alldiary.cpp

实现简单的日记本的程序

// ALLDiary.cpp : implementation file
//

#include "stdafx.h"
#include "MyDiary.h"
#include "ALLDiary.h"

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

/////////////////////////////////////////////////////////////////////////////
// CALLDiary dialog


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


void CALLDiary::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CALLDiary)
	DDX_Control(pDX, IDC_LIST, m_list);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CALLDiary, CDialog)
	//{{AFX_MSG_MAP(CALLDiary)
	ON_BN_CLICKED(IDC_BUTTON_DEL, OnButtonDel)
	ON_BN_CLICKED(IDC_BUTTON_REMOVEALL, OnButtonRemoveall)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CALLDiary message handlers

BOOL CALLDiary::OnInitDialog() 
{
	CDialog::OnInitDialog();
	CMyDiaryApp *pApp = (CMyDiaryApp *)AfxGetApp();
    
	m_list.SetBkColor(RGB(0,128,128));
	m_list.SetTextBkColor(RGB(0,128,128));
	m_list.SetTextColor(RGB(255,255,0));

	m_list.SetExtendedStyle( LVS_EX_GRIDLINES | LVS_EX_FULLROWSELECT | LVS_EX_HEADERDRAGDROP );
	TCHAR szBuf[20];//tchar,16bit的符号，而char是8bit,CString is based on the tchar data type.
	LV_COLUMN lvc;
	
	int i;
	for ( i = 0; i < 4; i++ )
	{
		
		switch(i)
		{
			case 0:
				wsprintf(szBuf, _T("日期"));
				//_T(_Text),Generic-Text Data Type,
				//meaning converts following character or string to its Unicode counterpart 
				lvc.cx = 120;
				break;
			case 1:
				wsprintf(szBuf, _T("星期") );
				lvc.cx = 70;
				break;
			case 2:
				wsprintf(szBuf, _T("天气") );
				lvc.cx = 50;
				break;
			case 3:
				wsprintf(szBuf, _T("内容") );
				lvc.cx = 200;
			break;
		}
		lvc.mask     = LVCF_FMT | LVCF_SUBITEM | LVCF_TEXT | LVCF_WIDTH;
		//The mask member specifies which column attributes to retrieve
		lvc.fmt      = LVCFMT_LEFT;
		lvc.pszText  =szBuf;
        //If the mask member specifies the LVCF_TEXT value, 
		//the pszText member must contain the address of the buffer that receives the item text 

		lvc.iSubItem = i;         
		
		m_list.InsertColumn( i, &lvc );
	}
	
	WORD nCount;//word,16 bit无符号整数
	POSITION pos;//position,A value used to denote the position of an element in a collection
	CString my_date;
    
    
	
    nCount = (WORD)pApp->m_diaryList.GetCount();//返回链表中的元素个数
	pos = pApp->m_diaryList.GetHeadPosition();//返回表头结点位置
	for(int k = 0; k < nCount && pos != NULL; k++)
	{
	   CMyDiary* pMyDiary = pApp->m_diaryList.GetNext(pos);
	   m_list.InsertItem(k,LPSTR_TEXTCALLBACK);
	   my_date = pApp->TimetoCString(pMyDiary->m_TDate);
	   m_list.SetItemText(k, 0, my_date);
	   m_list.SetItemText(k, 1, pMyDiary->m_strWeek);
	   m_list.SetItemText(k, 2, pMyDiary->m_strWeather);
	   m_list.SetItemText(k, 3, pMyDiary->m_strBody);
	}
	
	
	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}

void CALLDiary::OnButtonDel() 
{
	// TODO: Add your control notification handler code here
	int nSel;
	POSITION pos;
	CMyDiaryApp *pApp = (CMyDiaryApp *)AfxGetApp();
	if(FindMyDiary(nSel, pos))
	{
        pApp->m_diaryList.RemoveAt(pos);//删除指定位置处的结点
		m_list.DeleteItem(nSel);
		pApp->onSave();
	}
	else
	{
		MessageBox("错误","错误", MB_OK);
	}
}

void CALLDiary::OnButtonRemoveall() 
{
	// TODO: Add your control notification handler code here
	CMyDiaryApp *pApp = (CMyDiaryApp *)AfxGetApp();
    pApp->m_diaryList.RemoveAll();
	m_list.DeleteAllItems();
	pApp->onSave();
}

void CALLDiary::OnOK() 
{
	// TODO: Add extra validation here
	CMyDiaryApp *pApp = (CMyDiaryApp *)AfxGetApp();
    int nSel;
	POSITION pos;
	POSITION pos1 = m_list.GetFirstSelectedItemPosition();
	//POSITION GetFirstSelectedItemPosition( ) const;
    //Return Value
    //A POSITION value that can be used for iteration or object pointer retrieval; 
    //NULL if no items are selected.
	if (pos1 == NULL)
	{
		MessageBox("请先选择所要查看的记录！","提示",MB_OK);
	}
	else
	{
	   nSel = m_list.GetNextSelectedItem(pos1);
	   //return the index of the next selected item in the list view control.
	   pos = pApp->m_diaryList.FindIndex(nSel);
	   //找到指定结点处的数据
	   pApp->m_pos = pos;
	   pApp->is_old = TRUE;
	   CDialog::OnOK();
	}
}

void CALLDiary::OnCancel() 
{
	// TODO: Add extra cleanup here
	
	CDialog::OnCancel();
}

int CALLDiary::FindMyDiary(int& nSel, POSITION& pos)
{
    CMyDiaryApp *pApp = (CMyDiaryApp *)AfxGetApp();
	POSITION pos1 = m_list.GetFirstSelectedItemPosition();
	if (pos1 == NULL)
	{
		MessageBox("请先选择所要删除的记录！","提示",MB_OK);
		return NULL;
	}
	else
	{
	   nSel = m_list.GetNextSelectedItem(pos1);
	}

	pos = pApp->m_diaryList.FindIndex(nSel);
	ASSERT(pos != NULL);
	return 1;
}