MFC load osg Model

Create an MFC single document project,

OSGObject.h

#pragma once
#include <osgViewer\Viewer>
#include <osgDB\ReadFile>
#include <osgViewer\api\Win32\GraphicsWindowWin32>
#include <osgGA\TrackballManipulator>

#include <osg\Group>

class COSGObject
{
public:
    COSGObject(HWND hWnd);
    ~COSGObject();

    void InitOSG();
    void InitSceneGraph();
    void InitCameraConfig();
    void PreFrameUpdate();
    void PostFrameUpdate();
    static void Render(void* ptr);

    osgViewer::Viewer* getOsgViewer();

private:
    HWND m_hwnd;
    osgViewer::Viewer* mViewer;
    osg::ref_ptr<osg::Group> mRoot;
};

OSGObject.cpp

#pragma once
#include <osgViewer\Viewer>
#include <osgDB\ReadFile>
#include <osgViewer\api\Win32\GraphicsWindowWin32>
#include <osgGA\TrackballManipulator>

#include <osg\Group>

class COSGObject
{
public:
    COSGObject(HWND hWnd);
    ~COSGObject();

    void InitOSG();
    void InitSceneGraph();
    void InitCameraConfig();
    void PreFrameUpdate();
    void PostFrameUpdate();
    static void Render(void* ptr);

    osgViewer::Viewer* getOsgViewer();

private:
    HWND m_hwnd;
    osgViewer::Viewer* mViewer;
    osg::ref_ptr<osg::Group> mRoot;
};

View.h

// This MFC sample source code demonstrates how to use the MFC Microsoft Office Fluent user interface 
 // ( "the Fluent the UI"). This example is only for reference
 // to supplement "Microsoft Foundation Class Reference" and 
 // MFC C ++ library software related electronic documentation that came.  
// copy, use or distribute Fluent UI licensing terms are provided separately.  
// To learn more about the Fluent UI licensing program, please visit 
 //  http://go.microsoft.com/fwlink/?LinkId=238214 .
// 
// Copyright (C) in the Microsoft Corporation
 // All rights reserved. 

// View.h: View class interface
 //
 
#pragma Once 
#include " Doc.h " 
#include " OSGObject.h " 

class View:public CView 
{ 
protected : // only create a sequence of 
    CMFC_OsgEarth20190901View (); 
    the DECLARE_DYNCREATE (View) 

// Characteristics 
public : 
    Doc * the GetDocument () const ; 

// operations 
public : 
    COSGObject * mOsgObj; 
    HANDLE mThreadHandle; 

// rewrite 
public :
     Virtual  void the OnDraw (the CDC * the pDC);   // rewritten to draw the view 
    Virtual BOOL the PreCreateWindow (the CREATESTRUCT & CS);
 protected : 

// implemented
public:
    virtual ~View();
#ifdef _DEBUG
    virtual void AssertValid() const;
    virtual void Dump(CDumpContext& dc) const;
#endif

protected:

// 生成的消息映射函数
protected:
    afx_msg void OnFilePrintPreview();
    afx_msg void OnRButtonUp(UINT nFlags, CPoint point);
    afx_msg void OnContextMenu(CWnd* pWnd, CPoint point);
    DECLARE_MESSAGE_MAP()
public:
    afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);
    afx_msg BOOL OnEraseBkgnd(CDC* pDC);
    afx_msg void OnDestroy();
    virtual void OnInitialUpdate();
};

#ifndef _DEBUG  // View.cpp 中的调试版本
inline Doc* View::GetDocument() const
   { return reinterpret_cast<Doc*>(m_pDocument); }
#endif

View.cpp

// This MFC sample source code demonstrates how to use the MFC Microsoft Office Fluent user interface 
 // ( "the Fluent the UI"). This example is only for reference
 // to supplement "Microsoft Foundation Class Reference" and 
 // MFC C ++ library software related electronic documentation that came.  
// copy, use or distribute Fluent UI licensing terms are provided separately.  
// To learn more about the Fluent UI licensing program, please visit 
 //  http://go.microsoft.com/fwlink/?LinkId=238214 .
// 
// Copyright (C) in the Microsoft Corporation
 // All rights reserved. 

