智能指针的assign函数如何关联?

颂鼎

1.   
   
2. #include <osg/Geode>
   
3. #include <osgViewer/Viewer>
   
4. #include <osg/StateSet>
   
5. #include <osg/Camera>
   
6. #include <osg/MatrixTransform>
   
7. #include <osg/Switch>
   
8. #pragma comment(lib,"OpenThreadsd.lib")
   
9. #pragma comment(lib,"osgd.lib")
   
10. #pragma comment(lib,"osgDBd.lib")
    
11. #pragma comment(lib,"osgAPExd.lib")
    
12. #pragma comment(lib,"osgGAd.lib")
    
13. #pragma comment(lib,"osgUtild.lib")
    
14. #pragma comment(lib,"osgTextd.lib")
    
15. #pragma comment(lib,"osgSimd.lib")
    
16. #pragma comment(lib,"osgViewerd.lib")
    
17. using namespace osg;
    
18. 
    
19. class cbase :public Switch{
    
20. public:
    
21.         cbase(){};
    
22.         virtual ~cbase(){};
    
23. 
    
24. };
    
25. 
    
26. class sub : public cbase{
    
27. public:
    
28.         sub(){};
    
29.         ~sub(){};
    
30.         void Update(){};
    
31. };
    
32. 
    
33. int _tmain(int argc, _TCHAR* argv[])
    
34. {
    
35.         osg::ref_ptr<cbase> pBase = new sub;
    
36.         sub* pSub = dynamic_cast<sub*>(pBase.Release());
    
37.        
    
38.         return 0;
    
39. }
    
40. 
    
41. 
    

复制代码

颂鼎

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~