sortlistdlg.cpp

对control list控件实现自动排序功能

// sortlistDlg.cpp : implementation file
//

#include "stdafx.h"
#include "sortlist.h"
#include "sortlistDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CSortlistDlg dialog

CSortlistDlg::CSortlistDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CSortlistDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CSortlistDlg)
		// 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_bDragging = FALSE;
}

void CSortlistDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CSortlistDlg)
	DDX_Control(pDX, IDC_LIST1, m_clistctrl);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CSortlistDlg, CDialog)
	//{{AFX_MSG_MAP(CSortlistDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_WM_LBUTTONUP()
	ON_WM_MOUSEMOVE()
	ON_NOTIFY(NM_DBLCLK, IDC_LIST1, OnDblclkList1)
	//}}AFX_MSG_MAP
    ON_NOTIFY(LVN_BEGINDRAG, IDC_LIST1, OnBeginDrag)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CSortlistDlg message handlers

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

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon


    //List Ctrl stuff
    m_cimagelist.Create(IDB_BITMAP1, 10, 1, RGB(100,100,100));
    m_clistctrl.SetImageList(&m_cimagelist, LVSIL_SMALL); 

	LV_COLUMN lvcol;
    lvcol.mask = LVCF_SUBITEM | LVCF_TEXT | LVCF_WIDTH;
    lvcol.pszText = "#";
    lvcol.iSubItem = 0;
    lvcol.cx = 130;

    m_clistctrl.InsertColumn(0, &lvcol);

  	LV_COLUMN lvcol2;
    lvcol2.mask = LVCF_SUBITEM | LVCF_TEXT | LVCF_WIDTH;
    lvcol2.pszText = "ID";
    lvcol2.iSubItem = 1;
    lvcol2.cx = 130;

    m_clistctrl.InsertColumn(1, &lvcol2);
    int i = 0;
    int iImage = 0;
    for (int ii = 1000; ii < 1030; ii++, i++)
        {
        LV_ITEM lvi;
        lvi.mask = LVIF_TEXT | LVIF_IMAGE;
        char sz[20];
        _itoa(i, sz, 10);
        lvi.iItem = 0;
        lvi.iSubItem = 0;
        lvi.pszText = sz;
        lvi.iImage = iImage;
        if (iImage == 0)
            {
            iImage++;
            }
        else
            {
            iImage--;
            }
        int iii = m_clistctrl.InsertItem(&lvi);

        LV_ITEM lvi2;
        lvi2.mask = LVIF_TEXT;
        char sz2[20];
        _itoa(ii, sz2, 10);
        m_clistctrl.SetItemText(iii, 1, sz2);
        }

    ListView_SetExtendedListViewStyle
        (m_clistctrl.m_hWnd, LVS_EX_FULLROWSELECT | LVS_EX_GRIDLINES | LVS_EX_HEADERDRAGDROP);
    
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CSortlistDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		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 CSortlistDlg::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 CSortlistDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CSortlistDlg::OnLButtonUp(UINT nFlags, CPoint point) 
{
        if( m_bDragging )
        {
                //RELEASE THE MOUSE CAPTURE AND END THE DRAGGING
                ::ReleaseCapture();
                m_bDragging = FALSE;
                m_pDragImage->DragLeave(GetDesktopWindow());
                m_pDragImage->EndDrag();
                delete m_pDragImage;
                
                //GET THE WINDOW UNDER THE DROP POINT
                CPoint pt(point);
                ClientToScreen(&pt);
                m_pDropWnd = WindowFromPoint(pt);
                
                //DROP THE ITEM ON THE LIST
                if( m_pDropWnd->IsKindOf(RUNTIME_CLASS(CListCtrl)) )
                        DropItemOnList();
        }

	CDialog::OnLButtonUp(nFlags, point);
}
void CSortlistDlg::OnBeginDrag(NMHDR* pnmhdr, LRESULT* pResult)
{ 
        //RECORD THE INDEX OF THE ITEM BEIGN DRAGGED AS m_nDragIndex
        m_nDragIndex = ((NM_LISTVIEW *)pnmhdr)->iItem;
        
        //CREATE A DRAG IMAGE FROM THE CENTER POINT OF THE ITEM IMAGE
        POINT pt;
        pt.x = 8;
        pt.y = 8;
        m_pDragImage = m_clistctrl.CreateDragImage(m_nDragIndex, &pt);
        m_pDragImage->BeginDrag(0, CPoint (8, 8));
        m_pDragImage->DragEnter(
                GetDesktopWindow(), ((NM_LISTVIEW *)pnmhdr)->ptAction);
        
