diff --git a/Demo/main.cpp b/Demo/main.cpp
index e88e2fdf..05e86578 100644
--- a/Demo/main.cpp
+++ b/Demo/main.cpp
@@ -1,5 +1,5 @@
 #include "..\Easy2D\easy2d.h"
-
+#include <iostream>
 
 int WINAPI WinMain(
 	HINSTANCE hInstance,
@@ -8,69 +8,109 @@ int WINAPI WinMain(
 	int nCmdShow
 )
 {
-	if (!EApp::init(L"Easy2D Demo", 640, 480))
+	if (!EApp::init(L"Demo", 250, 150))
 		return -1;
 
+	EString str;
+	str += L"123";
+	str += L"4";
+	UINT h1 = str.hash();
+
+	EString s = L"abcdea";
+	EString ss = s.sub(0);
+	EString sss = s.sub(0, 5);
+	EString ssss = s.sub(0, 9);
+	EString ssssss = s.sub(1, 4);
+	EString sssss = s.sub(-1, 3);
+	int i = s.findFirstOf(L'a');
+	int j = s.findLastOf(L'a');
+
+	EString string = L"Hello";
+	string = string + 2017 + L"!";
+
+	EString str2;
+	str2 += 1;
+	str2 += 2L;
+	str2 += 2.3;
+	str2 += 4.6f;
+	UINT h2 = str2.hash();
+
+	str2 += std::wstring(L"sdf");
+	EString str3;
+	str3 += str2 + str;
+	UINT h3 = str3.hash();
+
 	auto scene = new EScene();
-	scene->retain();
+	EApp::enterScene(scene);
 
-	auto text = new EText(L"中文测试中文测试中文测试中文测试中文测试中文测试中文测试", L"楷体");
-	text->setPos(EApp::getWidth() / 2, EApp::getHeight() / 2);
-	//text->setWordWrapping(true);
-	//text->setWordWrappingWidth(130);
-	text->setRotation(40);
-	text->runAction(new EActionLoop(new EActionTwo(new EActionFadeOut(1), new EActionFadeIn(1))));
-	scene->add(text);
+	for (int i = 0; i < 25; i++)
+	{
+		auto sprite = new ESprite(L"test.png");
+		sprite->setScale(0.5f);
+		sprite->setPos(ERandom::between(0, EApp::getWidth()), ERandom::between(0, EApp::getHeight()));
+		scene->add(sprite);
+	}
 
-	auto listener = new EListenerKeyboardPress([=]() {
-		if (EKeyboardMsg::getKeyValue() == EKeyboardMsg::KEY::SPACE)
-		{
-			EApp::backScene(new ETransitionMove(0.5f, ETransitionMove::DOWN));
-		}
-	});
-	listener->bindWith(scene);
+	//auto scene = new EScene();
+	//scene->retain();
 
-	auto scene2 = new EScene();
+	//auto text = new EText(L"中文测试中文测试中文测试中文测试中文测试中文测试中文测试", L"楷体");
+	//text->setPos(EApp::getWidth() / 2, EApp::getHeight() / 2);
+	////text->setWordWrapping(true);
+	////text->setWordWrappingWidth(130);
+	//text->setRotation(40);
+	//text->runAction(new EActionLoop(new EActionTwo(new EActionFadeOut(1), new EActionFadeIn(1))));
+	//scene->add(text);
 
-	auto bird = new ESprite(L"atlas.png", 5, 982, 34, 24);
-	auto animation = new EAnimation();
-	animation->addFrame(new ESpriteFrame(L"atlas.png", 5, 982, 34, 24));
-	animation->addFrame(new ESpriteFrame(L"atlas.png", 61, 982, 34, 24));
-	animation->addFrame(new ESpriteFrame(L"atlas.png", 117, 982, 34, 24));
-	animation->addFrame(new ESpriteFrame(L"atlas.png", 61, 982, 34, 24));
-	bird->runAction(new EActionLoop(animation));
-	bird->setPivot(0.5f, 0.5f);
-	bird->setPos(EApp::getWidth() / 2, EApp::getHeight() / 2);
-	scene2->add(bird);
+	//auto listener = new EListenerKeyboardPress([=]() {
+	//	if (EKeyboardMsg::getKeyValue() == EKeyboardMsg::KEY::SPACE)
+	//	{
+	//		EApp::backScene(new ETransitionMove(0.5f, ETransitionMove::DOWN));
+	//	}
+	//});
+	//listener->bindWith(scene);
 
-	auto btnStart = new ESprite(L"atlas.png", 702, 234, 116, 70);
-	auto btnStartSelected = new ESprite(L"atlas.png", 702, 234, 116, 70);
-	btnStartSelected->setPosY(5);
-	auto button = new EButton(btnStart, btnStartSelected, [=] {
-		/*if (EApp::isPaused())
-		{
-			EApp::resume();
-		}
-		else
-		{
-			EApp::pause();
-		}*/
-		EApp::enterScene(scene, new ETransitionMove(1, ETransitionMove::RIGHT));
-	});
-	button->setPivot(0.5f, 0.5f);
-	button->setPos(EApp::getWidth() / 2, EApp::getHeight() / 2 + 100);
-	scene2->add(button);
+	//auto scene2 = new EScene();
 
-	EMusicUtils::playMusic(L"music.wav", -1);
+	//auto bird = new ESprite(L"atlas.png", 5, 982, 34, 24);
+	//auto animation = new EAnimation();
+	//animation->addFrame(new ESpriteFrame(L"atlas.png", 5, 982, 34, 24));
+	//animation->addFrame(new ESpriteFrame(L"atlas.png", 61, 982, 34, 24));
+	//animation->addFrame(new ESpriteFrame(L"atlas.png", 117, 982, 34, 24));
+	//animation->addFrame(new ESpriteFrame(L"atlas.png", 61, 982, 34, 24));
+	//bird->runAction(new EActionLoop(animation));
+	//bird->setPivot(0.5f, 0.5f);
+	//bird->setPos(EApp::getWidth() / 2, EApp::getHeight() / 2);
+	//scene2->add(bird);
 
-	/*scene2->runAction(new EActionSequence(5,
-		new EActionCallback([]() { EMusicUtils::playMusic(L"music.wav", -1); }),
-		new EActionDelay(3),
-		new EActionCallback([]() { EMusicUtils::pauseMusic(L"music.wav"); }),
-		new EActionDelay(10),
-		new EActionCallback([]() { EMusicUtils::resumeMusic(L"music.wav"); })));*/
+	//auto btnStart = new ESprite(L"atlas.png", 702, 234, 116, 70);
+	//auto btnStartSelected = new ESprite(L"atlas.png", 702, 234, 116, 70);
+	//btnStartSelected->setPosY(5);
+	//auto button = new EButton(btnStart, btnStartSelected, [=] {
+	//	/*if (EApp::isPaused())
+	//	{
+	//		EApp::resume();
+	//	}
+	//	else
+	//	{
+	//		EApp::pause();
+	//	}*/
+	//	EApp::enterScene(scene, new ETransitionMove(1, ETransitionMove::RIGHT));
+	//});
+	//button->setPivot(0.5f, 0.5f);
+	//button->setPos(EApp::getWidth() / 2, EApp::getHeight() / 2 + 100);
+	//scene2->add(button);
 
