hookexedlg.cpp

＂Visual C++.net实践与提高－深入Windows编程＂的源代码

// HookEXEDlg.cpp : implementation file
//

#include "stdafx.h"
#include "HookEXE.h"
#include "HookEXEDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

/* -------------------------------- */
class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

/* -------------------------------- */
CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

/* -------------------------------- */
void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CHookEXEDlg dialog
/* -------------------------------- */
CHookEXEDlg::CHookEXEDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CHookEXEDlg::IDD, pParent), m_hInstDLL(NULL)
{
	//{{AFX_DATA_INIT(CHookEXEDlg)
		// 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 CHookEXEDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CHookEXEDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

#define WM_EVENTCOME	WM_USER + 500

/* -------------------------------- */
BEGIN_MESSAGE_MAP(CHookEXEDlg, CDialog)
	//{{AFX_MSG_MAP(CHookEXEDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_WM_DESTROY()
	ON_WM_TIMER()
	ON_MESSAGE(WM_EVENTCOME, OnEventCome)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CHookEXEDlg message handlers

#define ID_TIMER	10
#define ONE_SECOND	1000

/* -------------------------------- */
BOOL CHookEXEDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// 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
	if (LoadLibrary())	SetupHook();
	m_nTickCount = ::GetTickCount();
	SetTimer(ID_TIMER, ONE_SECOND, NULL);
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

/* -------------------------------- */
void CHookEXEDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// 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 CHookEXEDlg::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 CHookEXEDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

/* -------------------------------- */
void CHookEXEDlg::OnDestroy() 
{
	ReleaseHook();
	FreeLibrary();

	CDialog::OnDestroy();
}

/* -------------------------------- */
BOOL CHookEXEDlg::LoadLibrary()
{
	m_hInstDLL = ::LoadLibrary(TEXT("HookDLL.dll"));
	return (m_hInstDLL != NULL);
}

/* -------------------------------- */
void CHookEXEDlg::FreeLibrary()
{
	::FreeLibrary(m_hInstDLL);
}

/* -------------------------------- */
BOOL CHookEXEDlg::SetupHook()
{
	typedef BOOL (*SETUPHOOK)(HWND hWnd);
	SETUPHOOK p = (SETUPHOOK)::GetProcAddress(m_hInstDLL, TEXT("SetupHook"));
	if (p)	return p(GetSafeHwnd());
	return FALSE;
}

/* -------------------------------- */
void CHookEXEDlg::ReleaseHook()
{
	typedef BOOL (*RELEASEHOOK)();
	RELEASEHOOK p = (RELEASEHOOK)::GetProcAddress(m_hInstDLL, TEXT("ReleaseHook"));
	if (p)	p();
}

#define EVENT_TIME	1 * 60 * 1000	//	1 minutes

/* -------------------------------- */
void CHookEXEDlg::OnTimer(UINT nIDEvent) 
{
	if (nIDEvent == ID_TIMER)
	{
		DWORD x = ::GetTickCount();
		if ((x - m_nTickCount) >= EVENT_TIME)
		{
			m_nTickCount = x;
			MessageBox(TEXT("1 minutes have passed."), TEXT("Timer"), MB_ICONINFORMATION | MB_OK);
		}
		return;
	}
	CDialog::OnTimer(nIDEvent);
}

/* -------------------------------- */
LRESULT CHookEXEDlg::OnEventCome(WPARAM, LPARAM)
{
	m_nTickCount = ::GetTickCount();
	return 0;
}