keybdhookclientdlg.cpp

主要介绍vc++6.0的编程过程

// KeybdHookClientDlg.cpp : implementation file
//

#include "stdafx.h"
#include "KeybdHookClient.h"
#include "KeybdHookClientDlg.h"

#include "..\KeybdHook\KeybdHook.h"

#include "about.h"

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

/////////////////////////////////////////////////////////////////////////////
// CKeybdHookClientDlg dialog

CKeybdHookClientDlg::CKeybdHookClientDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CKeybdHookClientDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CKeybdHookClientDlg)
		// 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);

	m_bHookInstalled = FALSE;
}

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

BEGIN_MESSAGE_MAP(CKeybdHookClientDlg, CDialog)
	//{{AFX_MSG_MAP(CKeybdHookClientDlg)
	ON_WM_SYSCOMMAND()
	ON_BN_CLICKED(ID_APP_ABOUT, OnAbout)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CKeybdHookClientDlg message handlers

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

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

void CKeybdHookClientDlg::OnOK() 
{
 if (m_bHookInstalled)
 {
  AfxMessageBox(_T("The keyboard hook is already installed"));
 }
 else
 {
  m_bHookInstalled = InstallKeyboardHook(GetSafeHwnd());

	CString strMsg;
	strMsg.Format(_T("Attempt to install the keyboard hook %s"),
	m_bHookInstalled ? _T("Succeeded") : _T("Failed"));

  AfxMessageBox(strMsg); 
 }
}

void CKeybdHookClientDlg::OnCancel() 
{
 if (m_bHookInstalled)
 {
	DeInstallKeyboardHook();
 }
 CDialog::OnCancel();
}