开发环境： win8.1 vs2012 coco2d-x 3.0 alpha1
现在想在 新建的工程里添加：
UILayer* layer = UILayer::create();
UIButton* uiButton = UIButton::create();
等控件时，引入的头文件和命名空间是：
#include “CocosGUI.h”
using namespace gui;
出现链接错误是：
1>HelloWorldScene.obj : error LNK2019: unresolved external symbol “public: __thiscall gui::UIMargin::UIMargin(void)” (??0UIMargin@gui@@QAE@XZ) referenced in function “void __cdecl gui::`dynamic initializer for ‘UIMarginZero’’(void)” (??__EUIMarginZero@gui@@YAXXZ)
1>HelloWorldScene.obj : error LNK2019: unresolved external symbol “public: static class gui::UIButton * __cdecl gui::UIButton::create(void)” (?create@UIButton@gui@@SAPAV12@XZ) referenced in function “public: virtual bool __thiscall HelloWorld::init(void)” (?init@HelloWorld@@UAE_NXZ)
1>HelloWorldScene.obj : error LNK2019: unresolved external symbol “public: static class gui::UILayer * __cdecl gui::UILayer::create(void)” (?create@UILayer@gui@@SAPAV12@XZ) referenced in function “public: virtual bool __thiscall HelloWorld::init(void)” (?init@HelloWorld@@UAE_NXZ)
1>D:\cocos2d-x 3.0\cocos2d-x-3.0alpha1\projects\Cocos2d-x3.0_3\proj.win32\Debug.win32\MyGame.exe : fatal error LNK1120: 3 unresolved externals
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