cityzonedlg.cpp

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// CityZoneDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Ex_Ctrl3SDI.h"
#include "CityZoneDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CCityZoneDlg dialog


CCityZoneDlg::CCityZoneDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CCityZoneDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CCityZoneDlg)
	m_strZip = _T("");
	m_strZone = _T("");
	m_strCity = _T("");
	//}}AFX_DATA_INIT
}


void CCityZoneDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CCityZoneDlg)
	DDX_Control(pDX, IDC_COMBO1, m_ComboBox);
	DDX_Text(pDX, IDC_EDIT_ZIP, m_strZip);
	DDX_Text(pDX, IDC_EDIT_ZONE, m_strZone);
	DDX_CBString(pDX, IDC_COMBO1, m_strCity);
	DDV_MaxChars(pDX, m_strCity, 20);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CCityZoneDlg, CDialog)
	//{{AFX_MSG_MAP(CCityZoneDlg)
	ON_BN_CLICKED(IDC_BUTTON_ADD, OnButtonAdd)
	ON_BN_CLICKED(IDC_BUTTON_CHANGE, OnButtonChange)
	ON_CBN_SELCHANGE(IDC_COMBO1, OnSelchangeCombo1)
	ON_WM_DESTROY()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCityZoneDlg message handlers

void CCityZoneDlg::OnButtonAdd() 
{
	// TODO: Add your control notification handler code here
	if (!IsValidate()) return;
	int nIndex = m_ComboBox.FindStringExact( -1, m_strCity );
	if (nIndex != CB_ERR ){
		MessageBox("该城市已添加！");
		return;
	}
	nIndex = m_ComboBox.AddString( m_strCity );
	CString strData;
	strData.Format("%s,%s", m_strZip, m_strZone);
	m_ComboBox.SetItemDataPtr( nIndex, new CString(strData) );	
}

BOOL CCityZoneDlg::IsValidate()
{
	UpdateData();
	m_strCity.TrimLeft();
	if (m_strCity.IsEmpty()){
		MessageBox("城市名输入无效！");
		return FALSE;
	}
	m_strZip.TrimLeft();
	if (m_strZip.IsEmpty())	{
		MessageBox("邮政编码输入无效！");
		return FALSE;
	}
	m_strZone.TrimLeft();
	if (m_strZone.IsEmpty())	{
		MessageBox("区号输入无效！");
		return FALSE;
	}
	return TRUE;
}

void CCityZoneDlg::OnButtonChange() 
{
	// TODO: Add your control notification handler code here
	if (!IsValidate()) return;
	int nIndex = m_ComboBox.FindStringExact( -1, m_strCity );
	if (nIndex != CB_ERR ){
		delete (CString*)m_ComboBox.GetItemDataPtr( nIndex );
		CString strData;
		strData.Format("%s,%s", m_strZip, m_strZone);
		m_ComboBox.SetItemDataPtr( nIndex, new CString(strData) );	
	}
}

void CCityZoneDlg::OnSelchangeCombo1() 
{
	// TODO: Add your control notification handler code here
	int nIndex = m_ComboBox.GetCurSel();
	if (nIndex != CB_ERR ){
		m_ComboBox.GetLBText( nIndex, m_strCity );
		CString strData;
		strData = *(CString*)m_ComboBox.GetItemDataPtr( nIndex );
		// 分解字符串
		int n = strData.Find(',');
		m_strZip = strData.Left( n );	// 前面的n个字符
		m_strZone = strData.Mid( n+1 );	// 从中间第n+1字符到未尾的字符串
		UpdateData( FALSE );
	}
}

void CCityZoneDlg::OnDestroy() 
{
	for (int nIndex = m_ComboBox.GetCount()-1; nIndex>=0; nIndex--)
	{
		// 删除所有与列表项相关联的CString数据，并释放内存
 		delete (CString *)m_ComboBox.GetItemDataPtr(nIndex);	
	}
	CDialog::OnDestroy();
}