class CMyWnd:pubilc CWnd(){

WPFContainer m_WpfDT;　　// 在Design Time下管理WPFContainer

};

ref class WPFContainer{　　// 这个类需要在Ctrl类里通过gcnew创建出来

HwndSource^ m_pHwndSource;　　// WPF对象会显示在这上面

HwndSourceParameters^ m_sourceParams;　　// 用于初始化HwndSource

Assembly^ m_pCtrlAssem;　　　　// WPF对象的Assembly

WPFSample^ m_WpfObj;　　　　// WPF对象

…　　// 还有一些属性，我们后续再说

};

Type^ wpfType = m_pCtrlAssem->GetType(_T(“WPFSample”));

if (wpfType == nullptr){…}　　// 错误处理

m_ObjWpf = (WFSample^)Activator::CreateInstance(wpfType);　　// 创建WPF对象

CClientDC dc(NULL);

CRect rcBoundsDP(rcBounds);

CRect rcBitmap(0, 0, rcBoundsDP.Width(), rcBoundsDP.Height());

if (!memDC.CreateCompatibleDC(&dc)){return;}　　// 错误处理

// 创建一个Bitmap

bool bSizeChanged = (m_rectLast!=rcBitmap);　　// 判断是否改变大小了，是否需要resize

if (!m_Bitmap.GetSafeHandle() || bSizeChanged){

if (m_Bitmap.GetSafeHandle()){m_Bitmap.DeleteObject();}

m_Bitmap.CreateCompatibleBitmap(&dc, rcBitmap.Width(), rcBitmap.Height());

m_rectLast = rcBitmap;

}

CBitmap *pOldBitmap = memDC.SelectObject(&m_Bitmap);

CBrush brush(RGB(255, 255, 255));

memDC.SetBkColor(0); SetTextColor(xx); FillRect(&rcBitmap, &brush);

memDC.SaveDC();

// 从WPF里获得CDC

CMyWnd对象->DrawWPF(&memDC, rcBounds);　　// 这个对象还会再调WPFContainer去画

memDC.RestoreDC(nSaveDC);

pdc->BitBlt(rcBoundsDP.left, rcBoundsDP.top, rcBoundsDP.Width(), rcBoundsDP.Height(), &memDC, 0, 0, SRCCOPY);

memDC.SelectObject(pOldBitmap);

RenderTargetBimap^ bmpRen;　　// usercontrol to bitmapencoder

BitmapEncoder^ encoder;　　　　// bitmapencoder

MemoryStream^ stream;　　　　// bitmapencoder to stream

Bitmap^ bitmap;　　　　　　　　// get bitmap(c#) from stream

try{　　// c# try catch

m_WpfObj->Resize(w, h);　　// 这个函数是要你们自己实现的，放大缩小功能是必要的，除非大小已经定死了

// get render

System::Windows::Controls::UserControl^ pUC = (System::Windows::Controls::UserControl^)m_WpfObj;

pUC->Width = w; ->Height = h;

pUC->UpdateLayout()　　// let it redraw

bmpRen = gcnew RenderTargetBimap(w, h, 0, 0, PixelFormats::Pbgra32);

bmpRen->Render(pUC);

// get C# bitmap

encoder = gcnew BmpBitmapEncoder();

stream = gcnew MemoryStream();

encoder->Frames->Add(BitmapFrame::Create(bmpRen));

encoder->Save(stream);

bitmap = gcnew Bitmap(stream);

// bitmap from C# to C++

if (pDC){

IntPtr bitmapPtr = bitmap->GetHbitmap();

HBITMAP hBitmap = static_cast<HBITMAP>(bitmapPtr.ToPointer());

// draw cdc

pDC->DrawState(CPoint(0,0), CSize(w, h), hBitmap, DST_BITMAP|DSS_NORMAL);

DleleteObject(hBitmap);

}

}

catch (Exception^ ex){}　　// 异常处理

finally{　　// 释放资源

if (bmpRen !=nullptr) delete bmpRen;

if (encoder != nullptr) delete encoder;

if (stream != nullptr) delete stream;

if (bitmap != nullptr) delete bitmap;

