求助OSG窗口创建的问题

hup

学长毕业了，留的程序该我改了，以前接触OSG不深，所以遇到问题了，代码如下：

1. m_hWndParent = hWnd;
   
2.         first_load=true;
   
3. 
   
4. 
   
5.         Title_text = new  osgText::Text;
   
6.     Title_AirPort_Name=new osgText::Text;
   
7.         Title_energy_type=new osgText::Text;
   
8. 
   
9. 
   
10.         //osg::DisplaySettings::instance()->setNumMultiSamples(8);
    
11.         m_osgRoot = new osg::Group();                                     //场景模型 根 的初始化
    
12.         m_osgViewer = new osgViewer::Viewer();                             //视口 初始化
    
13.        
    
14.         osgViewer::Viewer& viewer1 = *m_osgViewer;
    
15.         osg::GraphicsContext::WindowingSystemInterface* wsi =  osg::GraphicsContext::getWindowingSystemInterface();
    
16.         if (!wsi)
    
17.         {
    
18.                 osg::notify(osg::NOTICE)
    
19.                         <<"Error, no WindowSystemInterface available, cannot create windows."<<std::endl;
    
20.                 return 1;
    
21.         }
    
22.         unsigned int width, height;
    
23.         wsi->getScreenResolution(osg::GraphicsContext::ScreenIdentifier(0), width, height);
    
24.         osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
    
25. 
    
26.         osg::ref_ptr<osg::Referenced> windata = new osgViewer::GraphicsWindowWin32::WindowData(hWnd);
    
27. 
    
28.         RECT rt;
    
29.         GetWindowRect(hWnd,&rt);
    
30.         int wnd_w = rt.right-rt.left;
    
31.         int wnd_h = rt.bottom-rt.top;
    
32.         int maxlen= wnd_w<wnd_h ? wnd_w : wnd_h;
    
33. 
    
34.         traits->x = 0;
    
35.         traits->y = 0;
    
36.         traits->sharedContext = 0;
    
37.         traits->setInheritedWindowPixelFormat = true;
    
38.         traits->inheritedWindowData = windata;
    
39. 
    
40.         traits->red = traits->green = traits->blue = 8;
    
41.         traits->depth = 24;
    
42.         //traits->alpha = 8;       
    
43.         //traits->stencil = 8;
    
44.         traits->doubleBuffer = true;
    
45.         traits->mipMapGeneration = true;
    
46.         traits->sampleBuffers = 0;
    
47.         traits->samples = msp;
    
48.        
    
49. 
    
50.         if (bShowMax)
    
51.         {
    
52.                 traits->x = 0;
    
53.                 traits->y = 0;
    
54.                 traits->width = width;
    
55.                 traits->height = height;
    
56.                 traits->windowDecoration = false;
    
57.         }
    
58.         else
    
59.         {
    
60.                 traits->width = width/2;
    
61.                 traits->height = height/2;
    
62.                 traits->windowDecoration = true;
    
63.         }
    
64. 
    
65.         m_gc = osg::GraphicsContext::createGraphicsContext(traits.get());//[color=Red]这块出的问题[/color]
    
66.         if (m_gc.valid())
    
67.         {
    
68.                 osg::notify(osg::INFO)<<"  GraphicsWindow has been created successfully."<<std::endl;
    
69.                 m_gc->setClearColor(osg::Vec4f(0.2f,0.2f,0.6f,1.0f));
    
70.                 m_gc->setClearMask(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    
71.         }
    
72.         else
    
73.         {
    
74.                 osg::notify(osg::NOTICE)<<"  GraphicsWindow has not been created successfully."<<std::endl;
    
75.                 return false;
    
76.         }

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上面创建OSG窗口代码每次运行到createGraphicsContext(traits.get())会报错“Unhandled exception at 0x7681c42d in AirportEnergy.exe: Microsoft C++ exception: std::__non_rtti_object at memory location 0x0a04f69c..”，可能是空指针或野指针问题，我在调试过程中发现windowName（定义：std::string windowName）属性中出现了Bad Ptr问题，但不知如何解决，因此在此求助，谢谢了