ActiveX控件的问题。。

sumingnan

array大哥，我是借鉴你的那个OSG跟ActiveX控件结合的例子做了修改，但是我在IE9.0下调试是可以通过，但是在关闭页面时会弹出一个异常出来，如果我读的是网络上的图片时就会出现这个问题，如果读的是本地的图片就不会出现这个异常，不知道您有没有遇到这种问题，下面是我抛出的异常：

我大概程序流程是：网络上js函数调用控件里面的函数，将一些图片的URL传入控件，然后将它显示，如果有单击的话，传一些信息到JS函数，下面的主要代码：
接口函数：

1. 
   
2. void CpictureCtrl::input(BSTR m_str)
   
3. {
   
4. _bstr_t bstr_t(m_str);
   
5. std::string str(bstr_t);
   
6. mOSG->analysis(str);
   
7. }
   

复制代码

我在创建的时候是这样设置：

1. 
   
2. int CpictureCtrl::OnCreate(LPCREATESTRUCT lpCreateStruct)
   
3. {
   
4. if (CSafeOleControl::OnCreate(lpCreateStruct) == -1)
   
5.   return -1;
   
6. // TODO:  在此添加您专用的创建代码
   
7. mOSG = new cOSG(m_hWnd);
   
8. mOSG->Init();
   
9. mThreadHandle = (HANDLE)_beginthread(&cOSG::Render, 0, mOSG);
   
10. return 0;
    
11. }
    

复制代码

下面是关于cOSG这个类的主要方法：

1. 
   
2. cOSG::cOSG(HWND hWnd) :
   
3. m_hWnd(hWnd)
   
4. {
   
5. // 创建一个视图
   
6. mViewer = new osgViewer::Viewer();
   
7. m_clearnode = new osg::ClearNode;
   
8. mRoot  = new osg::Group;
   
9. m_width = 0;
   
10. m_height = 0;
    
11. }
    
12. cOSG::~cOSG()
    
13. {
    
14. mViewer->setDone(true);
    
15. Sleep(1000);
    
16. mViewer->stopThreading();
    
17. if(mViewer)
    
18.   delete mViewer;
    
19. }
    
20. void cOSG::analysis(std::string name)
    
21. {
    
22. int i, start, end, j;
    
23. int num = 0;
    
24. std::string str, str1, str2;
    
25. if(name == "")
    
26.   return;
    
27. j = name.find(',');
    
28. assert(j);
    
29. str = name.substr(0, j);
    
30. num = StringToInt(str, 0, j);
    
31. mPicture->setNum(num);
    
32. for(i = 0; i < num; i++)
    
33. {
    
34.   //id号
    
35.   start = j + 1;
    
36.   end = name.find(',', start);
    
37.   if(end == -1)
    
38.    return;
    
39.   str = name.substr(start, end - start);
    
40.    
    
41.   //图片name
    
42.   start = end + 1;
    
43.   end = name.find(',', start);
    
44.   if(end == -1)
    
45.    return;
    
46.   str1 = name.substr(start, end - start);
    
47.   //图片url
    
48.   start = end + 1;
    
49.   end = name.find(',', start);
    
50.   if(i == num - 1)
    
51.   {
    
52.    str2 = name.substr(start, name.size());
    
53.   }
    
54.   else
    
55.   {
    
56.    if(end == -1)
    
57.     return;
    
58.    str2 = name.substr(start, end - start);
    
59.   }
    
60.   j = end;
    
61.   mPicture->setName(i, str, str1, str2);
    
62. }
    
63. mPicture->begin(mRoot.get());
    
64. mViewer->getCameraManipulator()->computeHomePosition();
    
65. mViewer->getCameraManipulator()->home( 0.0 );
    
66. }
    
67. int cOSG::StringToInt(std::string str, int start, int end)
    
68. {
    
69. int num = 0;
    
70. int j = 1;
    
71. for(int i = start; i < end; i++)
    
72. {
    
73.   num = num * j + (str[i] - '0');
    
74.   j = j * 10;
    
75. }
    
76. return num;
    
77. }
    
78. 
    
