交通/航空行业

开发平台：
Visual C++

MOUSEDRAWTESTVIEW.CPP：源码内容
							// MouseDrawtestView.cpp : implementation of the CMouseDrawtestView class
//
#include "stdafx.h"
#include "MouseDrawtest.h"
#include "MouseDrawtestDoc.h"
#include "MouseDrawtestView.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CMouseDrawtestView
IMPLEMENT_DYNCREATE(CMouseDrawtestView, CScrollView)
BEGIN_MESSAGE_MAP(CMouseDrawtestView, CScrollView)
	//{{AFX_MSG_MAP(CMouseDrawtestView)
	ON_WM_LBUTTONDOWN()
	ON_WM_MOUSEMOVE()
	ON_WM_LBUTTONUP()
	ON_WM_SETCURSOR()
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CScrollView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CScrollView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CScrollView::OnFilePrintPreview)
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CMouseDrawtestView construction/destruction
CMouseDrawtestView::CMouseDrawtestView()
{
	// TODO: add construction code here
	m_Drawing=FALSE;
	m_Cursor=IDC_MYARROW;
	m_DrawOver=FALSE;
}
CMouseDrawtestView::~CMouseDrawtestView()
{
}
BOOL CMouseDrawtestView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs
	return CScrollView::PreCreateWindow(cs);
}
/////////////////////////////////////////////////////////////////////////////
// CMouseDrawtestView drawing
void CMouseDrawtestView::OnDraw(CDC* pDC)
{
	CMouseDrawtestDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
	if(m_Drawing)
	{
		pDC->SetROP2(R2_NOT);
		pDC->SelectObject(GetStockObject(NULL_BRUSH));
		pDC->Rectangle(m_Rect);
		return;
	}
	if(m_DrawOver)
	{
		pDC->SelectObject(GetStockObject(NULL_BRUSH));
		pDC->Rectangle(m_Rect);
		m_DrawOver=FALSE;
		return;
	}
	pDC->SelectObject(GetStockObject(NULL_BRUSH));
	pDC->Rectangle(m_Rect);
}
void CMouseDrawtestView::OnInitialUpdate()
{
	CScrollView::OnInitialUpdate();
	CSize sizeTotal;
	// TODO: calculate the total size of this view
	sizeTotal.cx = sizeTotal.cy = 100;
	SetScrollSizes(MM_TEXT, sizeTotal);
}
/////////////////////////////////////////////////////////////////////////////
// CMouseDrawtestView printing
BOOL CMouseDrawtestView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}
void CMouseDrawtestView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}
void CMouseDrawtestView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}
/////////////////////////////////////////////////////////////////////////////
// CMouseDrawtestView diagnostics
#ifdef _DEBUG
void CMouseDrawtestView::AssertValid() const
{
	CScrollView::AssertValid();
}
void CMouseDrawtestView::Dump(CDumpContext& dc) const
{
	CScrollView::Dump(dc);
}
CMouseDrawtestDoc* CMouseDrawtestView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CMouseDrawtestDoc)));
	return (CMouseDrawtestDoc*)m_pDocument;
}
#endif //_DEBUG
/////////////////////////////////////////////////////////////////////////////
// CMouseDrawtestView message handlers
void CMouseDrawtestView::OnLButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	m_Rect.top=point.y;
	m_Rect.left=point.x;
	m_Rect.right=point.x;
	m_Rect.bottom=point.y;
	Invalidate();
	SetCapture();
	SetCursor(AfxGetApp()->LoadCursor(IDC_MYCROSS));
//	m_Cursor=IDC_MYCROSS;
	m_Drawing=TRUE;
	CScrollView::OnLButtonDown(nFlags, point);
}
void CMouseDrawtestView::OnMouseMove(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	if(m_Drawing)
	{
		CSize sizeTotal;
		// TODO: calculate the total size of this view
		sizeTotal.cx = point.x+20;
		sizeTotal.cy = point.y+20;
		SetScrollSizes(MM_TEXT, sizeTotal);
		SetCursor(AfxGetApp()->LoadCursor(IDC_MYCROSS));
//		m_Cursor=IDC_MYCROSS;
		//擦除原有矩形：
		Invalidate();
		m_Rect.right=point.x;
		m_Rect.bottom=point.y;
		//重绘矩形：
		Invalidate();
	}
	CScrollView::OnMouseMove(nFlags, point);
}
void CMouseDrawtestView::OnLButtonUp(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	if(m_Drawing)
	{
		Invalidate();
		m_Rect.right=point.x;
		m_Rect.bottom=point.y;
		ReleaseCapture();
		m_Cursor=IDC_MYARROW;
		m_Drawing=FALSE;
		m_DrawOver=TRUE;
		Invalidate();
	}
	CScrollView::OnLButtonUp(nFlags, point);
}
BOOL CMouseDrawtestView::OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message) 
{
	// TODO: Add your message handler code here and/or call default
	HCURSOR hc=AfxGetApp()->LoadCursor(m_Cursor);
	SetCursor(hc);
	return TRUE;
//	return CScrollView::OnSetCursor(pWnd, nHitTest, message);
}

						