gusucode.com > Windows XP系统中如何屏蔽 Ctrl+Alt+Del、Alt+Tab以及Ctrl+Esc键序列 > Windows XP系统中如何屏蔽 Ctrl+Alt+Del、Alt+Tab以及Ctrl+Esc键序列/trapkeys/TrapKeysDlg.cpp

    /////////////////////////////////////////////////////////////////////////////
// Project：TRAPKEYS
// Author：Paul Dilascia
// Date：星期一, 九月 02, 2002
// Description：Visual C++ 6.0编译，在Windows 2000,Windows XP环境运行通过。
//
/////////////////////////////////////////////////////////////////////////////
// TrapKeysDlg.cpp : implementation file
//

#include "stdafx.h"
#include "TrapKeys.h"
#include "TrapKeysDlg.h"
#include "TaskKeyMgr.h"

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

#include "about.h"
/////////////////////////////////////////////////////////////////////////////
// CTrapKeysDlg dialog

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

BEGIN_MESSAGE_MAP(CTrapKeysDlg, CDialog)
	//{{AFX_MSG_MAP(CTrapKeysDlg)
	ON_WM_SYSCOMMAND()
	ON_BN_CLICKED(ID_APP_ABOUT,OnAbout)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_DISABLE_TASKBAR, OnDisableTaskbar)
	ON_BN_CLICKED(IDC_DISABLE_TASKKEYS, OnDisableTaskkeys)
	ON_BN_CLICKED(IDC_DISABLE_TASKMGR, OnDisableTaskmgr)
	//}}AFX_MSG_MAP
	ON_UPDATE_COMMAND_UI(IDC_DISABLE_TASKKEYS, OnUpdateDisableTaskKeys)
	ON_UPDATE_COMMAND_UI(IDC_DISABLE_TASKBAR, OnUpdateDisableTaskbar)
	ON_UPDATE_COMMAND_UI(IDC_DISABLE_TASKMGR, OnUpdateDisableTaskMgr)
	ON_MESSAGE(WM_KICKIDLE,OnKickIdle)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTrapKeysDlg message handlers

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

void CTrapKeysDlg::OnAbout()
{
	CAboutDlg().DoModal();
}

void CTrapKeysDlg::OnDisableTaskbar() 
{
	// TODO: Add your control notification handler code here
	CTaskKeyMgr::Disable(CTaskKeyMgr::TASKBAR,
		!CTaskKeyMgr::IsTaskBarDisabled());
	
}
void CTrapKeysDlg::OnUpdateDisableTaskbar(CCmdUI* pCmdUI)
{
	pCmdUI->SetCheck(CTaskKeyMgr::IsTaskBarDisabled());
}

void CTrapKeysDlg::OnDisableTaskkeys() 
{
	// TODO: Add your control notification handler code here
	CTaskKeyMgr::Disable(CTaskKeyMgr::TASKKEYS,
		!CTaskKeyMgr::AreTaskKeysDisabled(), TRUE); // beep
	
}
void CTrapKeysDlg::OnUpdateDisableTaskKeys(CCmdUI* pCmdUI)
{
	pCmdUI->SetCheck(CTaskKeyMgr::AreTaskKeysDisabled());
}

void CTrapKeysDlg::OnDisableTaskmgr() 
{
	// TODO: Add your control notification handler code here
	CTaskKeyMgr::Disable(CTaskKeyMgr::TASKMGR,
		!CTaskKeyMgr::IsTaskMgrDisabled());
	
}
void CTrapKeysDlg::OnUpdateDisableTaskMgr(CCmdUI* pCmdUI)
{
	pCmdUI->SetCheck(CTaskKeyMgr::IsTaskMgrDisabled());
}
////////////////////////////////////////////////////////////////
// This is required to make ON_UPDATE_COMMAND_UI work properly.
// Cf. my column in the July 1997 Microsoft Systems Journal.
// 
LRESULT CTrapKeysDlg::OnKickIdle(WPARAM wp, LPARAM lCount)
{
	UpdateDialogControls(this, TRUE);
	return 0;
}