// View.cpp: to achieve the View class
 //
 
#include " stdafx.h " 
// SHARED_HANDLERS can preview thumbnails and search filters handle
 // define ATL project, and share documents and allow the project code. 
#ifndef SHARED_HANDLERS
#endif

#include "Doc.h"
#include "View.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// View

IMPLEMENT_DYNCREATE(View, CView)

BEGIN_MESSAGE_MAP(View, CView)
    ON_WM_CONTEXTMENU()
    ON_WM_RBUTTONUP()
    ON_WM_CREATE()
    ON_WM_ERASEBKGND()
    ON_WM_DESTROY()
END_MESSAGE_MAP()

// View 构造/析构

View::View()
{
    // TODO: 在此处添加构造代码
    mOsgObj = 0;
    mThreadHandle = 0;
}

:: View ~ View () 
{ 
} 

BOOL :: View the PreCreateWindow (the CREATESTRUCT & CS) 
{ 
    // the TODO: here by modifying
     //   modify the CS window class or style the CREATESTRUCT 

    return CView :: the PreCreateWindow (CS); 
} 

/ / View rendering 

void View :: the OnDraw (the CDC * / * the pDC * / ) 
{ 
    Doc * = pDoc the GetDocument (); 
    the ASSERT_VALID (pDoc); 
    IF (! pDoc)
         return ; 

    // the TODO: native data added here drawing code 
} 

void View :: OnRButtonUp (UINT / * nFlags */, CPoint point)
{
    ClientToScreen(&point);
    OnContextMenu(this, point);
}

void View::OnContextMenu(CWnd* /* pWnd */, CPoint point)
{
#ifndef SHARED_HANDLERS
    //theApp.GetContextMenuManager()->ShowPopupMenu(IDR_POPUP_EDIT, point.x, point.y, this, TRUE);
#endif
}


// View 诊断

#ifdef _DEBUG
void View::AssertValid() const
{
    CView::AssertValid();
}

void View::Dump(CDumpContext& dc) const
{ 
    CView :: the Dump (DC); 
} 

Doc * :: View the GetDocument () const  // non-debug version inlined 
{ 
    the ASSERT (m_pDocument -> IsKindOf (the RUNTIME_CLASS (Doc)));
     return (Doc * ) m_pDocument; 
} 
#endif  // _DEBUG 


// View message handler 


int View :: the OnCreate (lPCREATESTRUCT lpCreateStruct) 
{ 
    IF (CView :: the OnCreate (lpCreateStruct) == - . 1 )
         return - . 1 ; 

    // the TODO: Add your this specific create code 
    mOsgObj = new new COSGObject (m_hWnd); 


    return 0 ; 
} 


BOOL :: View the OnEraseBkgnd (the CDC * the pDC) 
{ 
    // the TODO: this addition message handler code, and / or invoke the default value 
    IF ( 0 == mOsgObj) 
    { 
        return CView :: the OnEraseBkgnd (the pDC); 
    } 
    the else  
    { 
        return FALSE; 
    } 
    return CView :: the OnEraseBkgnd (the pDC); 
} 


void View :: the OnDestroy () 
{ 
    CView :: the OnDestroy (); 

    // the TODO: here add a message handler code 
    IF (! mOsgObj = 0 ) 
    { 
        Delete mOsgObj; 
    }
    The WaitForSingleObject (mThreadHandle, 1000 ); 
} 


void View :: the OnInitialUpdate () 
{ 
    CView :: the OnInitialUpdate (); 

    // the TODO: add this special code and / or call the base class 
    mOsgObj-> InitOSG (); 
    mThreadHandle = (HANDLE) the _beginthread (:: & COSGObject the Render, 0 , mOsgObj); 

}

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