        //SET THE FLAGS INDICATING A DRAG IN PROGRESS
        m_bDragging = TRUE;
        m_nDropIndex = -1;
        m_pDropWnd = &m_clistctrl;
        
        //CAPTURE ALL MOUSE MESSAGES IN CASE THE USER DRAGS OUTSIDE OF THE VIEW
        SetCapture();
}

void CSortlistDlg::OnMouseMove(UINT nFlags, CPoint point) 
{
        if( m_bDragging )
        {
                m_ptDropPoint = point;
                ClientToScreen(&m_ptDropPoint);
                
                //MOVE THE DRAG IMAGE
                m_pDragImage->DragMove(m_ptDropPoint);
                
                //TEMPORARILY UNLOCK WINDOW UPDATES
                m_pDragImage->DragShowNolock(FALSE);                
                
                //CONVERT THE DROP POINT TO CLIENT CO-ORDIANTES
                m_pDropWnd = WindowFromPoint(m_ptDropPoint);
                m_pDropWnd->ScreenToClient(&m_ptDropPoint);

                //SCROLL VIEW IF NECESSARY
                int iOverItem = m_clistctrl.HitTest(m_ptDropPoint);
                int iTopItem = m_clistctrl.GetTopIndex();
                int iBottomItem = iTopItem + m_clistctrl.GetCountPerPage() - 1;
                if (iOverItem == iTopItem && iTopItem != 0)
                    {
                    m_clistctrl.EnsureVisible(iOverItem - 1, false);
                    ::UpdateWindow(m_clistctrl.m_hWnd);
                    }
                else if (iOverItem == iBottomItem && iBottomItem != (m_clistctrl.GetItemCount() - 1))
                    {
                    m_clistctrl.EnsureVisible(iOverItem + 1, false);
                    ::UpdateWindow(m_clistctrl.m_hWnd);
                    }

                //LOCK WINDOW UPDATES
                m_pDragImage->DragShowNolock(TRUE);
        }
        
	CDialog::OnMouseMove(nFlags, point);
}

void CSortlistDlg::DropItemOnList()
{
        //GET THE DROP INDEX
        m_ptDropPoint.y += 10;
        m_ptDropPoint.x = 0;//allows dropping to right of last column
        m_nDropIndex = m_clistctrl.HitTest(m_ptDropPoint);
        
        //GET INFORMATION ON THE DRAGGED ITEM BY SETTING AN LV_ITEM STRUCTURE
        //AND THEN CALLING GetItem TO FILL IT IN
        char szLabel[256];
        LV_ITEM lvi;
        ZeroMemory(&lvi, sizeof(LV_ITEM));
        lvi.mask = LVIF_TEXT | LVIF_IMAGE;
        lvi.stateMask = LVIS_DROPHILITED | LVIS_FOCUSED | LVIS_SELECTED;
        lvi.pszText = szLabel;
        lvi.iItem = m_nDragIndex;
        lvi.cchTextMax = 255;
        m_clistctrl.GetItem(&lvi);
        
        //INSERT THE DROPPED ITEM
        if(m_nDropIndex < 0) m_nDropIndex = m_clistctrl.GetItemCount();
        lvi.iItem = m_nDropIndex;
        m_clistctrl.InsertItem(&lvi);
        
        //FILL IN ALL OF THE COLUMNS
        CHeaderCtrl* pHeader = (CHeaderCtrl*)m_clistctrl.GetDlgItem(0);
        int nColumnCount = pHeader->GetItemCount();
        lvi.mask = LVIF_TEXT;
        lvi.iItem = m_nDropIndex;
        //INDEX OF DRAGGED ITEM WILL CHANGE IF ITEM IS DROPPED ABOVE ITSELF
        if(m_nDragIndex > m_nDropIndex) m_nDragIndex++;
        for(int col=1; col < nColumnCount; col++)
        {
                strcpy(lvi.pszText, (LPCTSTR)(m_clistctrl.GetItemText(m_nDragIndex,
                        col)));
                lvi.iSubItem = col;
                m_clistctrl.SetItem(&lvi);
        }
        
        //DELETE THE ITEM THAT WAS DRAGGED FROM ITS ORIGINAL LOCATION
        m_clistctrl.DeleteItem(m_nDragIndex);

        //FIX HEADER - it disappears if item was scrolled & dropped;
        pHeader->RedrawWindow();

}

void CSortlistDlg::OnDblclkList1(NMHDR* pNMHDR, LRESULT* pResult) 
{
    
	
	*pResult = 0;
}