srvritem.cpp

VC技术内幕

// SrvrItem.cpp : implementation of the CEx27aSrvrItem class
//

#include "stdafx.h"
#include "ex27a.h"

#include "ex27aDoc.h"
#include "SrvrItem.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CEx27aSrvrItem implementation

IMPLEMENT_DYNAMIC(CEx27aSrvrItem, COleServerItem)

CEx27aSrvrItem::CEx27aSrvrItem(CEx27aDoc* pContainerDoc)
	: COleServerItem(pContainerDoc, TRUE)
{
	// TODO: add one-time construction code here
	//  (eg, adding additional clipboard formats to the item's data source)
}

CEx27aSrvrItem::~CEx27aSrvrItem()
{
	// TODO: add cleanup code here
}

void CEx27aSrvrItem::Serialize(CArchive& ar)
{
	// CEx27aSrvrItem::Serialize will be called by the framework if
	//  the item is copied to the clipboard.  This can happen automatically
	//  through the OLE callback OnGetClipboardData.  A good default for
	//  the embedded item is simply to delegate to the document's Serialize
	//  function.  If you support links, then you will want to serialize
	//  just a portion of the document.

	if (!IsLinkedItem())
	{
		CEx27aDoc* pDoc = GetDocument();
		ASSERT_VALID(pDoc);
		pDoc->Serialize(ar);
	}
}

BOOL CEx27aSrvrItem::OnGetExtent(DVASPECT dwDrawAspect, CSize& rSize)
{
	// Most applications, like this one, only handle drawing the content
	//  aspect of the item.  If you wish to support other aspects, such
	//  as DVASPECT_THUMBNAIL (by overriding OnDrawEx), then this
	//  implementation of OnGetExtent should be modified to handle the
	//  additional aspect(s).

	if (dwDrawAspect != DVASPECT_CONTENT)
		return COleServerItem::OnGetExtent(dwDrawAspect, rSize);

	// CEx27aSrvrItem::OnGetExtent is called to get the extent in
	//  HIMETRIC units of the entire item.  The default implementation
	//  here simply returns a hard-coded number of units.

	CEx27aDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);

	// TODO: replace this arbitrary size

	rSize = CSize(3000, 3000);   // 3000 x 3000 HIMETRIC units

	return TRUE;
}

BOOL CEx27aSrvrItem::OnDraw(CDC* pDC, CSize& rSize)
{
	// Remove this if you use rSize
 	UNREFERENCED_PARAMETER(rSize);

	CEx27aDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);

	// TODO: set mapping mode and extent
	//  (The extent is usually the same as the size returned from 
	//  OnGetExtent)
	pDC->SetMapMode(MM_ANISOTROPIC);
	pDC->SetWindowOrg(0,0);
	pDC->SetWindowExt(3000, -3000);

    CFont font;
    font.CreateFont(-500, 0, 0, 0, 400, FALSE, FALSE, 0,
                    ANSI_CHARSET, OUT_DEFAULT_PRECIS,
                    CLIP_DEFAULT_PRECIS, DEFAULT_QUALITY,
                    DEFAULT_PITCH | FF_SWISS, "Arial");
    CFont* pFont = pDC->SelectObject(&font);
    CRect rectEllipse(CRect(500, -500, 2500, -2500));
    pDC->Ellipse(rectEllipse);
    pDC->TextOut(0, 0, pDoc->m_strText);
    pDC->SelectObject(pFont);

	return TRUE;
}

/////////////////////////////////////////////////////////////////////////////
// CEx27aSrvrItem diagnostics

#ifdef _DEBUG
void CEx27aSrvrItem::AssertValid() const
{
	COleServerItem::AssertValid();
}

void CEx27aSrvrItem::Dump(CDumpContext& dc) const
{
	COleServerItem::Dump(dc);
}
#endif

/////////////////////////////////////////////////////////////////////////////