-	EApp::enterScene(scene2, new ETransitionMove(1, ETransitionMove::UP));
+	//EMusicUtils::playMusic(L"music.wav", -1);
+
+	///*scene2->runAction(new EActionSequence(5,
+	//	new EActionCallback([]() { EMusicUtils::playMusic(L"music.wav", -1); }),
+	//	new EActionDelay(3),
+	//	new EActionCallback([]() { EMusicUtils::pauseMusic(L"music.wav"); }),
+	//	new EActionDelay(10),
+	//	new EActionCallback([]() { EMusicUtils::resumeMusic(L"music.wav"); })));*/
+
+	//EApp::enterScene(scene2, new ETransitionMove(1, ETransitionMove::UP));
 
 	return EApp::run();
 }
diff --git a/Demo/test.png b/Demo/test.png
index 23b60462..a9ddbade 100644
Binary files a/Demo/test.png and b/Demo/test.png differ
diff --git a/Demo/test2.png b/Demo/test2.png
new file mode 100644
index 00000000..23b60462
Binary files /dev/null and b/Demo/test2.png differ
diff --git a/Easy2D/Action/EActionMoveBy.cpp b/Easy2D/Action/EActionMoveBy.cpp
index 1c4dfc27..75847083 100644
--- a/Easy2D/Action/EActionMoveBy.cpp
+++ b/Easy2D/Action/EActionMoveBy.cpp
@@ -4,7 +4,7 @@
 e2d::EActionMoveBy::EActionMoveBy(float duration, EVec vector) :
 	EActionGradual(duration)
 {
-	m_MoveVector = vector;
+	m_MoveVec = vector;
 }
 
 void e2d::EActionMoveBy::_init()
@@ -30,8 +30,8 @@ void e2d::EActionMoveBy::_update()
 	{
 		// 移动节点
 		m_pTarget->setPos(
-			m_BeginPos.x + m_MoveVector.x * m_fRateOfProgress,
-			m_BeginPos.y + m_MoveVector.y * m_fRateOfProgress
+			m_BeginPos.x + m_MoveVec.x * m_fRateOfProgress,
+			m_BeginPos.y + m_MoveVec.y * m_fRateOfProgress
 		);
 		// 判断动作是否结束
 		if (_isEnd())
@@ -49,10 +49,10 @@ void e2d::EActionMoveBy::_reset()
 
 e2d::EActionMoveBy * e2d::EActionMoveBy::clone() const
 {
-	return new EActionMoveBy(m_fTotalDuration / 1000, m_MoveVector);
+	return new EActionMoveBy(m_fTotalDuration / 1000, m_MoveVec);
 }
 
 e2d::EActionMoveBy * e2d::EActionMoveBy::reverse() const
 {
-	return new EActionMoveBy(m_fTotalDuration / 1000, EVec(-m_MoveVector.x, -m_MoveVector.y));
+	return new EActionMoveBy(m_fTotalDuration / 1000, EVec(-m_MoveVec.x, -m_MoveVec.y));
 }
\ No newline at end of file
diff --git a/Easy2D/Action/EActionMoveTo.cpp b/Easy2D/Action/EActionMoveTo.cpp
index 08a025e8..d9d1a723 100644
--- a/Easy2D/Action/EActionMoveTo.cpp
+++ b/Easy2D/Action/EActionMoveTo.cpp
@@ -14,7 +14,7 @@ e2d::EActionMoveTo * e2d::EActionMoveTo::clone() const
 void e2d::EActionMoveTo::_init()
 {
 	EActionMoveBy::_init();
-	m_MoveVector = m_EndPos - m_BeginPos;
+	m_MoveVec = m_EndPos - m_BeginPos;
 }
 
 void e2d::EActionMoveTo::_reset()
diff --git a/Easy2D/Base/EApp.cpp b/Easy2D/Base/EApp.cpp
index ef2d431e..3c64439b 100644
--- a/Easy2D/Base/EApp.cpp
+++ b/Easy2D/Base/EApp.cpp
@@ -121,7 +121,7 @@ bool e2d::EApp::init(const EString &title, UINT32 width, UINT32 height, const EW
 	// 创建窗口
 	GetHWnd() = CreateWindow(
 		L"Easy2DApp",
-		title.c_str(),
+		title,
 		dwStyle,
 		0, 0, width, height,
 		NULL,
@@ -420,7 +420,7 @@ void e2d::EApp::setWindowSize(UINT32 width, UINT32 height)
 void e2d::EApp::setWindowTitle(const EString &title)
 {
 	// 设置窗口标题
-	SetWindowText(GetHWnd(), title.c_str());
+	SetWindowText(GetHWnd(), title);
 	// 保存当前标题，用于修改窗口大小时恢复标题
 	getInstance()->m_sTitle = title;
 }
@@ -525,7 +525,7 @@ void e2d::EApp::setAppName(const EString &appname)
 
 e2d::EString e2d::EApp::getAppName()
 {
-	if (getInstance()->m_sAppName.empty())
+	if (getInstance()->m_sAppName.isEmpty())
 		getInstance()->m_sAppName = getInstance()->m_sTitle;
 	return getInstance()->m_sAppName;
 }
diff --git a/Easy2D/Base/EScene.cpp b/Easy2D/Base/EScene.cpp
index 052e20d5..c32c5dca 100644
--- a/Easy2D/Base/EScene.cpp
+++ b/Easy2D/Base/EScene.cpp
@@ -77,7 +77,7 @@ void e2d::EScene::remove(const EString &childName)
 	return m_pRoot->removeChild(childName);
 }
 
-e2d::EVector<e2d::ENode*>& e2d::EScene::getChildren()
+std::vector<e2d::ENode*>& e2d::EScene::getChildren()
 {
 	return m_pRoot->m_vChildren;
 }
diff --git a/Easy2D/Common/EFont.cpp b/Easy2D/Common/EFont.cpp
index 1e85bac7..21775b3f 100644
--- a/Easy2D/Common/EFont.cpp
+++ b/Easy2D/Common/EFont.cpp
@@ -80,13 +80,13 @@ void e2d::EFont::_initTextFormat()
 	SafeReleaseInterface(&m_pTextFormat);
 
 	HRESULT hr = GetDirectWriteFactory()->CreateTextFormat(
-		m_sFontFamily.c_str(),
-		NULL,                          // Font collection(NULL sets it to the system font collection)
+		m_sFontFamily,
+		NULL,
 		DWRITE_FONT_WEIGHT(m_FontWeight),
 		m_bItalic ? DWRITE_FONT_STYLE_ITALIC : DWRITE_FONT_STYLE_NORMAL,
 		DWRITE_FONT_STRETCH_NORMAL,
 		m_fFontSize,
-		L"en-us",                      // Local
+		L"en-us",
 		&m_pTextFormat
 	);
 
