edittextview.cpp

MFC程序

// EditTextView.cpp : implementation of the CEditTextView class
//

#include "stdafx.h"
#include "EditText.h"

#include "EditTextDoc.h"
#include "EditTextView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CEditTextView

IMPLEMENT_DYNCREATE(CEditTextView, CView)

BEGIN_MESSAGE_MAP(CEditTextView, CView)
	//{{AFX_MSG_MAP(CEditTextView)
	ON_WM_LBUTTONDOWN()
	ON_WM_CHAR()
	ON_WM_CREATE()
	ON_WM_TIMER()
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CEditTextView construction/destruction

CEditTextView::CEditTextView()
{
   m_strLine = "";
   m_ptOrigin = 0;
   m_nWidth = 0;// TODO: add construction code here

}

CEditTextView::~CEditTextView()
{
}

BOOL CEditTextView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CEditTextView drawing

void CEditTextView::OnDraw(CDC* pDC)
{
	CEditTextDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
}

/////////////////////////////////////////////////////////////////////////////
// CEditTextView printing

BOOL CEditTextView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}

void CEditTextView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}

void CEditTextView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}

/////////////////////////////////////////////////////////////////////////////
// CEditTextView diagnostics

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

void CEditTextView::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}

CEditTextDoc* CEditTextView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CEditTextDoc)));
	return (CEditTextDoc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CEditTextView message handlers

void CEditTextView::OnLButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	SetCaretPos(point);
	m_strLine.Empty();
	m_ptOrigin = point;
	CView::OnLButtonDown(nFlags, point);
}

void CEditTextView::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
	// TODO: Add your message handler code here and/or call default
	CClientDC dc(this);
	CFont pfont;
	pfont.CreatePointFont(300,"华文行楷");
	CFont *pOldFont = dc.SelectObject(&pfont);
	TEXTMETRIC tm;
	dc.GetTextMetrics(&tm);
	if(0x0d == nChar)//回车的处理
	{
		m_strLine.Empty();
		m_ptOrigin.y +=tm.tmHeight;
	}
	else if(0x08 == nChar)//退格键的处理 
	{
		COLORREF clr = dc.SetTextColor(dc.GetBkColor());
		dc.TextOut(m_ptOrigin.x,m_ptOrigin.y,m_strLine);
		m_strLine = m_strLine.Left(m_strLine.GetLength()-1);
	    dc.SetTextColor(clr);
	}
	else
	{
		m_strLine += nChar;
	}
	CSize sz = dc.GetTextExtent(m_strLine);//插入符随输入的移动
	CPoint pt;
	pt.x = m_ptOrigin.x + sz.cx;
	pt.y = m_ptOrigin.y;
	SetCaretPos(pt);

	dc.TextOut(m_ptOrigin.x,m_ptOrigin.y,m_strLine);
	dc.SelectObject(pOldFont);
	CView::OnChar(nChar, nRepCnt, nFlags);
	
}

int CEditTextView::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CView::OnCreate(lpCreateStruct) == -1)
		return -1;
	
	CreateSolidCaret(10,10);
	ShowCaret();	// TODO: Add your specialized creation code here
	SetTimer(1,100,NULL);
	
	return 0;
}

void CEditTextView::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default
	m_nWidth +=5;
	CClientDC dc(this);
	TEXTMETRIC tm;
	dc.GetTextMetrics(&tm);
	CRect rect;
	rect.left = 40;
	rect.top = 200;
	rect.right = m_nWidth;
	rect.bottom = rect.top + tm.tmHeight;

	dc.SetTextColor(RGB(255,0,0));
	CString str;
	str.LoadString(IDS_Ding);
	dc.DrawText(str,rect,DT_RIGHT);

	CSize sz = dc.GetTextExtent(str);
	if(m_nWidth > sz.cx)
	{
		m_nWidth = 0;
		dc.SetTextColor(RGB(0,255,0));
		dc.TextOut(40,200,str);
	}
	
	


	CView::OnTimer(nIDEvent);
}