diff --git a/cocos2dx/cocoa/CCDictionary.h b/cocos2dx/cocoa/CCDictionary.h
index 1a1763394e..63f91c81a2 100644
--- a/cocos2dx/cocoa/CCDictionary.h
+++ b/cocos2dx/cocoa/CCDictionary.h
@@ -53,7 +53,7 @@ class Dictionary;
  *  {
  *      const char*key = pElement->getStrKey();
  *      // You certainly know the type of value, so we assume that it's a Sprite.
- *      Sprite* pSprite = (Sprite*)pElement->getObject();
+ *      Sprite* pSprite = static_cast<Sprite*>(pElement->getObject());
  *      // ......
  *  }
  *  @endcode
@@ -138,7 +138,7 @@ public:
  *        It's also safe to remove elements while traversing.
  */
 #define CCDICT_FOREACH(__dict__, __el__) \
-    DictElement* pTmp##__dict__##__el__ = NULL; \
+    DictElement* pTmp##__dict__##__el__ = nullptr; \
     if (__dict__) \
     HASH_ITER(hh, (__dict__)->_elements, __el__, pTmp##__dict__##__el__)
 
diff --git a/cocos2dx/sprite_nodes/CCAnimationCache.cpp b/cocos2dx/sprite_nodes/CCAnimationCache.cpp
index 446609168b..7f1e9c1a58 100644
--- a/cocos2dx/sprite_nodes/CCAnimationCache.cpp
+++ b/cocos2dx/sprite_nodes/CCAnimationCache.cpp
@@ -97,8 +97,8 @@ void AnimationCache::parseVersion1(Dictionary* animations)
     DictElement* pElement = NULL;
     CCDICT_FOREACH(animations, pElement)
     {
-        Dictionary* animationDict = (Dictionary*)pElement->getObject();
-        Array* frameNames = (Array*)animationDict->objectForKey("frames");
+        Dictionary* animationDict = static_cast<Dictionary*>(pElement->getObject());
+        Array* frameNames = static_cast<Array*>(animationDict->objectForKey("frames"));
         float delay = animationDict->valueForKey("delay")->floatValue();
         Animation* animation = NULL;
 
@@ -151,12 +151,12 @@ void AnimationCache::parseVersion2(Dictionary* animations)
     CCDICT_FOREACH(animations, pElement)
     {
         const char* name = pElement->getStrKey();
-        Dictionary* animationDict = (Dictionary*)pElement->getObject();
+        Dictionary* animationDict = static_cast<Dictionary*>(pElement->getObject());
 
         const String* loops = animationDict->valueForKey("loops");
         bool restoreOriginalFrame = animationDict->valueForKey("restoreOriginalFrame")->boolValue();
 
-        Array* frameArray = (Array*)animationDict->objectForKey("frames");
+        Array* frameArray = static_cast<Array*>(animationDict->objectForKey("frames"));
 
         if ( frameArray == NULL ) {
             CCLOG("cocos2d: AnimationCache: Animation '%s' found in dictionary without any frames - cannot add to animation cache.", name);
diff --git a/cocos2dx/sprite_nodes/CCSpriteFrameCache.cpp b/cocos2dx/sprite_nodes/CCSpriteFrameCache.cpp
index d5da72e357..261228a6bb 100644
--- a/cocos2dx/sprite_nodes/CCSpriteFrameCache.cpp
+++ b/cocos2dx/sprite_nodes/CCSpriteFrameCache.cpp
@@ -103,9 +103,9 @@ void SpriteFrameCache::addSpriteFramesWithDictionary(Dictionary* dictionary, Tex
     DictElement* pElement = NULL;
     CCDICT_FOREACH(framesDict, pElement)
     {
-        Dictionary* frameDict = (Dictionary*)pElement->getObject();
+        Dictionary* frameDict = static_cast<Dictionary*>(pElement->getObject());
         std::string spriteFrameName = pElement->getStrKey();
-        SpriteFrame* spriteFrame = (SpriteFrame*)_spriteFrames->objectForKey(spriteFrameName);
+        SpriteFrame* spriteFrame = static_cast<SpriteFrame*>(_spriteFrames->objectForKey(spriteFrameName));
         if (spriteFrame)
         {
             continue;
@@ -299,7 +299,7 @@ void SpriteFrameCache::removeUnusedSpriteFrames(void)
     DictElement* pElement = NULL;
     CCDICT_FOREACH(_spriteFrames, pElement)
     {
-        SpriteFrame* spriteFrame = (SpriteFrame*)pElement->getObject();
+        SpriteFrame* spriteFrame = static_cast<SpriteFrame*>(pElement->getObject());
         if( spriteFrame->retainCount() == 1 ) 
         {
             CCLOG("cocos2d: SpriteFrameCache: removing unused frame: %s", pElement->getStrKey());
@@ -360,7 +360,7 @@ void SpriteFrameCache::removeSpriteFramesFromFile(const char* plist)
 
 void SpriteFrameCache::removeSpriteFramesFromDictionary(Dictionary* dictionary)
 {
-    Dictionary* framesDict = (Dictionary*)dictionary->objectForKey("frames");
+    Dictionary* framesDict = static_cast<Dictionary*>(dictionary->objectForKey("frames"));
     Array* keysToRemove = Array::create();
 