diff --git a/Easy2D/Common/EString.cpp b/Easy2D/Common/EString.cpp
new file mode 100644
index 00000000..01292904
--- /dev/null
+++ b/Easy2D/Common/EString.cpp
@@ -0,0 +1,350 @@
+#include "..\ecommon.h"
+#include <iomanip>
+using namespace e2d;
+
+
+EString::EString()
+{
+	_size = 0;
+	_string = nullptr;
+}
+
+EString::EString(const wchar_t *str)
+{
+	if (str)
+	{
+		_size = wcslen(str);
+		_string = new wchar_t[_size + 1];
+		wcscpy_s(_string, _size + 1, str);
+	}
+	else
+	{
+		_string = nullptr;
+		_size = 0;
+	}
+}
+
+EString::EString(EString && str)
+{
+	_size = str._size;
+	_string = str._string;
+	str._string = nullptr;
+}
+
+EString::EString(const EString &str)
+{
+	if (str._size)
+	{
+		_size = str._size;
+		_string = new wchar_t[_size + 1];
+		wcscpy_s(_string, _size + 1, str._string);
+	}
+	else
+	{
+		_string = nullptr;
+		_size = 0;
+	}
+}
+
+e2d::EString::EString(const std::wstring &str)
+{
+	if (!str.empty())
+	{
+		_size = static_cast<int>(str.length());
+		_string = new wchar_t[_size + 1];
+		wcscpy_s(_string, _size + 1, str.c_str());
+	}
+	else
+	{
+		_string = nullptr;
+		_size = 0;
+	}
+}
+
+EString::~EString()
+{
+	delete[] _string;
+}
+
+EString &EString::operator=(const wchar_t *str)
+{
+	if (_string == str)
+		return *this;
+
+	if (str)
+	{
+		delete[] _string;
+		_size = wcslen(str);
+		_string = new wchar_t[_size + 1];
+		wcscpy_s(_string, _size + 1, str);
+	}
+	else
+	{
+		_string = nullptr;
+		_size = 0;
+	}
+	return *this;
+}
+
+EString &EString::operator=(const EString &str)
+{
+	if (_string == str._string)
+		return *this;
+
+	if (str._size)
+	{
+		delete[] _string;
+		_size = str._size;
+		_string = new wchar_t[_size + 1];
+		wcscpy_s(_string, _size + 1, str._string);
+	}
+	else
+	{
+		_string = nullptr;
+		_size = 0;
+	}
+	return *this;
+}
+
+EString & e2d::EString::operator=(const std::wstring &str)
+{
+	if (!str.empty())
+	{
+		delete[] _string;
+		_size = static_cast<int>(str.length());
+		_string = new wchar_t[_size + 1];
+		wcscpy_s(_string, _size + 1, str.c_str());
+	}
+	else
+	{
+		_string = nullptr;
+		_size = 0;
+	}
+	return *this;
+}
+
+bool EString::operator==(const wchar_t *str)
+{
+	return (wcscmp(str, _string) == 0);
+}
+
+bool EString::operator ==(const EString &str)
+{
+	return (wcscmp(str._string, _string) == 0);
+}
+
+bool e2d::EString::operator==(const std::wstring &str)
+{
+	return (str.compare(_string) == 0);
+}
+
+bool e2d::EString::operator!=(const wchar_t *str)
+{
+	return (wcscmp(str, _string) != 0);
+}
+
+bool e2d::EString::operator!=(const EString &str)
+{
+	return (wcscmp(str._string, _string) != 0);
+}
+
+bool e2d::EString::operator!=(const std::wstring &str)
+{
+	return (str.compare(_string) != 0);
+}
+
+wchar_t &EString::operator[](int index)
+{
+	ASSERT(index >= 0 && index < _size, "EString subscript out of range");
+	return _string[index];
+}
+
+EString EString::operator+(const wchar_t *str)
+{
+	EString str_temp(*this);
+
+	str_temp += str;
+	return std::move(str_temp);
+}
+
+EString EString::operator+(const wchar_t x)
+{
+	EString str_temp(*this);
+
+	str_temp += x;
+	return std::move(str_temp);
+}
+
+EString EString::operator+(const EString &str)
+{
+	EString str_temp(*this);
+
+	str_temp += str;
+	return std::move(str_temp);
+}
+
+EString e2d::EString::operator+(const std::wstring &str)
+{
+	EString str_temp(*this);
+
+	str_temp += str;
+	return std::move(str_temp);
+}
+
+EString &EString::operator+=(const wchar_t x)
+{
+	wchar_t *str_temp = new wchar_t[_size + 2];
+	if (_string) wcscpy_s(str_temp, _size + 2, _string);
+	str_temp[_size] = x;
+	str_temp[_size + 1] = 0;
+
+	delete[] _string;
+	_string = str_temp;
+	_size++;
+	return *this;
+}
+
+EString &EString::operator+=(const wchar_t *str)
+{
+	if (!str) return *this;
+
+	int d_size = wcslen(str);
+	if (d_size == 0) return *this;
+
+	wchar_t *str_temp = new wchar_t[_size + d_size + 1];
+	if (_string) wcscpy_s(str_temp, _size + d_size + 1, _string);
+	wcscpy_s(str_temp + _size, d_size + 1, str);
+
+	delete[] _string;
+	_string = str_temp;
+	_size += d_size;
+	return *this;
+}
+
+EString &EString::operator+=(const EString &str)
+{
+	if (str._size == 0) return *this;
+
+	wchar_t *str_temp = new wchar_t[_size + str._size + 1];
+	if (_string) wcscpy_s(str_temp, _size + str._size + 1, _string);
+	wcscpy_s(str_temp + _size, str._size + 1, str._string);
+
+	delete[] _string;
+	_string = str_temp;
+	_size += str._size;
+	return *this;
+}
+
+EString & e2d::EString::operator+=(const std::wstring &str)
+{
+	if (str.length() == 0) return *this;
+
+	wchar_t *str_temp = new wchar_t[_size + str.length() + 1];
+	if (_string) wcscpy_s(str_temp, _size + str.length() + 1, _string);
+	wcscpy_s(str_temp + _size, str.length() + 1, str.c_str());
+
+	delete[] _string;
+	_string = str_temp;
+	_size += static_cast<int>(str.length());
+	return *this;
+}
+
+unsigned int e2d::EString::hash() const
+{
+	unsigned int hash = 0;
+
+	for (int i = 0; i < _size; i++)
+	{
+		hash *= 16777619;
+		hash ^= (unsigned int)towupper(_string[i]);
+	}
+	return (hash);
+}
+
+std::wistream & e2d::operator>>(std::wistream &cin, EString &str)
+{
+	const int limit_string_size = 4096;
+
+	str._string = new wchar_t[limit_string_size];
+
+	cin >> std::setw(limit_string_size) >> str._string;
+	str._size = wcslen(str._string);
+	return cin;
+}
+
+
+EString e2d::EString::upper() const
+{
+	EString str(*this);
+
+	for (int i = 0; i < str._size; i++)
+		if (str._string[i] >= L'a' && str._string[i] <= L'z')
+			str._string[i] -= (L'a' - L'A');
+
+	return std::move(str);
+}
+
+EString e2d::EString::lower() const
+{
+	EString str(*this);
+
+	for (int i = 0; i < str._size; i++)
+		str._string[i] = towlower(str._string[i]);
+
+	return std::move(str);
+}
+
+EString e2d::EString::sub(int offset, int count) const
+{
+	if (_size == 0 || offset >= _size)
+		return std::move(EString());
+
+	offset = offset >= 0 ? offset : 0;
+
+	if (count < 0 || (offset + count) > _size)
+		count = _size - offset;
+
+	EString str_temp;
+	str_temp._string = new wchar_t[count + 1];
+
+	for (int i = 0; i < count; i++)
+		str_temp._string[i] = (_string + offset)[i];
+	str_temp._string[count] = 0;
+
+	return std::move(str_temp);
+}
+
+int e2d::EString::findFirstOf(wchar_t ch) const
+{
+	for (int i = 0; i < _size; i++)
+		if (_string[i] == ch)
+			return i;
+
+	return -1;
+}
+
+int e2d::EString::findLastOf(wchar_t ch) const
+{
+	int index = -1;
+
+	for (int i = 0; i < _size; i++)
+		if (_string[i] == ch)
+			index = i;
+
+	return index;
+}
+
+EString & e2d::EString::append(wchar_t ch)
+{
+	return (*this) += ch;
+}
+
+EString & e2d::EString::append(wchar_t * str)
+{
+	return (*this) += str;
+}
+
+EString & e2d::EString::append(EString & str)
+{
+	return (*this) += str;
+}
diff --git a/Easy2D/Common/ETexture.cpp b/Easy2D/Common/ETexture.cpp
index 89bf9a6c..c064f90c 100644
--- a/Easy2D/Common/ETexture.cpp
+++ b/Easy2D/Common/ETexture.cpp
@@ -46,9 +46,9 @@ e2d::ETexture::~ETexture()
 
 void e2d::ETexture::loadFromFile(const EString & fileName)
 {
-	WARN_IF(fileName.empty(), "ETexture cannot load bitmap from NULL file name.");
+	WARN_IF(fileName.isEmpty(), "ETexture cannot load bitmap from NULL file name.");
 
-	if (fileName.empty())
+	if (fileName.isEmpty())
 		return;
 
 	if (!e2d::ETexture::preload(fileName))
@@ -57,10 +57,7 @@ void e2d::ETexture::loadFromFile(const EString & fileName)
 		return;
 	}
 
-	std::hash<e2d::EString> h;
-	size_t hash = h(fileName);
-
-	m_pBitmap = s_mBitmapsFromFile.at(hash);
+	m_pBitmap = s_mBitmapsFromFile.at(fileName.hash());
 }
 
 void e2d::ETexture::loadFromResource(LPCTSTR resourceName, LPCTSTR resourceType)
@@ -122,10 +119,7 @@ e2d::ESize e2d::ETexture::getSourceSize() const
 
 bool e2d::ETexture::preload(const EString & fileName)
 {
-	std::hash<e2d::EString> h;
-	size_t hash = h(fileName);
-
-	if (s_mBitmapsFromFile.find(hash) != s_mBitmapsFromFile.end())
+	if (s_mBitmapsFromFile.find(fileName.hash()) != s_mBitmapsFromFile.end())
 	{
 		return true;
 	}
@@ -140,7 +134,7 @@ bool e2d::ETexture::preload(const EString & fileName)
 
