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SendKeys in C++

, 14 Jun 2004
A C++ port and enhancement of C#'s / VB's SendKeys function.
sendkeys_cpp_src.zip
res
SendKeysSample.ico
Binaries
SendKeysSample.exe
SendKeysSample.dsw
SendKeysSample.clw
SendKeysSample.dsp
// SendKeysSampleDlg.cpp : implementation file
//

#include "stdafx.h"
#include "SendKeysSample.h"
#include "SendKeysSampleDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CSendKeysSampleDlg dialog

CSendKeysSampleDlg::CSendKeysSampleDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CSendKeysSampleDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CSendKeysSampleDlg)
	m_chkOnlyToApp = TRUE;
	m_edtAppTitle = _T("Notepad");
	m_edtKeyStrokes = _T("{DELAY=200}Hello we{BS}orld!");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CSendKeysSampleDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CSendKeysSampleDlg)
	DDX_Check(pDX, IDC_CHK_TOAPP, m_chkOnlyToApp);
	DDX_Text(pDX, IDC_EDIT_APP, m_edtAppTitle);
	DDX_Text(pDX, IDC_EDIT_KEYSTROKES, m_edtKeyStrokes);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CSendKeysSampleDlg, CDialog)
	//{{AFX_MSG_MAP(CSendKeysSampleDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON2, OnButton2)
	ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
	ON_BN_CLICKED(IDC_BUTTON3, OnButton3)
	ON_BN_CLICKED(IDC_BUTTON4, OnButton4)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CSendKeysSampleDlg message handlers

BOOL CSendKeysSampleDlg::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 CSendKeysSampleDlg::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 CSendKeysSampleDlg::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 CSendKeysSampleDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CSendKeysSampleDlg::OnOK() 
{
  UpdateData(TRUE);
  
  if (m_chkOnlyToApp && !m_sk.AppActivate((LPCTSTR)m_edtAppTitle))
  {
    MessageBox(_T("Could not send to this application!"));
    return;
  }

  m_sk.SendKeys((LPCTSTR)m_edtKeyStrokes);
}

void CSendKeysSampleDlg::OnButton2() 
{
  m_sk.SendKeys(_T("{DELAY=200}@rnotepad~{appactivate Notepad}{DELAY 100}Hello!!!!%ha{BEEP 1999 1000}{ESC}% {DOWN 5}"));
}

void CSendKeysSampleDlg::OnButton1() 
{
  m_sk.SendKeys(_T("{DELAY=200}@rcalc~{DELAY 100}{appactivate Calculator}1500{PLUS}1*600~"));
}

void CSendKeysSampleDlg::OnButton3() 
{
  m_sk.SendKeys(_T("{DELAY=200}@rcmd~{DELAY 500}dir/w~cd ..~dir/w~title I love Cmd line!~cd\\~exit"));
}

void CSendKeysSampleDlg::OnButton4() 
{
  MessageBox(_T("turn off all LEDs and watch!"));
  m_sk.SetDelay(200);
  for (int i=0;i<5;i++)
  {
    m_sk.SendKeys(_T("{NUMLOCK}{CAPSLOCK}{SCROLL}{SCROLL}{CAPSLOCK}{NUMLOCK}"));
  }
}

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About the Author

Elias Bachaalany
Web Developer
United States United States
Elias (aka lallousx86, @0xeb) has always been interested in the making of things and their inner workings.
 
His computer interests include system programming, reverse engineering, writing libraries, tutorials and articles.
 
In his free time, and apart from researching, his favorite reading topics include: dreams, metaphysics, philosophy, psychology and any other human/mystical science.
 
Former employee of Hex-Rays (the creators of IDA Pro), was responsible about many debugger plugins, IDAPython project ownership and what not.
 
Elias currently works at Microsoft as a software security engineer.
 
More articles and blog posts can be found here:
 
- http://lallousx86.wordpress.com/
- http://0xeb.wordpress.com/
- http://www.hexblog.com/?author=3

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