cpp
index ed9a32b3..aea79382 100644
--- a/core/Common/Scene.cpp
+++ b/core/Common/Scene.cpp
@@ -15,8 +15,6 @@ e2d::Scene::Scene()
 	m_pRoot->retain();
 	m_pRoot->_onEnter();
 	m_pRoot->_setParentScene(this);
-	m_pRoot->setPivot(0, 0);
-	m_pRoot->_setSize(Window::getWidth(), Window::getHeight());
 }
 
 e2d::Scene::~Scene()
diff --git a/core/Common/String.cpp b/core/Common/String.cpp
index 05e58a05..76d0c8aa 100644
--- a/core/Common/String.cpp
+++ b/core/Common/String.cpp
@@ -282,11 +282,6 @@ e2d::String::operator const char*() const
 	return ::ConvertWide2Ansi(m_str.c_str()).c_str();
 }
 
-e2d::String::operator bool() const
-{
-	return getLength() != 0;
-}
-
 bool e2d::String::isEmpty() const
 {
 	return m_str.empty();
diff --git a/core/Node/Button.cpp b/core/Node/Button.cpp
index 5d29b8e8..b94257b5 100644
--- a/core/Node/Button.cpp
+++ b/core/Node/Button.cpp
@@ -96,7 +96,7 @@ void e2d::Button::setNormal(Node * normal)
 		if (normal)
 		{
 			this->addChild(normal);
-			this->_setSize(normal->getWidth(), normal->getHeight());
+			this->setSize(normal->getWidth(), normal->getHeight());
 		}
 		m_pNormal = normal;
 
diff --git a/core/Node/ButtonToggle.cpp b/core/Node/ButtonToggle.cpp
index 973e72cb..5c2c2ca9 100644
--- a/core/Node/ButtonToggle.cpp
+++ b/core/Node/ButtonToggle.cpp
@@ -122,7 +122,7 @@ void e2d::ButtonToggle::setNormal(Node * normal)
 		if (normal)
 		{
 			this->addChild(normal);
-			this->_setSize(normal->getWidth(), normal->getHeight());
+			this->setSize(normal->getWidth(), normal->getHeight());
 		}
 		m_pNormalOn = normal;
 
diff --git a/core/Node/Node.cpp b/core/Node/Node.cpp
index 53732b20..e8234748 100644
--- a/core/Node/Node.cpp
+++ b/core/Node/Node.cpp
@@ -431,16 +431,6 @@ void e2d::Node::movePos(const Vector & v)
 	this->movePos(v.x, v.y);
 }
 
-void e2d::Node::_setSize(double width, double height)
-{
-	if (m_fWidth == width && m_fHeight == height)
-		return;
-
-	m_fWidth = static_cast<float>(width);
-	m_fHeight = static_cast<float>(height);
-	m_bTransformNeeded = true;
-}
-
 void e2d::Node::setScaleX(double scaleX)
 {
 	this->setScale(scaleX, m_fScaleY);
@@ -525,6 +515,31 @@ void e2d::Node::setPivot(double pivotX, double pivotY)
 	m_bTransformNeeded = true;
 }
 
+void e2d::Node::setWidth(double width)
+{
+	this->setSize(width, m_fHeight);
+}
+
+void e2d::Node::setHeight(double height)
+{
+	this->setSize(m_fWidth, height);
+}
+
+void e2d::Node::setSize(double width, double height)
+{
+	if (m_fWidth == width && m_fHeight == height)
+		return;
+
+	m_fWidth = static_cast<float>(width);
+	m_fHeight = static_cast<float>(height);
+	m_bTransformNeeded = true;
+}
+
+void e2d::Node::setSize(Size size)
+{
+	this->setSize(size.width, size.height);
+}
+
 void e2d::Node::setShape(Shape * pShape)
 {
 	// 删除旧的形状
diff --git a/core/Node/Sprite.cpp b/core/Node/Sprite.cpp
index 8a8c999e..90ba8e08 100644
--- a/core/Node/Sprite.cpp
+++ b/core/Node/Sprite.cpp
@@ -38,7 +38,7 @@ void e2d::Sprite::loadFrom(Image * image)
 		m_pImage = image;
 		m_pImage->retain();
 
-		Node::_setSize(m_pImage->getWidth(), m_pImage->getHeight());
+		Node::setSize(m_pImage->getWidth(), m_pImage->getHeight());
 	}
 }
 