 	// 创建解码器
 	hr = GetImagingFactory()->CreateDecoderFromFilename(
-		fileName.c_str(),
+		fileName,
 		NULL,
 		GENERIC_READ,
 		WICDecodeMetadataCacheOnLoad,
@@ -183,12 +177,9 @@ bool e2d::ETexture::preload(const EString & fileName)
 	if (SUCCEEDED(hr))
 	{
 		// 保存图片指针和图片的 Hash 名
-		std::hash<e2d::EString> h;
-		size_t hash = h(fileName);
-
 		s_mBitmapsFromFile.insert(
 			std::map<size_t, ID2D1Bitmap*>::value_type(
-				hash,
+				fileName.hash(),
 				pBitmap)
 		);
 	}
diff --git a/Easy2D/Easy2D.vcxproj b/Easy2D/Easy2D.vcxproj
index eeec2dec..fc40508c 100644
--- a/Easy2D/Easy2D.vcxproj
+++ b/Easy2D/Easy2D.vcxproj
@@ -212,6 +212,7 @@
     <ClCompile Include="Common\EFont.cpp" />
     <ClCompile Include="Common\EObject.cpp" />
     <ClCompile Include="Common\ESpriteFrame.cpp" />
+    <ClCompile Include="Common\EString.cpp" />
     <ClCompile Include="Common\ETexture.cpp" />
     <ClCompile Include="Geometry\ECircle.cpp" />
     <ClCompile Include="Geometry\EEllipse.cpp" />
@@ -264,7 +265,6 @@
     <ClInclude Include="enodes.h" />
     <ClInclude Include="etools.h" />
     <ClInclude Include="etransitions.h" />
-    <ClInclude Include="etypedef.h" />
     <ClInclude Include="Win\MciPlayer.h" />
     <ClInclude Include="Win\winbase.h" />
   </ItemGroup>
diff --git a/Easy2D/Easy2D.vcxproj.filters b/Easy2D/Easy2D.vcxproj.filters
index a603ca5d..e793408e 100644
--- a/Easy2D/Easy2D.vcxproj.filters
+++ b/Easy2D/Easy2D.vcxproj.filters
@@ -219,6 +219,9 @@
     <ClCompile Include="Msg\EPhysicsMsg.cpp">
       <Filter>Msg</Filter>
     </ClCompile>
+    <ClCompile Include="Common\EString.cpp">
+      <Filter>Common</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="Win\winbase.h">
@@ -235,7 +238,6 @@
     <ClInclude Include="egeometry.h" />
     <ClInclude Include="elisteners.h" />
     <ClInclude Include="emanagers.h" />
-    <ClInclude Include="etypedef.h" />
     <ClInclude Include="Win\MciPlayer.h">
       <Filter>Win</Filter>
     </ClInclude>
diff --git a/Easy2D/Manager/EActionManager.cpp b/Easy2D/Manager/EActionManager.cpp
index e171a3df..f0e5e0f6 100644
--- a/Easy2D/Manager/EActionManager.cpp
+++ b/Easy2D/Manager/EActionManager.cpp
@@ -2,7 +2,7 @@
 #include "..\eactions.h"
 #include "..\Win\winbase.h"
 
-static e2d::EVector<e2d::EAction*> s_vActions;
+static std::vector<e2d::EAction*> s_vActions;
 
 
 void e2d::EActionManager::addAction(EAction * action)
diff --git a/Easy2D/Manager/EMsgManager.cpp b/Easy2D/Manager/EMsgManager.cpp
index f020c054..ca0f10d9 100644
--- a/Easy2D/Manager/EMsgManager.cpp
+++ b/Easy2D/Manager/EMsgManager.cpp
@@ -5,9 +5,9 @@
 
 
 // 鼠标消息监听器
-e2d::EVector<e2d::EListenerMouse*> s_vMouseListeners;
+std::vector<e2d::EListenerMouse*> s_vMouseListeners;
 // 按键消息监听器
-e2d::EVector<e2d::EListenerKeyboard*> s_vKeyboardListeners;
+std::vector<e2d::EListenerKeyboard*> s_vKeyboardListeners;
 
 
 void e2d::EMsgManager::MouseProc(UINT message, WPARAM wParam, LPARAM lParam)
@@ -20,7 +20,7 @@ void e2d::EMsgManager::MouseProc(UINT message, WPARAM wParam, LPARAM lParam)
 	if (s_vMouseListeners.empty()) return;
 
 	// 执行鼠标消息监听函数
-	EVector<EListenerMouse*>::size_type i = s_vMouseListeners.size();
+	std::vector<EListenerMouse*>::size_type i = s_vMouseListeners.size();
 
 	do
 	{
@@ -45,7 +45,7 @@ void e2d::EMsgManager::KeyboardProc(UINT message, WPARAM wParam, LPARAM lParam)
 	if (s_vKeyboardListeners.empty()) return;
 
 	// 执行按键消息监听函数
-	EVector<EListenerMouse*>::size_type i = s_vKeyboardListeners.size();
+	std::vector<EListenerMouse*>::size_type i = s_vKeyboardListeners.size();
 
 	do
 	{
@@ -133,7 +133,7 @@ void e2d::EMsgManager::stopMouseListeners(const EString & name)
 void e2d::EMsgManager::delMouseListeners(const EString & name)
 {
 	// 删除鼠标消息监听器
-	EVector<EListenerMouse*>::iterator mIter;
+	std::vector<EListenerMouse*>::iterator mIter;
 	for (mIter = s_vMouseListeners.begin(); mIter != s_vMouseListeners.end();)
 	{
 		if ((*mIter)->getName() == name)
@@ -175,7 +175,7 @@ void e2d::EMsgManager::stopKeyboardListeners(const EString & name)
 void e2d::EMsgManager::delKeyboardListeners(const EString & name)
 {
 	// 删除按键消息监听器
-	EVector<EListenerKeyboard*>::iterator kIter;
+	std::vector<EListenerKeyboard*>::iterator kIter;
 	for (kIter = s_vKeyboardListeners.begin(); kIter != s_vKeyboardListeners.end();)
 	{
 		if ((*kIter)->getName() == name)
diff --git a/Easy2D/Manager/EObjectManager.cpp b/Easy2D/Manager/EObjectManager.cpp
index 7c6e3e15..16bd3892 100644
--- a/Easy2D/Manager/EObjectManager.cpp
+++ b/Easy2D/Manager/EObjectManager.cpp
@@ -9,7 +9,7 @@
 // 让其自动释放
 
 // 释放池容器
-static e2d::EVector<e2d::EObject*> s_vPool;
+static std::vector<e2d::EObject*> s_vPool;
 // 标志释放池执行状态
 static bool s_bNotifyed = false;
 
@@ -19,7 +19,7 @@ void e2d::EObjectManager::__flush()
 
 	s_bNotifyed = false;
 	// 创建迭代器
-	static EVector<e2d::EObject*>::iterator iter;
+	static std::vector<e2d::EObject*>::iterator iter;
 	// 循环遍历容器中的所有对象
 	for (iter = s_vPool.begin(); iter != s_vPool.end();)
 	{
diff --git a/Easy2D/Manager/EPhysicsManager.cpp b/Easy2D/Manager/EPhysicsManager.cpp
index 871cec83..70091872 100644
--- a/Easy2D/Manager/EPhysicsManager.cpp
+++ b/Easy2D/Manager/EPhysicsManager.cpp
@@ -4,9 +4,9 @@
 #include "..\egeometry.h"
 
 // 监听器集合
-e2d::EVector<e2d::EListenerPhysics*> s_vListeners;
+std::vector<e2d::EListenerPhysics*> s_vListeners;
 // 形状集合
-e2d::EVector<e2d::EGeometry*> s_vGeometries;
+std::vector<e2d::EGeometry*> s_vGeometries;
 
 
 void e2d::EPhysicsManager::PhysicsGeometryProc(EGeometry * pActiveGeometry)
@@ -48,7 +48,7 @@ void e2d::EPhysicsManager::PhysicsGeometryProc(EGeometry * pActiveGeometry)
 void e2d::EPhysicsManager::PhysicsListenerProc()
 {
 	// 执行鼠标消息监听函数
-	EVector<EListenerPhysics*>::size_type i = s_vListeners.size();
+	std::vector<EListenerPhysics*>::size_type i = s_vListeners.size();
 
 	do
 	{
@@ -136,7 +136,7 @@ void e2d::EPhysicsManager::stopListeners(const EString & name)
 
 void e2d::EPhysicsManager::delListeners(const EString & name)
 {
-	EVector<EListenerPhysics*>::iterator iter;
+	std::vector<EListenerPhysics*>::iterator iter;
 	for (iter = s_vListeners.begin(); iter != s_vListeners.end();)
 	{
 		if ((*iter)->getName() == name)
diff --git a/Easy2D/Manager/ETimerManager.cpp b/Easy2D/Manager/ETimerManager.cpp
index 18827b25..d4192aa1 100644
--- a/Easy2D/Manager/ETimerManager.cpp
+++ b/Easy2D/Manager/ETimerManager.cpp
@@ -3,7 +3,7 @@
 #include "..\enodes.h"
 #include "..\Win\winbase.h"
 
