使用 C++ .NET 和 MFC 嵌入并自动化 Word 文档_mfc内嵌文本编辑-优快云博客

本文介绍如何使用 Visual C++.NET 在单文档界面 (SDI) Microsoft 基础类 (MFC) 应用程序中将 Word 文档嵌入 View 对象。

创建嵌入 Word 文档的 MFC 应用程序

下列步骤介绍如何嵌入一个 Word 文档并自动化文档将数据添加到单元格。

启动 Microsoft Visual Studio .NET。在文件菜单上，单击新建，然后单击项目。在项目类型下面单击 Visual C++ 项目，然后单击模板下面的 MFC 应用程序。将该项目命名为 Embed_Word。
显示 MFC 应用程序向导时，请按照下列步骤操作：
1. 单击应用程序类型，然后选择单文档。
2. 单击复合文档支持，然后选择容器。
3. 单击完成以接受所有其他默认设置。
从 Word 对象库添加接口。为此，请按照下列步骤操作：
1. 在项目菜单上，单击添加类。
2. 从模板列表中选择类型库中的 MFC 类，然后单击打开。将显示“从类型库添加类向导”。
3. 在可用类型库列表中，找到 Microsoft Word 版本 对象库。 Word 2000 的版本是 9.0，Word 2002 的版本是 10.0。
4. 添加下面的接口：
  - _Document
  - Range
5. 单击完成。
将下面一行代码添加到 Cntritem.h 中，用作 CEmbed_WordCntrItem 类的公共成员函数：
```
LPDISPATCH GetIDispatch();
```

将 GetIDispatch 方法添加到 Cntritem.cpp 中，如下所示：

/*******************************************************************
*   This method returns the IDispatch* for the application that is linked to
*   this container.
********************************************************************/ 
LPDISPATCH CEmbed_WordCntrItem::GetIDispatch()
{
	//The this and m_lpObject pointers must be valid for this function
	//to work correctly. The m_lpObject is the IUnknown pointer to
	// this object.
	ASSERT_VALID(this);

	ASSERT(m_lpObject != NULL);

	LPUNKNOWN lpUnk = m_lpObject;

	//The embedded application must be running in order for the rest
	//of the function to work.
	Run();

	//QI for the IOleLink interface of m_lpObject.
	LPOLELINK lpOleLink = NULL;
	if (m_lpObject->QueryInterface(IID_IOleLink,
		(LPVOID FAR*)&lpOleLink) == NOERROR)
	{
		ASSERT(lpOleLink != NULL);
		lpUnk = NULL;

		//Retrieve the IUnknown interface to the linked application.
		if (lpOleLink->GetBoundSource(&lpUnk) != NOERROR)
		{
			TRACE0("Warning: Link is not connected!\n");
			lpOleLink->Release();
			return NULL;
		}
		ASSERT(lpUnk != NULL);
	}

	//QI for the IDispatch interface of the linked application.
	LPDISPATCH lpDispatch = NULL;
	if (lpUnk->QueryInterface(IID_IDispatch, (LPVOID FAR*)&lpDispatch)
		!=NOERROR)
	{
		TRACE0("Warning: does not support IDispatch!\n");
		return NULL;
	}

	//After you verify that it is valid, return the IDispatch
	//interface to the caller.
	ASSERT(lpDispatch != NULL);
	return lpDispatch;
}

将下面一行代码添加到 Embed_wordview.h 中，用作 CEmbed_WordView 类的公共方法：
```
void EmbedAutomateWord();
```

将下面一行代码添加到 Embed_wordview.cpp 中：

#include "CDocument0.h"
#include "CRange.h"

/********************************************************************
*   This method encapsulates the process of embedding an Word
*   document in a View object and automating that document to add
*   some text.
********************************************************************/ 
void CEmbed_WordView::EmbedAutomateWord()
{
   //Change the cursor so that the user knows that something exciting is going
   //on.
   BeginWaitCursor();

   CEmbed_WordCntrItem* pItem = NULL;
   TRY
   {
   	//Get the document that is associated with this view, and be sure that it is
   	//valid.
   	CEmbed_WordDoc* pDoc = GetDocument();
   	ASSERT_VALID(pDoc);

   	//Create a new item associated with this document, and be sure that it is
   	//valid.
   	pItem = new CEmbed_WordCntrItem(pDoc);
   	ASSERT_VALID(pItem);

   	// Get the Class ID for the Word document.
   	// This is used in creation.
   	CLSID clsid;
   	if(FAILED(::CLSIDFromProgID(L"Word.document",&clsid)))
   		//Any exception will do. You just need to break out of the
   		//TRY statement.
   		AfxThrowMemoryException();

   	// Create the Word embedded item.
   	if(!pItem->CreateNewItem(clsid))
   		//Any exception will do. You just need to break out of the
   		//TRY statement.
   		AfxThrowMemoryException();

   	//Make sure that the new CContainerItem is valid.
   	ASSERT_VALID(pItem);

   	// Start the server to edit the item.
   	pItem->DoVerb(OLEIVERB_SHOW, this);

   	// As an arbitrary user interface design, this sets the
   	// selection to the last item inserted.
   	m_pSelection = pItem;   // Set selection to the last inserted item.
   	pDoc->UpdateAllViews(NULL);

   	//Query for the dispatch pointer for the embedded object. In
   	//this case, this is the Word document.
   	LPDISPATCH lpDisp;
   	lpDisp = pItem->GetIDispatch();

   	//Add text to the embedded Word document.
   	CDocument0 wdDoc;
   	CRange wdRange;

   	//set CDocument0 wdDoc to use lpDisp, the IDispatch* of the
   	//actual document.
   	wdDoc.AttachDispatch(lpDisp);


   	//Get a CRange object for the document.
   	wdRange = wdDoc.Range(COleVariant( (long)DISP_E_PARAMNOTFOUND, VT_ERROR ),
         COleVariant( (long)DISP_E_PARAMNOTFOUND, VT_ERROR ) );

   	//Fill the range with the string "Hello, World!"
   	wdRange.put_Text( "Hello, World!" );
   }

   //Clean up if something went wrong.
   CATCH(CException, e)
   {
   	if (pItem != NULL)
   	{
   		ASSERT_VALID(pItem);
         pItem->Delete();
   	}
   	AfxMessageBox(IDP_FAILED_TO_CREATE);
   }
   END_CATCH

   	//Set the cursor back to normal so the user knows exciting stuff
   	//is no longer happening.
   	EndWaitCursor();
}

将 Embed_wordview.cpp 中的 CEmbed_WordView::OnInsertObject 的代码替换为以下代码：
```
void CEmbed_WordView::OnInsertObject()
{
	EmbedAutomateWord();
}
```
备注： EmbedAutomateWord 只是 OnInsertObject 的一种特殊情况，它使用户可以从可用 OLE 对象列表中选择对象来插入到应用程序中。您将重写该行为，因为此演示不需要这种行为。