302005.txt

人机交互方面实现一个图形界面为目的而写的的源码

// 302005人机交互View.cpp : implementation of the CMy302005View class
//

#include "stdafx.h"
#include "302005人机交互.h"

#include "302005人机交互Doc.h"
#include "302005人机交互View.h"

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

/////////////////////////////////////////////////////////////////////////////
// CMy302005View

IMPLEMENT_DYNCREATE(CMy302005View, CView)

BEGIN_MESSAGE_MAP(CMy302005View, CView)
	//{{AFX_MSG_MAP(CMy302005View)
	ON_COMMAND(IDM_DOT, OnDot)
	ON_COMMAND(IDM_LINE, OnLine)
	ON_COMMAND(IDM_TRCTANGLE, OnTrctangle)
	ON_COMMAND(IDM_TRIANGLE, OnTriangle)
	ON_WM_LBUTTONDOWN()
	ON_WM_LBUTTONUP()
	//}}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()

/////////////////////////////////////////////////////////////////////////////
// CMy302005View construction/destruction

CMy302005View::CMy302005View()
{
	// TODO: add construction code here
m_nDrawType=0;                                  //这两行为成员函数的初始化
m_ptOrigin=0;
}

CMy302005View::~CMy302005View()                  //析构函数，释放不必要空间
{
}

BOOL CMy302005View::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CMy302005View drawing

void CMy302005View::OnDraw(CDC* pDC)
{
	CMy302005Doc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
}

/////////////////////////////////////////////////////////////////////////////
// CMy302005View printing

BOOL CMy302005View::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}

void CMy302005View::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}

void CMy302005View::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}

/////////////////////////////////////////////////////////////////////////////
// CMy302005View diagnostics

#ifdef _DEBUG
void CMy302005View::AssertValid() const
{
	CView::AssertValid();
}

void CMy302005View::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}

CMy302005Doc* CMy302005View::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CMy302005Doc)));
	return (CMy302005Doc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CMy302005View message handlers

void CMy302005View::OnDot() 
{
	// TODO: Add your command handler code here
		m_nDrawType=1;
}

void CMy302005View::OnLine() 
{
	// TODO: Add your command handler code here
	m_nDrawType=2;
}

void CMy302005View::OnTrctangle() 
{
	// TODO: Add your command handler code here
	m_nDrawType=3;
}

void CMy302005View::OnTriangle() 
{
	// TODO: Add your command handler code here
	m_nDrawType=4;
}

void CMy302005View::OnLButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	m_ptOrigin=point;
	CView::OnLButtonDown(nFlags, point);
}

void CMy302005View::OnLButtonUp(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	// TODO: Add your message handler code here and/or call default
	CClientDC dc(this);
	CPen pen(PS_SOLID,1,RGB(255,0,0));                                //设置颜色为红色
	dc.SelectObject(&pen);
	CBrush *pBrush=CBrush::FromHandle((HBRUSH)GetStockObject(NULL_BRUSH));  //返回CBrush的指针,利用HBRUSH为了强制转换
    dc.SelectObject(pBrush);      //将画刷加入表中，现在使用的是透明的画刷


switch(m_nDrawType)                                                 //当m_nDrawType分别取1，2，3，4时候分别
{                                                                   //画出不同形状的图形
case 1:
	dc.SetPixel(point,RGB(255,0,0));
	break;
case 2:
	dc.MoveTo(m_ptOrigin);
	dc.LineTo(point);
	break;
case 3:
	dc.Rectangle(CRect(m_ptOrigin,point));
	break;
case 4:
	dc.Ellipse(CRect(m_ptOrigin,point));
	break;
	CView::OnLButtonUp(nFlags, point);
	CView::OnLButtonUp(nFlags, point);
}
}