-static e2d::EVector<e2d::ETimer*> s_vTimers;
+static std::vector<e2d::ETimer*> s_vTimers;
 
 
 void e2d::ETimerManager::TimerProc()
@@ -69,7 +69,7 @@ void e2d::ETimerManager::stopTimers(const EString & name)
 
 void e2d::ETimerManager::delTimers(const EString & name)
 {
-	EVector<ETimer*>::iterator mIter;
+	std::vector<ETimer*>::iterator mIter;
 	for (mIter = s_vTimers.begin(); mIter != s_vTimers.end();)
 	{
 		if ((*mIter)->getName() == name)
diff --git a/Easy2D/Node/ENode.cpp b/Easy2D/Node/ENode.cpp
index 40d24c54..192e337d 100644
--- a/Easy2D/Node/ENode.cpp
+++ b/Easy2D/Node/ENode.cpp
@@ -573,7 +573,7 @@ e2d::EScene * e2d::ENode::getParentScene() const
 	return m_pParentScene;
 }
 
-e2d::EVector<e2d::ENode*>& e2d::ENode::getChildren()
+std::vector<e2d::ENode*>& e2d::ENode::getChildren()
 {
 	return m_vChildren;
 }
@@ -585,10 +585,9 @@ size_t e2d::ENode::getChildrenCount() const
 
 e2d::ENode * e2d::ENode::getChild(const EString & name)
 {
-	WARN_IF(name.empty(), "Invalid ENode name.");
+	WARN_IF(name.isEmpty(), "Invalid ENode name.");
 
-	std::hash<EString> h;
-	size_t hash = h(name);
+	unsigned int hash = name.hash();
 
 	for (const auto& child : m_vChildren)
 	{
@@ -640,7 +639,7 @@ bool e2d::ENode::removeChild(ENode * child)
 
 void e2d::ENode::removeChild(const EString & childName)
 {
-	WARN_IF(childName.empty(), "Invalid ENode name.");
+	WARN_IF(childName.isEmpty(), "Invalid ENode name.");
 
 	if (m_vChildren.empty())
 	{
@@ -648,8 +647,7 @@ void e2d::ENode::removeChild(const EString & childName)
 	}
 
 	// 计算名称 Hash 值
-	std::hash<EString> h;
-	size_t hash = h(childName);
+	unsigned int hash = childName.hash();
 
 	size_t size = m_vChildren.size();
 	for (size_t i = 0; i < size; i++)
@@ -782,15 +780,14 @@ void e2d::ENode::setVisiable(bool value)
 
 void e2d::ENode::setName(const EString & name)
 {
-	WARN_IF(name.empty(), "Invalid ENode name.");
+	WARN_IF(name.isEmpty(), "Invalid ENode name.");
 
-	if (!name.empty())
+	if (!name.isEmpty())
 	{
 		// 保存节点名
 		m_sName = name;
 		// 保存节点 Hash 名
-		std::hash<EString> h;
-		m_nHashName = h(name);
+		m_nHashName = name.hash();
 	}
 }
 
diff --git a/Easy2D/Node/EText.cpp b/Easy2D/Node/EText.cpp
index b13f567b..6f002daf 100644
--- a/Easy2D/Node/EText.cpp
+++ b/Easy2D/Node/EText.cpp
@@ -94,7 +94,7 @@ void e2d::EText::_render()
 {
 	GetSolidColorBrush()->SetColor(D2D1::ColorF(m_pFont->m_Color, m_fDisplayOpacity));
 	GetRenderTarget()->DrawTextW(
-		m_sText.c_str(),
+		m_sText,
 		UINT32(m_sText.length()),
 		m_pFont->_getTextFormat(),
 		D2D1::RectF(
@@ -110,7 +110,7 @@ void e2d::EText::_render()
 void e2d::EText::_initTextLayout()
 {
 	// 未设置字体或空字符串时，文本宽高为 0
-	if (!m_pFont || m_sText.empty())
+	if (!m_pFont || m_sText.isEmpty())
 	{
 		this->_setHeight(0);
 		m_fWordWrappingWidth = 0;
@@ -131,8 +131,8 @@ void e2d::EText::_initTextLayout()
 	IDWriteTextLayout * pDWriteTextLayout = nullptr;
 
 	HRESULT hr = GetDirectWriteFactory()->CreateTextLayout(
-		m_sText.c_str(),
-		UINT32(m_sText.size()),
+		m_sText,
+		UINT32(m_sText.length()),
 		m_pFont->_getTextFormat(),
 		m_bWordWrapping ? m_fWordWrappingWidth : 0,
 		0,
diff --git a/Easy2D/Tool/EFileUtils.cpp b/Easy2D/Tool/EFileUtils.cpp
index 3d6aee6e..0e18e061 100644
--- a/Easy2D/Tool/EFileUtils.cpp
+++ b/Easy2D/Tool/EFileUtils.cpp
@@ -35,14 +35,14 @@ e2d::EString e2d::EFileUtils::getLocalAppDataPath()
 e2d::EString e2d::EFileUtils::getTempPath()
 {
 	// 获取临时文件目录
-	TCHAR path[_MAX_PATH];
+	wchar_t path[_MAX_PATH];
 	::GetTempPath(_MAX_PATH, path);
 
 	// 创建临时文件目录
 	e2d::EString tempFilePath = path + e2d::EApp::getAppName();
-	if (_waccess(tempFilePath.c_str(), 0) == -1)
+	if (_waccess(tempFilePath, 0) == -1)
 	{
-		_wmkdir(tempFilePath.c_str());
+		_wmkdir(tempFilePath);
 	}
 	return tempFilePath;
 }
@@ -50,67 +50,66 @@ e2d::EString e2d::EFileUtils::getTempPath()
 e2d::EString e2d::EFileUtils::getDefaultSavePath()
 {
 	EString path = EFileUtils::getLocalAppDataPath();
-	WARN_IF(path.empty(), "Cannot get local AppData path!");
+	WARN_IF(path.isEmpty(), "Cannot get local AppData path!");
 
-	path.append(L"\\");
-	path.append(EApp::getAppName());
+	path += L"\\" + EApp::getAppName();
 
-	if (_waccess(path.c_str(), 0) == -1)
+	if (_waccess(path, 0) == -1)
 	{
-		_wmkdir(path.c_str());
+		_wmkdir(path);
 	}
 