     DictElement* pElement = NULL;
@@ -383,7 +383,7 @@ void SpriteFrameCache::removeSpriteFramesFromTexture(Texture2D* texture)
     CCDICT_FOREACH(_spriteFrames, pElement)
     {
         string key = pElement->getStrKey();
-        SpriteFrame* frame = (SpriteFrame*)_spriteFrames->objectForKey(key.c_str());
+        SpriteFrame* frame = static_cast<SpriteFrame*>(_spriteFrames->objectForKey(key.c_str()));
         if (frame && (frame->getTexture() == texture))
         {
             keysToRemove->addObject(String::create(pElement->getStrKey()));
diff --git a/cocos2dx/support/CCProfiling.cpp b/cocos2dx/support/CCProfiling.cpp
index 1aac95db38..bb259124f3 100644
--- a/cocos2dx/support/CCProfiling.cpp
+++ b/cocos2dx/support/CCProfiling.cpp
@@ -84,7 +84,7 @@ void Profiler::displayTimers()
     DictElement* pElement = NULL;
     CCDICT_FOREACH(_activeTimers, pElement)
     {
-        ProfilingTimer* timer = (ProfilingTimer*)pElement->getObject();
+        ProfilingTimer* timer = static_cast<ProfilingTimer*>(pElement->getObject());
         CCLog("%s", timer->description());
     }
 }
diff --git a/cocos2dx/textures/CCTextureCache.cpp b/cocos2dx/textures/CCTextureCache.cpp
index 56591d4c01..8aee499d15 100644
--- a/cocos2dx/textures/CCTextureCache.cpp
+++ b/cocos2dx/textures/CCTextureCache.cpp
@@ -538,7 +538,7 @@ void TextureCache::removeUnusedTextures()
     CCDICT_FOREACH(_textures, pElement)
     {
         CCLOG("cocos2d: TextureCache: texture: %s", pElement->getStrKey());
-        Texture2D *value = (Texture2D*)pElement->getObject();
+        Texture2D *value = static_cast<Texture2D*>(pElement->getObject());
         if (value->retainCount() == 1)
         {
             CCLOG("cocos2d: TextureCache: removing unused texture: %s", pElement->getStrKey());
@@ -557,7 +557,7 @@ void TextureCache::removeUnusedTextures()
         CCDICT_FOREACH(_textures, pElement)
         {
             CCLOG("cocos2d: TextureCache: texture: %s", pElement->getStrKey());
-            Texture2D *value = (Texture2D*)pElement->getObject();
+            Texture2D *value = static_cast<Texture2D*>(pElement->getObject());
             if (value->retainCount() == 1)
             {
                 elementToRemove.push_back(pElement);
@@ -615,7 +615,7 @@ void TextureCache::dumpCachedTextureInfo()
     DictElement* pElement = NULL;
     CCDICT_FOREACH(_textures, pElement)
     {
-        Texture2D* tex = (Texture2D*)pElement->getObject();
+        Texture2D* tex = static_cast<Texture2D*>(pElement->getObject());
         unsigned int bpp = tex->bitsPerPixelForFormat();
         // Each texture takes up width * height * bytesPerPixel bytes.
         unsigned int bytes = tex->getPixelsWide() * tex->getPixelsHigh() * bpp / 8;
diff --git a/extensions/CCArmature/utils/CCSpriteFrameCacheHelper.cpp b/extensions/CCArmature/utils/CCSpriteFrameCacheHelper.cpp
index 1bc61acf92..2421ae4349 100644
--- a/extensions/CCArmature/utils/CCSpriteFrameCacheHelper.cpp
+++ b/extensions/CCArmature/utils/CCSpriteFrameCacheHelper.cpp
@@ -87,7 +87,7 @@ void SpriteFrameCacheHelper::addSpriteFrameFromDict(Dictionary *dictionary, Text
     DictElement *pElement = NULL;
     CCDICT_FOREACH(framesDict, pElement)
     {
-        Dictionary *frameDict = (Dictionary *)pElement->getObject();
+        Dictionary *frameDict = static_cast<Dictionary*>(pElement->getObject());
         std::string spriteFrameName = pElement->getStrKey();
 
