// Visual C++ Text Editor
// Terrence Ma
// Modified from Inside Visual C++

// Add to ex12aDoc.h
public:
	CString m_strText;

// Add to ex12aDoc.cpp
BOOL CEx12aDoc::OnNewDocument()
{
	if (!CDocument::OnNewDocument())
		return FALSE;
	m_strText = "Hello (from CEx12aDoc::OnNewDocument)";
	return TRUE;
}

void CEx12aDoc::OnEditClearDocument() 
{
	m_strText.Empty();	
}

void CEx12aDoc::OnUpdateEditClearDocument(CCmdUI* pCmdUI) 
{
	pCmdUI->Enable(!m_strText.IsEmpty());	
}

// Add to ex12aView.h
public:
	CRichEditCtrl m_rich;

// Add to ex12aView.cpp
int CEx12aView::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	CRect rect(0, 0, 0, 0);
	if (CView::OnCreate(lpCreateStruct) == -1)
		return -1;
	m_rich.Create(ES_AUTOVSCROLL | ES_MULTILINE | ES_WANTRETURN |
	              WS_CHILD | WS_VISIBLE | WS_VSCROLL, rect, this, 1);
	CHARFORMAT cf;
	Format(cf);
	m_rich.SetDefaultCharFormat(cf);
	return 0;
}

void CEx12aView::OnSize(UINT nType, int cx, int cy) 
{
	CRect rect;
	CView::OnSize(nType, cx, cy);
	GetClientRect(rect);
	m_rich.SetWindowPos(&wndTop, 0, 0, rect.right - rect.left,
	                    rect.bottom - rect.top, SWP_SHOWWINDOW);
}

void CEx12aView::OnTransferGetData() 
{
	CEx12aDoc* pDoc = GetDocument();
	m_rich.SetWindowText(pDoc->m_strText);
	m_rich.SetModify(FALSE);
}

void CEx12aView::OnTransferStoreData() 
{
	CEx12aDoc* pDoc = GetDocument();
	m_rich.GetWindowText(pDoc->m_strText);
	m_rich.SetModify(FALSE);
}

void CEx12aView::OnUpdateTransferStoreData(CCmdUI* pCmdUI) 
{
	pCmdUI->Enable(m_rich.GetModify());
}