-	path.append(L"\\DefaultData.ini");
+	path += L"\\DefaultData.ini";
 
 	return path;
 }
 
 void e2d::EFileUtils::saveInt(const EString & key, int value)
 {
-	::WritePrivateProfileString(L"Default", key.c_str(), std::to_wstring(value).c_str(), getDefaultSavePath().c_str());
+	::WritePrivateProfileString(L"Default", key, EString::parse(value), getDefaultSavePath());
 }
 
 void e2d::EFileUtils::saveFloat(const EString & key, float value)
 {
-	::WritePrivateProfileString(L"Default", key.c_str(), std::to_wstring(value).c_str(), getDefaultSavePath().c_str());
+	::WritePrivateProfileString(L"Default", key, EString::parse(value), getDefaultSavePath());
 }
 
 void e2d::EFileUtils::saveString(const EString & key, const EString & value)
 {
-	::WritePrivateProfileString(L"Default", key.c_str(), value.c_str(), getDefaultSavePath().c_str());
+	::WritePrivateProfileString(L"Default", key, value, getDefaultSavePath());
 }
 
 int e2d::EFileUtils::getInt(const EString & key, int default)
 {
-	return ::GetPrivateProfileInt(L"Default", key.c_str(), default, getDefaultSavePath().c_str());
+	return ::GetPrivateProfileInt(L"Default", key, default, getDefaultSavePath());
 }
 
 float e2d::EFileUtils::getFloat(const EString & key, float default)
 {
-	TCHAR temp[32] = { 0 };
-	::GetPrivateProfileString(L"Default", key.c_str(), std::to_wstring(default).c_str(), temp, 31, getDefaultSavePath().c_str());
+	wchar_t temp[32] = { 0 };
+	::GetPrivateProfileString(L"Default", key, EString::parse(default), temp, 31, getDefaultSavePath());
 	return std::stof(temp);
 }
 
 e2d::EString e2d::EFileUtils::getString(const EString & key, const EString & default)
 {
-	TCHAR temp[256] = { 0 };
-	::GetPrivateProfileString(L"Default", key.c_str(), default.c_str(), temp, 255, getDefaultSavePath().c_str());
-	return EString(temp);
+	wchar_t temp[256] = { 0 };
+	::GetPrivateProfileString(L"Default", key, default, temp, 255, getDefaultSavePath());
+	return temp;
 }
 
 e2d::EString e2d::EFileUtils::getFileExtension(const EString & filePath)
 {
 	EString fileExtension;
 	// 找到文件名中的最后一个 '.' 的位置
-	size_t pos = filePath.find_last_of('.');
+	size_t pos = filePath.findLastOf(L'.');
 	// 判断 pos 是否是个有效位置
-	if (pos != EString::npos)
+	if (pos != -1)
 	{
 		// 截取扩展名
-		fileExtension = filePath.substr(pos, filePath.length());
+		fileExtension = filePath.sub(pos, filePath.length());
 		// 转换为小写字母
-		std::transform(fileExtension.begin(), fileExtension.end(), fileExtension.begin(), ::tolower);
+		fileExtension = fileExtension.lower();
 	}
 
 	return fileExtension;
@@ -122,15 +121,15 @@ e2d::EString e2d::EFileUtils::getSaveFilePath(const EString & title, const EStri
 	OPENFILENAME ofn = { 0 };
 	TCHAR strFilename[MAX_PATH] = { 0 };				// 用于接收文件名
 	ofn.lStructSize = sizeof(OPENFILENAME);				// 结构体大小
-	ofn.hwndOwner = GetHWnd();							// 拥有着窗口句柄，NULL 表示对话框是非模态的
-	ofn.lpstrFilter = L"所有文件\0*.*\0\0";			// 设置过滤
+	ofn.hwndOwner = GetHWnd();							// 窗口句柄
+	ofn.lpstrFilter = L"所有文件\0*.*\0\0";				// 设置过滤
 	ofn.nFilterIndex = 1;								// 过滤器索引
 	ofn.lpstrFile = strFilename;						// 接收返回的文件路径和文件名
 	ofn.nMaxFile = sizeof(strFilename);					// 缓冲区长度
 	ofn.lpstrInitialDir = NULL;							// 初始目录为默认
-	ofn.Flags = OFN_PATHMUSTEXIST | OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT;// 目录必须存在，覆盖文件前发出警告
-	ofn.lpstrTitle = title.c_str();						// 使用系统默认标题留空即可
-	ofn.lpstrDefExt = defExt.c_str();					// 默认追加的扩展名
+	ofn.Flags = OFN_PATHMUSTEXIST | OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT;
+	ofn.lpstrTitle = title;								// 标题
+	ofn.lpstrDefExt = defExt;							// 默认追加的扩展名
 
 	if (GetSaveFileName(&ofn))
 	{
diff --git a/Easy2D/Tool/EMusicUtils.cpp b/Easy2D/Tool/EMusicUtils.cpp
index 889063d2..0381dddc 100644
--- a/Easy2D/Tool/EMusicUtils.cpp
+++ b/Easy2D/Tool/EMusicUtils.cpp
@@ -6,12 +6,6 @@
 typedef std::pair<UINT, MciPlayer *> Music;
 typedef std::map<UINT, MciPlayer *> MusicList;
 
-static UINT Hash(const e2d::EString & key)
-{
-	static std::hash<e2d::EString> h;
-	return h(key);
-}
-
 static MusicList& getMciPlayerList()
 {
 	static MusicList s_List;
@@ -43,10 +37,10 @@ UINT e2d::EMusicUtils::playMusic(const EString & musicResourceName, const EStrin
 
 UINT e2d::EMusicUtils::preloadMusic(const EString & musicFilePath)
 {
-	if (musicFilePath.empty()) 
+	if (musicFilePath.isEmpty()) 
 		return 0;
 
-	UINT nRet = ::Hash(musicFilePath);
+	UINT nRet = musicFilePath.hash();
 
 	if (getMciPlayerList().end() != getMciPlayerList().find(nRet)) 
 		return nRet;
@@ -64,10 +58,10 @@ UINT e2d::EMusicUtils::preloadMusic(const EString & musicFilePath)
 
 UINT e2d::EMusicUtils::preloadMusic(const EString & musicResourceName, const EString & musicResourceType, const EString & musicExtension)
 {
-	if (musicResourceName.empty() || musicResourceType.empty()) 
+	if (musicResourceName.isEmpty() || musicResourceType.isEmpty())
 		return 0;
 
-	UINT nRet = ::Hash(musicResourceName);
+	UINT nRet = musicResourceName.hash();
 
 	if (getMciPlayerList().end() != getMciPlayerList().find(nRet)) 
 		return nRet;
@@ -96,7 +90,7 @@ bool e2d::EMusicUtils::resumeMusic(UINT musicId)
 
 bool e2d::EMusicUtils::resumeMusic(const EString & musicName)
 {
-	return resumeMusic(Hash(musicName));;
+	return resumeMusic(musicName.hash());;
 }
 
 bool e2d::EMusicUtils::pauseMusic(UINT musicId)
@@ -112,7 +106,7 @@ bool e2d::EMusicUtils::pauseMusic(UINT musicId)
 
 bool e2d::EMusicUtils::pauseMusic(const EString & musicName)
 {
-	return pauseMusic(Hash(musicName));
+	return pauseMusic(musicName.hash());
 }
 
 bool e2d::EMusicUtils::stopMusic(UINT musicId)
@@ -128,7 +122,7 @@ bool e2d::EMusicUtils::stopMusic(UINT musicId)
 
 bool e2d::EMusicUtils::stopMusic(const EString & musicName)
 {
-	return stopMusic(Hash(musicName));;
+	return stopMusic(musicName.hash());;
 }
 
 void e2d::EMusicUtils::pauseAllMusics()
diff --git a/Easy2D/Win/MciPlayer.cpp b/Easy2D/Win/MciPlayer.cpp
index 41c4c67e..59beac71 100644
--- a/Easy2D/Win/MciPlayer.cpp
+++ b/Easy2D/Win/MciPlayer.cpp
@@ -66,14 +66,14 @@ MciPlayer::~MciPlayer()
 
 bool MciPlayer::open(const e2d::EString & pFileName, UINT uId)
 {
-	if (pFileName.empty())
+	if (pFileName.isEmpty())
 		return false;
 
 	close();
 
 	MCI_OPEN_PARMS mciOpen = { 0 };
 	mciOpen.lpstrDeviceType = (LPCTSTR)MCI_ALL_DEVICE_ID;
-	mciOpen.lpstrElementName = pFileName.c_str();
+	mciOpen.lpstrElementName = pFileName;
 
 	MCIERROR mciError;
 	mciError = mciSendCommand(
@@ -96,18 +96,16 @@ bool MciPlayer::open(const e2d::EString & pFileName, UINT uId)
 bool MciPlayer::open(const e2d::EString & pResouceName, const e2d::EString & pResouceType, const e2d::EString & musicExtension, UINT uId)
 {
 	// 忽略不存在的文件
-	if (pResouceName.empty() || pResouceType.empty() || musicExtension.empty()) return false;
+	if (pResouceName.isEmpty() || pResouceType.isEmpty() || musicExtension.isEmpty()) return false;
 
 	// 获取临时文件目录
 	e2d::EString tempFileName = e2d::EFileUtils::getTempPath();
 