@@ -50,7 +50,7 @@ void e2d::Sprite::loadFrom(const String & imageFileName)
 void e2d::Sprite::clip(double x, double y, double width, double height)
 {
 	m_pImage->clip(x, y, width, height);
-	Node::_setSize(
+	Node::setSize(
 		min(max(width, 0), m_pImage->getSourceWidth() - m_pImage->getClipX()),
 		min(max(height, 0), m_pImage->getSourceHeight() - m_pImage->getClipY())
 	);
diff --git a/core/Node/Text.cpp b/core/Node/Text.cpp
index 216766aa..45408ff4 100644
--- a/core/Node/Text.cpp
+++ b/core/Node/Text.cpp
@@ -120,7 +120,7 @@ void e2d::Text::_initTextLayout()
 	// 未设置字体或空字符串时，文本宽高为 0
 	if (!m_pFont || m_sText.isEmpty())
 	{
-		this->_setSize(0, 0);
+		this->setSize(0, 0);
 		m_fWordWrappingWidth = 0;
 		return;
 	}
@@ -153,7 +153,7 @@ void e2d::Text::_initTextLayout()
 	DWRITE_TEXT_METRICS metrics;
 	pDWriteTextLayout->GetMetrics(&metrics);
 
-	this->_setSize(metrics.widthIncludingTrailingWhitespace, metrics.height);
+	this->setSize(metrics.widthIncludingTrailingWhitespace, metrics.height);
 	m_fWordWrappingWidth = metrics.widthIncludingTrailingWhitespace;
 
 	// 删除相关资源
diff --git a/core/Tool/Data.cpp b/core/Tool/Data.cpp
index 4a9bc103..32b5f34e 100644
--- a/core/Tool/Data.cpp
+++ b/core/Tool/Data.cpp
@@ -13,8 +13,8 @@ void e2d::Data::saveDouble(const String & key, double value)
 
 void e2d::Data::saveBool(const String & key, bool value)
 {
-	int nValue = value ? 1 : 0;
-	::WritePrivateProfileString(L"Default", key, String::toString(nValue), File::getDefaultSavePath());
+	const wchar_t* sValue = value ? L"1" : L"0";
+	::WritePrivateProfileString(L"Default", key, sValue, File::getDefaultSavePath());
 }
 
 void e2d::Data::saveString(const String & key, const String & value)
diff --git a/core/ebase.h b/core/ebase.h
index a8601138..c3743763 100644
--- a/core/ebase.h
+++ b/core/ebase.h
@@ -17,7 +17,7 @@ public:
 		const String & sTitle,			/* 窗口标题 */
 		UINT32 nWidth,					/* 窗口宽度 */
 		UINT32 nHeight,					/* 窗口高度 */
-		LPCTSTR pIconID = L"",			/* 窗口图标 */
+		LPCTSTR pIconID = nullptr,		/* 窗口图标 */
 		const String & sAppname = L""	/* AppName */
 	);
 
diff --git a/core/ecommon.h b/core/ecommon.h
index 0344b648..aaffedbd 100644
--- a/core/ecommon.h
+++ b/core/ecommon.h
@@ -22,7 +22,7 @@ struct Point
 	Point operator * (double const & value);
 	Point operator / (double const & value);
 
-	operator Size() const;
+	operator e2d::Size() const;
 
 	/* 成员变量 */
 	double x;	// X 坐标
@@ -41,7 +41,7 @@ struct Size
 	Size operator * (double const & value);
 	Size operator / (double const & value);
 
-	operator Point() const;
+	operator e2d::Point() const;
 
 	/* 成员变量 */
 	double width;	// 宽度
@@ -168,7 +168,6 @@ public:
 
 	operator const wchar_t* () const;
 	operator wchar_t* () const;
-	operator bool () const;
 
 	friend std::wostream& operator<< (std::wostream &, String &);
 	friend std::wistream& operator>> (std::wistream &, String &);
diff --git a/core/enodes.h b/core/enodes.h
index 08a13305..518c19c5 100644
--- a/core/enodes.h
+++ b/core/enodes.h
@@ -289,6 +289,27 @@ public:
 		double pivotY
 	);
 
+	// 修改节点宽度
+	void setWidth(
+		double width
+	);
+
+	// 修改节点高度
+	void setHeight(
+		double height
+	);
+
+	// 修改节点大小
+	void setSize(
+		double width,
+		double height
+	);
+
+	// 修改节点大小
+	void setSize(
+		Size size
+	);
+
 	// 设置节点形状
 	virtual void setShape(
 		Shape * pShape
@@ -365,12 +386,6 @@ protected:
 	// 更新所有子节点透明度
 	void _updateChildrenOpacity();
 
-	// 修改节点大小
-	void _setSize(
-		double width,
-		double height
-	);
-
 	// 更新节点二维矩阵
 	static void _updateTransform(Node * node);