wzddlg.cpp

《vc++扩展编程实例》源码。运用Visual C++ 5.0或6.0的高级编程技巧

// WzdDlg.cpp : implementation file
//

#include "stdafx.h"
#include "wzd.h"
#include "WzdDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CWzdDialog dialog


CWzdDialog::CWzdDialog(CWnd* pParent /*=NULL*/)
	: CDialog(CWzdDialog::IDD, pParent)
{
	//{{AFX_DATA_INIT(CWzdDialog)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	m_bToggleSize=FALSE;
}


void CWzdDialog::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CWzdDialog)
	DDX_Control(pDX, IDC_MORE_BUTTON, m_ctrlMoreButton);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CWzdDialog, CDialog)
	//{{AFX_MSG_MAP(CWzdDialog)
	ON_BN_CLICKED(IDC_MORE_BUTTON, OnMoreButton)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CWzdDialog message handlers

BOOL CWzdDialog::OnInitDialog() 
{
	CDialog::OnInitDialog();
	
	// save our full size
	GetWindowRect(&m_rectFull);
	m_rectHalf=m_rectFull;

	// calculate our half size based on bottom of "More" button
	CRect rect;
	m_ctrlMoreButton.GetWindowRect(&rect);
	m_rectHalf.bottom=rect.bottom+10; // + 10 for cosmetics

	// toggle window size
	ToggleSize();

	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}

void CWzdDialog::OnMoreButton() 
{
	ToggleSize();	
}

void CWzdDialog::ToggleSize() 
{
	CRect rect;
	CString str;
	if (m_bToggleSize)
	{
		str="<< &Less";
		rect=m_rectFull;
	}
	else
	{
		str="&More >>";
		rect=m_rectHalf;
	}
	SetWindowPos(NULL,0,0,rect.Width(),rect.Height(),SWP_NOZORDER|SWP_NOMOVE);
	m_ctrlMoreButton.SetWindowText(str);
	m_bToggleSize=!m_bToggleSize;
}