 	// 产生临时文件的文件名
-	tempFileName.append(L"\\");
-	tempFileName.append(std::to_wstring(uId));
-	tempFileName.append(L"." + musicExtension);
+	tempFileName = tempFileName + L"\\" + uId + L"." + musicExtension;
 
 	// 导出资源为临时文件
-	if (ExtractResource(tempFileName.c_str(), pResouceType.c_str(), pResouceName.c_str()))
+	if (ExtractResource(tempFileName, pResouceType, pResouceName))
 	{
 		return open(tempFileName, uId);
 	}
diff --git a/Easy2D/eactions.h b/Easy2D/eactions.h
index 490dafba..52e73da0 100644
--- a/Easy2D/eactions.h
+++ b/Easy2D/eactions.h
@@ -144,7 +144,7 @@ protected:
 
 protected:
 	EPoint	m_BeginPos;
-	EVec	m_MoveVector;
+	EVec	m_MoveVec;
 };
 
 
@@ -605,7 +605,7 @@ protected:
 
 protected:
 	UINT m_nFrameIndex;
-	EVector<ESpriteFrame*> m_vFrames;
+	std::vector<ESpriteFrame*> m_vFrames;
 };
 
 
diff --git a/Easy2D/easy2d.h b/Easy2D/easy2d.h
index 2d4a73f2..3d51d77c 100644
--- a/Easy2D/easy2d.h
+++ b/Easy2D/easy2d.h
@@ -1,10 +1,11 @@
 /******************************************************
-* Easy2D Game Engine
+* Easy2D Game Framework
 * 
 * Website: http://www.easy2d.cn
-* Source Code: https://gitee.com/werelone/Easy2D
+* Source Code: https://github.com/Nomango/Easy2D
 ******************************************************/
 
+
 #pragma once
 
 #ifndef __cplusplus
@@ -17,7 +18,6 @@
 
 
 #include "emacros.h"
-#include "etypedef.h"
 #include "ecommon.h"
 #include "ebase.h"
 #include "emanagers.h"
diff --git a/Easy2D/ebase.h b/Easy2D/ebase.h
index a9bc132c..773ca7ce 100644
--- a/Easy2D/ebase.h
+++ b/Easy2D/ebase.h
@@ -225,7 +225,7 @@ public:
 	);
 
 	// 获取所有子节点
-	EVector<e2d::ENode*> &getChildren();
+	std::vector<e2d::ENode*> &getChildren();
 
 	// 获取子节点数量
 	size_t getChildrenCount() const;
diff --git a/Easy2D/ecommon.h b/Easy2D/ecommon.h
index 3c873f2e..83d4d81a 100644
--- a/Easy2D/ecommon.h
+++ b/Easy2D/ecommon.h
@@ -1,11 +1,251 @@
 #pragma once
 #include "emacros.h"
-#include "etypedef.h"
+#include <vector>
+#include <functional>
+#include <sstream>
 
 namespace e2d
 {
 
 
+// 表示坐标的结构体
+struct EPoint
+{
+	float x;
+	float y;
+
+	EPoint()
+	{
+		x = 0;
+		y = 0;
+	}
+
+	EPoint(float x, float y)
+	{
+		this->x = x;
+		this->y = y;
+	}
+
+	EPoint operator + (EPoint const & p)
+	{
+		return EPoint(x + p.x, y + p.y);
+	}
+
+	EPoint operator - (EPoint const & p)
+	{
+		return EPoint(x - p.x, y - p.y);
+	}
+
+	EPoint operator * (float const & value)
+	{
+		return EPoint(x * value, y * value);
+	}
+
+	EPoint operator / (float const & value)
+	{
+		return EPoint(x / value, y / value);
+	}
+};
+
+// 表示二维向量的结构体
+typedef EPoint EVec;
+
+// 表示大小的结构体
+struct ESize
+{
+	float width;
+	float height;
+
+	ESize()
+	{
+		width = 0;
+		height = 0;
+	}
+
+	ESize(float width, float height)
+	{
+		this->width = width;
+		this->height = height;
+	}
+
+	ESize operator + (ESize const & size)
+	{
+		return ESize(width + size.width, height + size.height);
+	}
+
+	ESize operator - (ESize const & size)
+	{
+		return ESize(width - size.width, height - size.height);
+	}
+
+	ESize operator * (float const & value)
+	{
+		return ESize(width * value, height * value);
+	}
+
+	ESize operator / (float const & value)
+	{
+		return ESize(width / value, height / value);
+	}
+};
+
+// 表示窗口样式的结构体
+struct EWindowStyle
+{
+	LPCTSTR m_pIconID;	/* 程序图标 ID */
+	bool m_bNoClose;	/* 禁用关闭按钮 */
+	bool m_bNoMiniSize;	/* 禁用最小化按钮 */
+	bool m_bTopMost;	/* 窗口置顶 */
+
+	EWindowStyle()
+	{
+		m_pIconID = 0;
+		m_bNoClose = false;
+		m_bNoMiniSize = false;
+		m_bTopMost = false;
+	}
+
+	EWindowStyle(
+		LPCTSTR pIconID
+	)
+	{
+		m_pIconID = pIconID;
+		m_bNoClose = false;
+		m_bNoMiniSize = false;
+		m_bTopMost = false;
+	}
+
+	EWindowStyle(
+		LPCTSTR pIconID,
+		bool bNoClose,
+		bool bNoMiniSize,
+		bool bTopMost
+	)
+	{
+		m_pIconID = pIconID;
+		m_bNoClose = bNoClose;
+		m_bNoMiniSize = bNoMiniSize;
+		m_bTopMost = bTopMost;
+	}
+};
+
+// 字符串
+class EString
+{
+public:
+	EString();
+	EString(const wchar_t *);
+	EString(const EString &);
+	EString(const std::wstring &);
+	EString(EString &&);
+
+	~EString();
+
+	EString& operator=(const wchar_t *);
+	EString& operator=(const EString &);
+	EString& operator=(const std::wstring &);
+
+	bool operator==(const wchar_t *);
+	bool operator==(const EString &);
+	bool operator==(const std::wstring &);
+
+	bool operator!=(const wchar_t *);
+	bool operator!=(const EString &);
+	bool operator!=(const std::wstring &);
+
+	wchar_t &operator[](int);
+
+	EString operator+(const wchar_t);
+	EString operator+(const wchar_t *);
+	EString operator+(const EString &);
+	EString operator+(const std::wstring &);
+
+	template<typename T>
+	EString &operator+(const T value)
+	{
+		EString str_temp(*this);
+
+		str_temp += value;
+		return std::move(str_temp);
+	}
+
+	EString &operator +=(const wchar_t);
+	EString &operator +=(const wchar_t *);
+	EString &operator +=(const EString &);
+	EString &operator +=(const std::wstring &);
+
+	template<typename T>
+	EString &operator +=(const T value)
+	{
+		std::wostringstream ss;
+		ss << value;
+		return (*this) += ss.str();
+	}
+
+	friend std::wistream &operator>>(std::wistream &, EString &);
+
+	operator const wchar_t*() const { return _string; }
+	operator bool() const { return _size != 0; }
+
+	// 判断字符串是否为空
+	bool isEmpty() const { return _size == 0; }
+
+	// 获取字符串长度
+	int length() const { return _size; }
+
+	// 获取大写字符串
+	EString upper() const;
+
+	// 获取小写字符串
+	EString lower() const;
+
+	// 获取裁剪字符串
+	EString sub(int offset, int count = -1) const;
+
+	// 获取字符串中第一个特定字符的下标
+	int findFirstOf(wchar_t ch) const;
+
+	// 获取字符串中最后一个特定字符的下标
+	int findLastOf(wchar_t ch) const;
+
+	// 后接字符
+	EString &append(wchar_t ch);
+
+	// 后接字符串
+	EString &append(wchar_t *str);
+
+	// 后接字符串
+	EString &append(EString &str);
+
+	// 后接字符串
+	template<typename T>
+	EString &append(T &value)
+	{
+		return (*this) += value;
+	}
+
+	// 获取该字符串的散列值
+	unsigned int hash() const;
+
+	// 将模板类型转化为字符串
+	template<typename T>
+	static EString parse(const T value)
+	{
+		EString str;
+
+		std::wostringstream ss;
+		ss << value;
+		str += ss.str();
+
+		return std::move(str);
+	}
+
+private:
+	wchar_t *_string;
+	int _size;
+};
+
+// 颜色
 class EColor
 {
 public:
@@ -154,7 +394,7 @@ public:
 	};
 };
 
