checkdragdlg.cpp

这些源代码

// CheckDragDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Controls.h"
#include "CheckDragDlg.h"

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

struct CHECKBOXDATA
	{
	bool	bCheck;
	DWORD	dwData;
	CString	strData;
	};

/////////////////////////////////////////////////////////////////////////////
// CCheckDragDlg dialog

CCheckDragDlg::CCheckDragDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CCheckDragDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CCheckDragDlg)
	m_bAuto = TRUE;
	m_nCheckBoxType = 0;
	//}}AFX_DATA_INIT
	m_dwCheckListStyle = BS_AUTOCHECKBOX;
}


void CCheckDragDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CCheckDragDlg)
	DDX_Control(pDX, IDC_DRAGLIST, m_DragList);
	DDX_Control(pDX, IDC_CHECKLIST, m_CheckList);
	DDX_Check(pDX, IDC_CHECK_AUTOBOX, m_bAuto);
	DDX_Radio(pDX, IDC_CHECK_CHECKBOX, m_nCheckBoxType);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CCheckDragDlg, CDialog)
	//{{AFX_MSG_MAP(CCheckDragDlg)
	ON_BN_CLICKED(IDC_CHECK_3STATEBOX, OnCheck3statebox)
	ON_BN_CLICKED(IDC_CHECK_CHECKBOX, OnCheckCheckbox)
	ON_BN_CLICKED(IDC_CHECK_AUTOBOX, OnCheckAutobox)
	ON_LBN_DBLCLK(IDC_CHECKLIST, OnDblclkChecklist)
	//}}AFX_MSG_MAP
	ON_COMMAND(IDCANCEL, OnCancel)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCheckDragDlg message handlers

void CCheckDragDlg::OnCancel() 
{
}

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

// CCheckBoxes must be LBS_OWNERDRAWFIXED | LBS_OWNERDRAWVARIABLE
// CDragList cannot have LBS_SORT or LBS_MULTISELECT
//
//	AUTOCHECKBOX provides a box that is either checked
//	or unchecked.
//	AUTO3STATE provides a three-state checkbox. The first
//	click checks it, the second puts into an indeterminate
//	state and the third unchecks it.
//
//	Fill the lists with file names for sample data.
//
	CFont *font = GetFont();
	m_DragList.SetFont (font);
	m_CheckList.SetFont (font);
	m_CheckList.SetCheckStyle (m_dwCheckListStyle);
	LoadLists (m_DragList);
	LoadLists (m_CheckList);

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

void CCheckDragDlg::LoadLists(CListBox &lb)
{
	WIN32_FIND_DATA fd;
	HANDLE hFind;
	if ((hFind = FindFirstFile (_T("*.*"), &fd)) == NULL)
		return;	
	do
	{
		if (fd.cFileName[0] == '.')
			continue;
		lb.AddString (fd.cFileName);
	} while (FindNextFile (hFind, &fd));
	FindClose (hFind);
}

void CCheckDragDlg::OnCheck3statebox() 
{
	if (m_bAuto)
		m_dwCheckListStyle  = BS_AUTO3STATE;
	else
		m_dwCheckListStyle  = BS_3STATE;
	m_nCheckBoxType = 1;
	RecreateCheckList ();
	UpdateData (FALSE);
}

void CCheckDragDlg::OnCheckCheckbox() 
{
	if (m_bAuto)
		m_dwCheckListStyle = BS_AUTOCHECKBOX;
	else
		m_dwCheckListStyle = BS_CHECKBOX;
	m_nCheckBoxType = 0;
	RecreateCheckList ();
	UpdateData (FALSE);
}

void CCheckDragDlg::OnCheckAutobox() 
{
	UpdateData (TRUE);
	if (m_bAuto)
	{
		switch (m_dwCheckListStyle)
		{
			case BS_CHECKBOX:
				m_dwCheckListStyle = BS_AUTOCHECKBOX;
				break;
			case BS_3STATE:
				m_dwCheckListStyle = BS_AUTO3STATE;
				break;
		}
	}
	else
	{
		switch (m_dwCheckListStyle)
		{
			case BS_AUTOCHECKBOX:
				m_dwCheckListStyle = BS_CHECKBOX;
				break;
			case BS_AUTO3STATE:
				m_dwCheckListStyle = BS_3STATE;
				break;
		}
	}
	RecreateCheckList ();
}

void CCheckDragDlg::RecreateCheckList()
{
CHECKBOXDATA *cbd;

	CRect rc;
	DWORD dwStyle = m_CheckList.GetStyle ();
	DWORD dwStyleEx = m_CheckList.GetExStyle ();
	m_CheckList.GetWindowRect (&rc);
	ScreenToClient (rc);
	CFont *font = GetFont ();
	int nCount = m_CheckList.GetCount ();
	int nSel = m_CheckList.GetCurSel ();
	if (nCount)
	{
		cbd = new CHECKBOXDATA [nCount];
		for (int n = 0; n < nCount; ++n)
		{
			cbd[n].bCheck = m_CheckList.GetCheck(n) ? true : false;
			cbd[n].dwData = m_CheckList.GetItemData (n);
			m_CheckList.GetText (n, cbd[n].strData);
		}
	}
	m_CheckList.ResetContent ();
	m_CheckList.DestroyWindow ();
	m_CheckList.CreateEx (dwStyleEx, "listbox", NULL,
							dwStyle, rc, this, IDC_CHECKLIST, NULL);
//	m_CheckList.Create (LBS_OWNERDRAWFIXED | LBS_HASSTRINGS | WS_VSCROLL,
//						rc,
//						this,
//						IDC_CHECKLIST);
	m_CheckList.SetCheckStyle (m_dwCheckListStyle);
	m_CheckList.SetFont (font);
	m_CheckList.ShowWindow (SW_SHOWNORMAL);
	if (nCount)
	{
		for (int n = 0; n < nCount; ++n)
		{
			int nIndex = m_CheckList.AddString ((LPCSTR) cbd[n].strData);
			m_CheckList.SetCheck (nIndex, cbd[n].bCheck);
			m_CheckList.SetItemData (nIndex, cbd[n].dwData);
		}
		delete [] cbd;
	}
	m_CheckList.SetCurSel (nSel);
}

//
//	If auto is selected, return or we'll just be
//	unsetting a just set check.
//	By unselecting auto, we can let the user select
//	or unselect and item by double clicking anywhere
//	on the line.
//
void CCheckDragDlg::OnDblclkChecklist() 
{
	if (m_bAuto)
		return;
	int nIndex = m_CheckList.GetCurSel ();
	int nCheck = m_CheckList.GetCheck (nIndex);
	if (m_dwCheckListStyle == BS_CHECKBOX)
	{
		m_CheckList.SetCheck (nIndex, nCheck ? FALSE : TRUE);
	}
	else
	{
		++nCheck;
		if (nCheck > 2)
			nCheck = 0;
		m_CheckList.SetCheck (nIndex, nCheck);
	}
}