usepenview.cpp

这个是我们学校用的VC++教案

// UsePenView.cpp : implementation of the CUsePenView class
//

#include "stdafx.h"
#include "UsePen.h"

#include "UsePenDoc.h"
#include "UsePenView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CUsePenView

IMPLEMENT_DYNCREATE(CUsePenView, CView)

BEGIN_MESSAGE_MAP(CUsePenView, CView)
	//{{AFX_MSG_MAP(CUsePenView)
		// NOTE - the ClassWizard will add and remove mapping macros here.
		//    DO NOT EDIT what you see in these blocks of generated code!
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CUsePenView construction/destruction

CUsePenView::CUsePenView()
{
	// TODO: add construction code here

}

CUsePenView::~CUsePenView()
{
}

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

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CUsePenView drawing

void CUsePenView::OnDraw(CDC* pDC)
{
	CUsePenDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
	CPen  *pPenOld, PenNew;
	int  nPenStyle[]={ PS_SOLID,        // 实线
					   PS_DOT,          // 点线
					   PS_DASH,         // 虚线
					   PS_DASHDOT,      // 点划线
					   PS_DASHDOTDOT,   // 双点划线
					   PS_NULL,	        // 空的边框
					   PS_INSIDEFRAME,  // 边框实线
	};
	char *strStyle[]={"Solid","Dot","Dash","DashDot","DashDotDot","Null","InsideFrame"};
	pDC->TextOut(60,10,"用不同样式的画笔绘图");
	for(int  i=0; i<7; i++)    // 用不同样式的画笔绘图
	{
		if(PenNew.CreatePen(nPenStyle[i],1,RGB(0,0,0)))  // 创建新画笔
		{
			pPenOld=pDC->SelectObject(&PenNew);   // 选择创建的画笔
			pDC->TextOut(10,30+20*i,strStyle[i]);
			pDC->MoveTo(100,40+20*i);
			pDC->LineTo(200,40+20*i);
			pDC->SelectObject(pPenOld);    // 恢复设备环境DC中原来的画笔
			PenNew.DeleteObject();   // 删除底层的GDI对象
		}
		else
		{
			MessageBox("不能创建画笔！");
		}
	}
	char *strWidth[]={"1","2","3","4","5","6","7"};
	pDC->TextOut(260,10,"用不同宽度的画笔绘图");
	for(i=0; i<7; i++)    // 用不同宽度的画笔绘图
	{
		if(PenNew.CreatePen(PS_SOLID,i+1,RGB(0,0,0)))  // 创建新画笔
		{
			pPenOld=pDC->SelectObject(&PenNew);   // 选择创建的画笔
			pDC->TextOut(260,30+20*i,strWidth[i]);
			pDC->MoveTo(300,40+20*i);
			pDC->LineTo(400,40+20*i);
			pDC->SelectObject(pPenOld);    // 恢复设备环境DC中原来的画笔
			PenNew.DeleteObject();   // 删除底层的GDI对象
		}
		else
		{
			MessageBox("不能创建画笔！");
		}
	}
	char *strColor[]={"红","绿","蓝","黄","紫","青","灰"};
	COLORREF  rgbPenClr[]={RGB(255,0,0),RGB(0,255,0),RGB(0,0,255),RGB(255,255,0),
		RGB(255,0,255),RGB(0,255,255),RGB(192,192,192)};
	pDC->TextOut(460,10,"用不同颜色的画笔绘图");
	for(i=0; i<7; i++)    // 用不同颜色的画笔绘图
	{
		CPen  *pPenNew=new CPen(PS_SOLID,2,rgbPenClr[i]);  // 创建画笔的另一种方法
		pPenOld=pDC->SelectObject(pPenNew);   // 选择创建的画笔
		pDC->TextOut(460,30+20*i,strColor[i]);
		pDC->MoveTo(500,40+20*i);
		pDC->LineTo(600,40+20*i);
		pDC->SelectObject(pPenOld);    // 恢复设备环境DC中原来的画笔
		delete  pPenNew;       // 自动删除底层的GDI对象
	}
}

/////////////////////////////////////////////////////////////////////////////
// CUsePenView diagnostics

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CUsePenView message handlers