-
+// 字体粗细值
 class EFontWeight
 {
 public:
@@ -588,4 +828,36 @@ protected:
 	ETexture * m_pTexture;
 };
 
+class ENode;
+
+// 定时器回调函数（参数为该定时器被调用的次数，从 0 开始）
+typedef std::function<void(int)> TIMER_CALLBACK;
+
+// 按钮点击回调函数
+typedef std::function<void()> BUTTON_CLICK_CALLBACK;
+
+// 按键消息监听回调函数
+typedef std::function<void()> KEY_LISTENER_CALLBACK;
+
+// 鼠标消息监听回调函数
+typedef std::function<void()> MOUSE_LISTENER_CALLBACK;
+
+// 鼠标点击消息监听回调函数（参数为点击位置）
+typedef std::function<void(EPoint mousePos)> MOUSE_CLICK_LISTENER_CALLBACK;
+
+// 鼠标按下消息监听回调函数（参数为按下位置）
+typedef MOUSE_CLICK_LISTENER_CALLBACK  MOUSE_PRESS_LISTENER_CALLBACK;
+
+// 鼠标双击消息监听回调函数（参数为双击位置）
+typedef MOUSE_CLICK_LISTENER_CALLBACK  MOUSE_DBLCLK_LISTENER_CALLBACK;
+
+// 鼠标拖动消息监听回调函数（参数为拖动前位置和拖动后位置）
+typedef std::function<void(EPoint begin, EPoint end)> MOUSE_DRAG_LISTENER_CALLBACK;
+
+// 物理世界消息监听器回调函数
+typedef std::function<void()> PHYSICS_LISTENER_CALLBACK;
+
+// 碰撞消息监听器回调函数
+typedef PHYSICS_LISTENER_CALLBACK  COLLISION_LISTENER_CALLBACK;
+
 }
\ No newline at end of file
diff --git a/Easy2D/emacros.h b/Easy2D/emacros.h
index 9d5a5075..79934a1a 100644
--- a/Easy2D/emacros.h
+++ b/Easy2D/emacros.h
@@ -30,8 +30,6 @@
 
 // C RunTime Header Files
 #include <wchar.h>
-#include <stdio.h>
-#include <stdlib.h>
 #include <d2d1.h>
 #include <d2d1helper.h>
 #include <dwrite.h>
diff --git a/Easy2D/enodes.h b/Easy2D/enodes.h
index b031dcd5..c1493952 100644
--- a/Easy2D/enodes.h
+++ b/Easy2D/enodes.h
@@ -104,7 +104,7 @@ public:
 	virtual EScene * getParentScene() const;
 
 	// 获取所有子节点
-	virtual EVector<ENode*> &getChildren();
+	virtual std::vector<ENode*> &getChildren();
 
 	// 获取子节点数量
 	virtual size_t getChildrenCount() const;
@@ -398,7 +398,7 @@ protected:
 	ENode *		m_pParent;
 	D2D1::Matrix3x2F	m_MatriInitial;
 	D2D1::Matrix3x2F	m_MatriFinal;
-	EVector<ENode*>		m_vChildren;
+	std::vector<ENode*>		m_vChildren;
 };
 
 
@@ -855,7 +855,7 @@ public:
 
 protected:
 	bool m_bEnable;
-	EVector<EButton*> m_vButtons;
+	std::vector<EButton*> m_vButtons;
 };
 
 }
\ No newline at end of file
diff --git a/Easy2D/etypedef.h b/Easy2D/etypedef.h
deleted file mode 100644
index 1728a854..00000000
--- a/Easy2D/etypedef.h
+++ /dev/null
@@ -1,169 +0,0 @@
-#pragma once
-#include <Windows.h>
-#include <string>
-#include <vector>
-#include <functional>
-
-namespace e2d
-{
-
-struct EPoint
-{
-	float x;
-	float y;
-
-	EPoint()
-	{
-		x = 0;
-		y = 0;
-	}
-
-	EPoint(float x, float y)
-	{
-		this->x = x;
-		this->y = y;
-	}
-
-	EPoint operator + (EPoint const & p)
-	{
-		return EPoint(x + p.x, y + p.y);
-	}
-
-	EPoint operator - (EPoint const & p)
-	{
-		return EPoint(x - p.x, y - p.y);
-	}
-
-	EPoint operator * (float const & value)
-	{
-		return EPoint(x * value, y * value);
-	}
-
-	EPoint operator / (float const & value)
-	{
-		return EPoint(x / value, y / value);
-	}
-};
-
-struct ESize
-{
-	float width;
-	float height;
-
-	ESize()
-	{
-		width = 0;
-		height = 0;
-	}
-
-	ESize(float width, float height)
-	{
-		this->width = width;
-		this->height = height;
-	}
-
-	ESize operator + (ESize const & size)
-	{
-		return ESize(width + size.width, height + size.height);
-	}
-
-	ESize operator - (ESize const & size)
-	{
-		return ESize(width - size.width, height - size.height);
-	}
-
-	ESize operator * (float const & value)
-	{
-		return ESize(width * value, height * value);
-	}
-
-	ESize operator / (float const & value)
-	{
-		return ESize(width / value, height / value);
-	}
-};
-
-
-struct EWindowStyle
-{
-	LPCTSTR m_pIconID;	/* 程序图标 ID */
-	bool m_bNoClose;	/* 禁用关闭按钮 */
-	bool m_bNoMiniSize;	/* 禁用最小化按钮 */
-	bool m_bTopMost;	/* 窗口置顶 */
-
-	EWindowStyle()
-	{
-		m_pIconID = 0;
-		m_bNoClose = false;
-		m_bNoMiniSize = false;
-		m_bTopMost = false;
-	}
-
-	EWindowStyle(
-		LPCTSTR pIconID
-	)
-	{
-		m_pIconID = pIconID;
-		m_bNoClose = false;
-		m_bNoMiniSize = false;
-		m_bTopMost = false;
-	}
-
-	EWindowStyle(
-		LPCTSTR pIconID,
-		bool bNoClose,
-		bool bNoMiniSize,
-		bool bTopMost
-	)
-	{
-		m_pIconID = pIconID;
-		m_bNoClose = bNoClose;
-		m_bNoMiniSize = bNoMiniSize;
-		m_bTopMost = bTopMost;
-	}
-};
-
-// 二维向量
-typedef EPoint EVec;
-
-// 字符串
-typedef std::wstring EString;
-
-// Vector 容器
-template<typename T>
-using EVector = std::vector<T>;
-
-
-class ENode;
-
-// 定时器回调函数（参数为该定时器被调用的次数，从 0 开始）
-typedef std::function<void(int)> TIMER_CALLBACK;
-
-// 按钮点击回调函数
-typedef std::function<void()> BUTTON_CLICK_CALLBACK;
-
-// 按键消息监听回调函数
-typedef std::function<void()> KEY_LISTENER_CALLBACK;
-
-// 鼠标消息监听回调函数
-typedef std::function<void()> MOUSE_LISTENER_CALLBACK;
-
-// 鼠标点击消息监听回调函数（参数为点击位置）
-typedef std::function<void(EPoint mousePos)> MOUSE_CLICK_LISTENER_CALLBACK;
-
-// 鼠标按下消息监听回调函数（参数为按下位置）
-typedef MOUSE_CLICK_LISTENER_CALLBACK  MOUSE_PRESS_LISTENER_CALLBACK;
-
-// 鼠标双击消息监听回调函数（参数为双击位置）
-typedef MOUSE_CLICK_LISTENER_CALLBACK  MOUSE_DBLCLK_LISTENER_CALLBACK;
-
-// 鼠标拖动消息监听回调函数（参数为拖动前位置和拖动后位置）
-typedef std::function<void(EPoint begin, EPoint end)> MOUSE_DRAG_LISTENER_CALLBACK;
-
-// 物理世界消息监听器回调函数
-typedef std::function<void()> PHYSICS_LISTENER_CALLBACK;
-
-// 碰撞消息监听器回调函数
-typedef PHYSICS_LISTENER_CALLBACK  COLLISION_LISTENER_CALLBACK;
-
-}
\ No newline at end of file