MFC鼠标绘图

最近刚开始学习Visual c++6.0

还是菜鸟级别

单击左键，画点

按住左键拖动，画线

单击右键，清除屏幕

改变画框大小，画面重画

// MyProg2bView.cpp : implementation of the CMyProg2bView class
//

#include "stdafx.h"
#include "MyProg2b.h"

#include "MyProg2bDoc.h"
#include "MyProg2bView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CMyProg2bView

IMPLEMENT_DYNCREATE(CMyProg2bView, CView)

BEGIN_MESSAGE_MAP(CMyProg2bView, CView)
 //{ {AFX_MSG_MAP(CMyProg2bView)
 ON_WM_LBUTTONDOWN()
 ON_WM_RBUTTONDOWN()
 ON_WM_MOUSEMOVE()
 ON_WM_ERASEBKGND()
 //}}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()

/////////////////////////////////////////////////////////////////////////////
// CMyProg2bView construction/destruction

CMyProg2bView::CMyProg2bView()
{
 // TODO: add construction