         _display2ImageMap[spriteFrameName] = imagePath;
diff --git a/extensions/CCBReader/CCBAnimationManager.cpp b/extensions/CCBReader/CCBAnimationManager.cpp
index 60e881641a..7adacc5039 100644
--- a/extensions/CCBReader/CCBAnimationManager.cpp
+++ b/extensions/CCBReader/CCBAnimationManager.cpp
@@ -742,7 +742,7 @@ void CCBAnimationManager::runAnimationsForSequenceIdTweenDuration(int nSeqId, fl
     DictElement* pElement = NULL;
     CCDICT_FOREACH(mNodeSequences, pElement)
     {
-        Node *node = (Node*)pElement->getIntKey();
+        Node *node = reinterpret_cast<Node*>(pElement->getIntKey());
         node->stopAllActions();
         
         // Refer to CCBReader::readKeyframe() for the real type of value
@@ -758,7 +758,7 @@ void CCBAnimationManager::runAnimationsForSequenceIdTweenDuration(int nSeqId, fl
             CCDICT_FOREACH(seqNodeProps, pElement1)
             {
                 const char *propName = pElement1->getStrKey();
-                CCBSequenceProperty *seqProp = (CCBSequenceProperty*)seqNodeProps->objectForKey(propName);
+                CCBSequenceProperty *seqProp = static_cast<CCBSequenceProperty*>(seqNodeProps->objectForKey(propName));
                 seqNodePropNames.insert(propName);
                 
                 setFirstFrame(node, seqProp, fTweenDuration);
diff --git a/extensions/CCBReader/CCBReader.cpp b/extensions/CCBReader/CCBReader.cpp
index 832e65cb71..bead756bac 100644
--- a/extensions/CCBReader/CCBReader.cpp
+++ b/extensions/CCBReader/CCBReader.cpp
@@ -294,7 +294,7 @@ Node* CCBReader::readNodeGraphFromData(Data *pData, Object *pOwner, const Size &
     CCDICT_FOREACH(animationManagers, pElement)
     {
         Node* pNode = (Node*)pElement->getIntKey();
-        CCBAnimationManager* manager = (CCBAnimationManager*)animationManagers->objectForKey((intptr_t)pNode);
+        CCBAnimationManager* manager = static_cast<CCBAnimationManager*>(animationManagers->objectForKey((intptr_t)pNode));
         pNode->setUserObject(manager);
 
         if (jsControlled)
@@ -714,11 +714,11 @@ Node * CCBReader::readNodeGraph(Node * pParent) {
                     DictElement* pElement;
                     CCDICT_FOREACH(pCustomPropeties, pElement)
                     {
-                        customAssigned = targetAsCCBMemberVariableAssigner->onAssignCCBCustomProperty(target, pElement->getStrKey(), (CCBValue*)pElement->getObject());
+                        customAssigned = targetAsCCBMemberVariableAssigner->onAssignCCBCustomProperty(target, pElement->getStrKey(), static_cast<CCBValue*>(pElement->getObject()));
 
                         if(!customAssigned && this->mCCBMemberVariableAssigner != NULL)
                         {
-                            customAssigned = this->mCCBMemberVariableAssigner->onAssignCCBCustomProperty(target, pElement->getStrKey(), (CCBValue*)pElement->getObject());
+                            customAssigned = this->mCCBMemberVariableAssigner->onAssignCCBCustomProperty(target, pElement->getStrKey(), static_cast<CCBValue*>(pElement->getObject()));
                         }
                     }
                 }
diff --git a/extensions/GUI/CCControlExtension/CCControlButton.cpp b/extensions/GUI/CCControlExtension/CCControlButton.cpp
index 5f8d234e6e..3f2dd8b704 100644
--- a/extensions/GUI/CCControlExtension/CCControlButton.cpp
+++ b/extensions/GUI/CCControlExtension/CCControlButton.cpp
@@ -251,7 +251,7 @@ void ControlButton::setPreferredSize(Size size)
         DictElement * item = NULL;
         CCDICT_FOREACH(_backgroundSpriteDispatchTable, item)
         {
-            Scale9Sprite* sprite = (Scale9Sprite*)item->getObject();
+            Scale9Sprite* sprite = static_cast<Scale9Sprite*>(item->getObject());
             sprite->setPreferredSize(size);
         }
     }
@@ -719,7 +719,7 @@ void ControlButton::setOpacity(GLubyte opacity)
     DictElement * item = NULL;
     CCDICT_FOREACH(_backgroundSpriteDispatchTable, item)
     {
-        Scale9Sprite* sprite = (Scale9Sprite*)item->getObject();
+        Scale9Sprite* sprite = static_cast<Scale9Sprite*>(item->getObject());
         sprite->setOpacity(opacity);
     }
 }
@@ -736,7 +736,7 @@ void ControlButton::setColor(const Color3B & color)
 	DictElement * item = NULL;
     CCDICT_FOREACH(_backgroundSpriteDispatchTable, item)
     {
-        Scale9Sprite* sprite = (Scale9Sprite*)item->getObject();
+        Scale9Sprite* sprite = static_cast<Scale9Sprite*>(item->getObject());
         sprite->setColor(color);
     }
 }