}

m_WPFCtrl->LoadFile(strWpfFilePathName);　　// 让WPF加载并创建出WPF对象，这个过程上文已经提过了

m_sourceParams = gcnew HwndSourceParameters(“WPFSample”);　　// 根据名称创建对象

m_sourceParams->SetPosition(x, y);　　// 设定位置和大小

m_sourceParams->SetSize(w, h);

m_sourceParams->ParentWindow = IntPtr(m_pParentWnd->GetSafeHwnd());　　// m_pParentWnd就是外层的Wnd对象，DT和RT不是一个

m_sourceParams->WindowsStyle = WS_VISIBLE|WS_CHILD;

m_pHwndSource = gcnew HwndSource(*m_sourceParams);

m_pHwndSource->SizeToContent = SizeToContent::WidthAndHeight;

FrameworkElement^ fe = (FrameworkElement^)m_WpfObj;

// 立即在wnd上显示出来

m_pHwndSournce->RootVisual = fe;

m_WpfObj->Resize(w, h);

#define NEW_PROPPAGE_CLASS(n, caption) \

calss CWPFPropPage##n : public CPropertyPageBase {\

enum {IDD = IDD_PROPPAGE_WPFHOLD};

DECLARE_DYNCREATE(CWPFPropPage##n) \

DECLARE_OLECREATE_EX(CWPFPropPage##n) \

public: CWPFPropPage##n():CPropertyPageBase(IDD, caption, n){;}}

#define NEW_PROPPAGE_CLASS_CPP(n, name, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8, ids) \

IMPLEMENT_DYNCREATE(CWPFPropPage##n, CPropertyPageBase) \

IMPLEMENT_OLECREATE_EX(CWPFPr4opPage##n, name, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8) \

BOOL CWPFPropPage##n::CWPFPropPage#nn##Factory::UpdateRegistry(BOOL bRegister) {\

if (bRegister) return AfxOleRegisterPropertyPageClass(AfxGetInstanceHandle(), m_clsid, ids); \

else　　　　　return AfxOleUnregisterClass(m_clsid, NULL); }

// 创建propertypage子类代码

class CPropertyPageBase : public COlePropertyPage

{

UINT m_nPropID;

…

};

// 定义多个page页

NEW_PROPPAGE_CLASS(0, IDS_WPFCTRL_PPG_CAPTION0);

NEW_PROPPAGE_CLASS(1, IDS_WPFCTRL_PPG_CAPTION1);

NEW_PROPPAGE_CLASS(2, IDS_WPFCTRL_PPG_CAPTION2);

…

NEW_PROPPAGE_CLASS(0, “WPFCtrl.WPFCtrlPropPage0”, 0xb3d4a12c, 0x0251, 0x4301, 0xa1, 0xb5, 0x33, 0x32, 0x12, 0x44, 0x4e, 0xc1, IDS_WPFCTRL_PPG0);

… // 太多了就不打了，guid是通过生成器生成好的

下面列几个关键函数

CPropertyPageBase::DoDataExchange(CDataExchange* pDX){

if (pDX->m_bSaveAndValidate) OnApplyNow();　　// 当用户点击 “Apply”按钮时，这里要触发保存函数，告诉WPF控件，保存一下你的所有属性

DDP_PostProcessing(pDX);

}

CPropertyPageBase::OnPropertyModify(WPARAM, LPARAM){SetModifyFlag(TRUE); return S_OK;}　　// 数据改变后通知上层使能Apply按钮

CPropertyPageBase::OnSetPageSite(){

SetpageName(g_WpfObj->GetPageName(m_nPropID));　　// 每个页面有一个名字（显示在标签页上），这个名字需要从WPF控件里得到

}

CPropertyPageBase::OnInitDialog(){

// 参考之前RT和DT代码，将WPF控件中的Page页面显示在CPropertyPageBase上

}

CPropertyPageBase::OnDestroy(){

COlePropertyPage::OnDestroy();

// 释放WPF相应的资源

}