virtual_memdlg.cpp

在csdn down下来的

// virtual_memDlg.cpp : implementation file
//

#include "stdafx.h"
#include "virtual_mem.h"
#include "virtual_memDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CVirtual_memDlg dialog

CVirtual_memDlg::CVirtual_memDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CVirtual_memDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CVirtual_memDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CVirtual_memDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CVirtual_memDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CVirtual_memDlg, CDialog)
	//{{AFX_MSG_MAP(CVirtual_memDlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_COMMIT, OnCommit)
	ON_BN_CLICKED(IDC_ALLOC2, OnAlloc2)
	ON_BN_CLICKED(IDC_SET_READ, OnSetRead)
	ON_BN_CLICKED(IDC_SET_RW, OnSetRw)
	ON_BN_CLICKED(IDC_WRITE, OnWrite)
	ON_BN_CLICKED(IDC_READ, OnRead)
	ON_BN_CLICKED(IDC_FREE2, OnFree2)
	ON_BN_CLICKED(IDC_FREE, OnFree)
	ON_BN_CLICKED(IDC_QUERY, OnQuery)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CVirtual_memDlg message handlers

BOOL CVirtual_memDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CVirtual_memDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CVirtual_memDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

#define BASE_PTR 0X60000000

void CVirtual_memDlg::OnAlloc2() 
{
	if(VirtualAlloc((LPVOID)BASE_PTR,1024*128,MEM_RESERVE,PAGE_READWRITE))
	{
		AfxMessageBox("成功");
	}
	else
	{
		AfxMessageBox("失败");
	}
}

void CVirtual_memDlg::OnCommit() 
{
	if(VirtualAlloc((LPVOID)BASE_PTR,1024*128,MEM_COMMIT,PAGE_READWRITE))
	{
		AfxMessageBox("成功");
	}
	else
	{
		AfxMessageBox("失败");
	}
}

void CVirtual_memDlg::OnSetRead() 
{
	DWORD dwOld;
	if(VirtualProtect((LPVOID)BASE_PTR,1024*128,PAGE_READONLY,&dwOld))
	{
		AfxMessageBox("成功");
	}
	else
	{
		AfxMessageBox("失败");
	}
}

void CVirtual_memDlg::OnSetRw() 
{
	DWORD dwOld;
	if(VirtualProtect((LPVOID)BASE_PTR,1024*128,PAGE_READWRITE,&dwOld))
	{
		AfxMessageBox("成功");
	}
	else
	{
		AfxMessageBox("失败");
	}
}

void CVirtual_memDlg::OnWrite() 
{
	memset((void*)BASE_PTR,'A',128*1024);
}

void CVirtual_memDlg::OnRead() 
{
	char buf[1024*128];
	memcpy(buf,(void*)BASE_PTR,128*1024);
}

void CVirtual_memDlg::OnFree2() 
{
	if(VirtualFree((LPVOID)BASE_PTR,1024*128,MEM_DECOMMIT))
	{
		AfxMessageBox("成功");
	}
	else
	{
		AfxMessageBox("失败");
	}

}

void CVirtual_memDlg::OnFree() 
{
	if(VirtualFree((LPVOID)BASE_PTR,0,MEM_RELEASE))
	{
		AfxMessageBox("成功");
	}
	else
	{
		AfxMessageBox("失败");
	}
}

void CVirtual_memDlg::OnQuery() 
{
	MEMORY_BASIC_INFORMATION buf;
	if(VirtualQuery((LPVOID)(BASE_PTR),&buf,sizeof(buf)))
	{
		CString szOut;
		szOut.Format("地址1 %x\n地址2 %x\n申请时的保护方式 %x\n大小 %x\n状态 %x\n提交时的保护方式 %x",
						buf.BaseAddress,buf.AllocationBase,buf.AllocationProtect,buf.RegionSize,
						buf.State,buf.Protect);
		AfxMessageBox(szOut);
	}
	else
	{
		AfxMessageBox("失败");
	}
}