mousedemoview.cpp

来自「一个关于捕获鼠标输入的程序」· C++ 代码 · 共 150 行

// MouseDemoView.cpp : CMouseDemoView 类的实现
//

#include "stdafx.h"
#include "MouseDemo.h"

#include "MouseDemoDoc.h"
#include "MouseDemoView.h"
#include ".\mousedemoview.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// CMouseDemoView

IMPLEMENT_DYNCREATE(CMouseDemoView, CView)

BEGIN_MESSAGE_MAP(CMouseDemoView, CView)
	// 标准打印命令
	ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)
	ON_WM_LBUTTONDOWN()
	ON_WM_LBUTTONUP()
	ON_WM_MOUSEMOVE()
END_MESSAGE_MAP()

// CMouseDemoView 构造/析构

CMouseDemoView::CMouseDemoView()
: m_IsDown(false)
, m_MyText(_T(""))
{
	// TODO: 在此处添加构造代码

}

CMouseDemoView::~CMouseDemoView()
{
}

BOOL CMouseDemoView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: 在此处通过修改 CREATESTRUCT cs 来修改窗口类或
	// 样式

	return CView::PreCreateWindow(cs);
}

// CMouseDemoView 绘制

void CMouseDemoView::OnDraw(CDC* /*pDC*/)
{
	CMouseDemoDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	if (!pDoc)
		return;

	// TODO: 在此处为本机数据添加绘制代码
}


// CMouseDemoView 打印

BOOL CMouseDemoView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// 默认准备
	return DoPreparePrinting(pInfo);
}

void CMouseDemoView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: 打印前添加额外的初始化
}

void CMouseDemoView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: 打印后添加清除过程
}


// CMouseDemoView 诊断

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

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

CMouseDemoDoc* CMouseDemoView::GetDocument() const // 非调试版本是内联的
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CMouseDemoDoc)));
	return (CMouseDemoDoc*)m_pDocument;
}
#endif //_DEBUG


// CMouseDemoView 消息处理程序

void CMouseDemoView::OnLButtonDown(UINT nFlags, CPoint point)
{
	// TODO: 在此添加消息处理程序代码和/或调用默认值
	SetCapture();//捕获鼠标
	RECT rect;
	GetClientRect(&rect);
	ClientToScreen(&rect);
	ClipCursor(&rect);
   this->m_IsDown=true;
   this->m_MyText.Format("您单击的位置为：X=%d，Y=%d" ,point.x,point.y);
   CDC* pDC;
   pDC=GetDC();
   pDC->TextOut(10,10,m_MyText,m_MyText.GetLength());

	CView::OnLButtonDown(nFlags, point);
}

void CMouseDemoView::OnLButtonUp(UINT nFlags, CPoint point)
{
	// TODO: 在此添加消息处理程序代码和/或调用默认值
	ReleaseCapture();//释放鼠标
	ClipCursor(NULL);
    this->m_IsDown=false;
   this->m_MyText.Format("您单击的位置为：X=%d，Y=%d" ,point.x,point.y); 
   CDC* pDC;
   pDC = GetDC();
   pDC->TextOut(10,10,m_MyText,m_MyText.GetLength());
	CView::OnLButtonUp(nFlags, point);
}

void CMouseDemoView::OnMouseMove(UINT nFlags, CPoint point)
{
	// TODO: 在此添加消息处理程序代码和/或调用默认值
  if(m_IsDown)
  {
     this->m_MyText.Format("您单击的位置为：X=%d，Y=%d" ,point.x,point.y);
      CDC* pDC;
      pDC=GetDC();
       pDC->TextOut(10,10,m_MyText,m_MyText.GetLength());
  }

	CView::OnMouseMove(nFlags, point);
}