79. void cOSG::InitCameraConfig(void)
    
80. {
    
81. // Local Variable to hold window size data
    
82. RECT rect;
    
83. // Add a Stats Handler to the viewer
    
84. // mViewer->addEventHandler(new osgViewer::StatsHandler);  
    
85. // Get the current window size
    
86. // Get the current window size
    
87. ::GetWindowRect(m_hWnd, &rect);
    
88. // Init the GraphicsContext Traits
    
89. osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
    
90. // Init the Windata Variable that holds the handle for the Window to display OSG in.
    
91. osg::ref_ptr<osg::Referenced> windata = new osgViewer::GraphicsWindowWin32::WindowData(m_hWnd);
    
92. // Setup the traits parameters
    
93. traits->x = 0;
    
94. traits->y = 0;
    
95. /*traits->width = rect.right - rect.left;
    
96. traits->height = rect.bottom - rect.top;*/
    
97. traits->width = 1440;
    
98. traits->height = 768;
    
99. traits->windowDecoration = false;
    
100. traits->doubleBuffer = true;
     
101. traits->sharedContext = 0;
     
102. traits->setInheritedWindowPixelFormat = true;
     
103. traits->inheritedWindowData = windata;
     
104. // Create the Graphics Context
     
105. osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits.get());
     
106. if(gc.valid())
     
107. {
     
108.   //osg::notify(osg::INFO)<<"GraphicsWindow has been created successfully."<<std::endl;
     
109.   //清除窗口颜色及清除颜色和深度缓冲
     
110.   gc->setClearColor(osg::Vec4f(0.2f,0.2f,0.6f,1.0f));
     
111.   gc->setClearMask(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
     
112. }
     
113. else
     
114. {
     
115.   //osg::notify(osg::NOTICE)<<" GraphicsWindow has not been created successfully."<<std::endl;
     
116. }
     
117. double fovy,aspectRatio,zNear,zFar;
     
118. mViewer->getCamera()->getProjectionMatrixAsPerspective(fovy,aspectRatio,zNear,zFar);
     
119. double newAspectRatio = double(traits->width)/double(traits->height);
     
120. double aspectRatioChange = newAspectRatio/aspectRatio;
     
121. mViewer->getCamera()->setClearColor(osg::Vec4(0.8, 0.8, 0.8, 1.0));
     
122. if(aspectRatioChange != 1.0)
     
123. {
     
124.   //设置投影矩阵
     
125.   mViewer->getCamera()->getProjectionMatrix() *= osg::Matrix::scale(1.0/aspectRatioChange,1.0,1.0);
     
126. }
     
127. // Set the viewport for the Camera
     
128. mViewer->getCamera()->setViewport(new osg::Viewport(traits->x, traits->y, traits->width, traits->height));
     
129. //设置图形环境
     
130. mViewer->getCamera()->setGraphicsContext(gc.get());
     
131. mViewer->setCameraManipulator(new osgGA::TrackballManipulator);
     
132. mViewer->setThreadingModel(osgViewer::Viewer::SingleThreaded);
     
133. // Add the Camera Manipulator to the Viewer
     
134. mViewer->setCameraManipulator(new Manipulator);
     
135. mViewer->addEventHandler(new Pickhandle);
     
136. ////
     
137. mPicture = new osgPicture(traits->width, traits->height);
     
138. //analysis("1,1,name,http://192.168.1.105:8022/Artwork/ArtImg/花鸟画.jpg");
     
139. osgUtil::Optimizer optimizer;
     
140. optimizer.optimize(mRoot);
     
141. // Set the Scene Data
     
142. mViewer->setSceneData(mRoot.get());
     
143. // Realize the Viewer
     
144. mViewer->realize();
     
145. }
     

复制代码

各位能不能帮我看一下，这个问题一直困恼着我。。在IE系列的浏览器下关闭的时候都会弹出一个异常。。。

array

调试吧。。。然后观察堆栈的值。。。

sumingnan

好的。看来只有多调试，才能发现问题的所在了。。

yugang2010

回复 3# sumingnan


    是不是因为加载的模型过大，渲染过程中加载导致加载失败。你自己定义个线程，当加载模型的时候关闭渲染线程，加载函数结束后再开启。你试试。。。。