expanddlgdlg.cpp

C++编程实践与技巧一书各章节的源码

// ExpandDlgDlg.cpp : implementation file
//

#include "stdafx.h"
#include "ExpandDlg.h"
#include "ExpandDlgDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CExpandDlgDlg dialog

CExpandDlgDlg::CExpandDlgDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CExpandDlgDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CExpandDlgDlg)
		// 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_nNormalWidth = 0; 
	m_nExpandedWidth = 0; 
	m_bExpanded = FALSE;

}

void CExpandDlgDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CExpandDlgDlg)
	DDX_Control(pDX, IDC_STATIC_DEVIDE, m_Devide);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CExpandDlgDlg, CDialog)
	//{{AFX_MSG_MAP(CExpandDlgDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON_ADVANCED, OnButtonAdvanced)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CExpandDlgDlg message handlers

BOOL CExpandDlgDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	ExpandyaContract();	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CExpandDlgDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
		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 CExpandDlgDlg::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 CExpandDlgDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}



void CExpandDlgDlg::OnButtonAdvanced() 
{
	// TODO: Add your control notification handler code here
	ExpandyaContract();
}

void  CExpandDlgDlg::ExpandyaContract()
{
	CRect rcDlg, rcMarker;
	GetWindowRect(rcDlg); 
	
	if (!m_bExpanded)
	{
		m_nExpandedWidth = rcDlg.Width(); 
		m_Devide.GetWindowRect(rcMarker); 
		m_nNormalWidth = (rcMarker.right - rcDlg.left);
		rcDlg.SetRect(rcDlg.left, rcDlg.top,    rcDlg.left + m_nNormalWidth+12,
			rcDlg.top + rcDlg.Height()); 
		HWND hWndChild = ::GetDlgItem(m_hWnd, IDC_STATIC_DEVIDE);
	
		while (hWndChild != NULL)
		{  
			hWndChild = ::GetNextWindow(hWndChild, GW_HWNDNEXT);
			::EnableWindow(hWndChild, m_bExpanded);
		}

	}

	else 
	{
		rcDlg.SetRect( rcDlg.left, rcDlg.top,    rcDlg.left + + m_nExpandedWidth,
			rcDlg.top + rcDlg.Height() ); 
		HWND hWndChild = ::GetDlgItem(m_hWnd, IDC_STATIC_DEVIDE);
		
		while (hWndChild != NULL)
		{  
			hWndChild = ::GetNextWindow(hWndChild, GW_HWNDNEXT);
			::EnableWindow(hWndChild, m_bExpanded);
		}
		
	} 
	
	MoveWindow(rcDlg, TRUE);
	
	m_bExpanded = !m_bExpanded; 

}