lhdrdlg.cpp

深入剖析Visual C++编程技术及应用实例

// Exam1_1_11Dlg.cpp : implementation file
//
// This is a part of the Microsoft Foundation Classes C++ library.
// Copyright (C) 1992-1998 Microsoft Corporation
// All rights reserved.
//
// This source code is only intended as a supplement to the
// Microsoft Foundation Classes Reference and related
// electronic documentation provided with the library.
// See these sources for detailed information regarding the
// Microsoft Foundation Classes product.

#include "stdafx.h"
#include "Exam1_1_11.h"
#include "LHdrDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CExam1_1_11Dlg dialog

CExam1_1_11Dlg::CExam1_1_11Dlg(CWnd* pParent /*=NULL*/)
	: CDialog(CExam1_1_11Dlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CExam1_1_11Dlg)
	//}}AFX_DATA_INIT
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);

	m_pImageHdrSmall = NULL;
	m_pImageListSmall = NULL;
}

CExam1_1_11Dlg::~CExam1_1_11Dlg()
{
	if( m_pImageHdrSmall != NULL)
		delete m_pImageHdrSmall;
	if( m_pImageListSmall != NULL)
		delete m_pImageListSmall;
}

void CExam1_1_11Dlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CExam1_1_11Dlg)
	DDX_Control(pDX, IDC_LISTVIEW1, m_listctrl);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CExam1_1_11Dlg, CDialog)
	//{{AFX_MSG_MAP(CExam1_1_11Dlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDABOUT, OnAbout)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CExam1_1_11Dlg message handlers

BOOL CExam1_1_11Dlg::OnInitDialog()
{
	CExam1_1_11App     *pApp;
	CRect           rect;

	CDialog::OnInitDialog();  
	UpdateData(TRUE); 
	pApp = (CExam1_1_11App *)AfxGetApp();
	srand((unsigned) time(NULL));  // 产生随机数

	// 为列表头创建图像列表
	m_pImageHdrSmall = new CImageList();
	ASSERT(m_pImageHdrSmall != NULL);    
	m_pImageHdrSmall->Create(16, 16, ILC_MASK, 2, 2);
	m_pImageHdrSmall->Add(pApp->LoadIcon(IDI_HDRICON1));
	m_pImageHdrSmall->Add(pApp->LoadIcon(IDI_HDRICON2));

	// 为列表控件创建图像列表
	m_pImageListSmall = new CImageList();
	ASSERT(m_pImageListSmall != NULL);    // serious allocation failure checking
	m_pImageListSmall->Create(16, 16, TRUE, 4, 4);
	m_pImageListSmall->Add(pApp->LoadIcon(IDI_ICONLIST1));
	m_pImageListSmall->Add(pApp->LoadIcon(IDI_ICONLIST2));
	m_pImageListSmall->Add(pApp->LoadIcon(IDI_ICONLIST3));
	m_pImageListSmall->Add(pApp->LoadIcon(IDI_ICONLIST4));

	
	FillListCtrl();		//初始化列表控件和表头

	return FALSE;  
}

// 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 CExam1_1_11Dlg::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();
	}
}

HCURSOR CExam1_1_11Dlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CExam1_1_11Dlg::FillListCtrl()
{
	CRect           rect;
	int             iIcon, iItem, iSubItem, iActualItem;
	LV_ITEM         lvitem;
	CString         strItem1= _T("ITEM");
	CString         strItem2= _T("SUB_ITEM");
	CString         strIconDesc[4], strIconShortDesc[4];
	LPTSTR          pStrTemp1, pStrTemp2;
	CExam1_1_11App     *pApp;

	strIconDesc[0]= _T("Blue Ellipse, Yellow Triangle, Red Rectangle");
	strIconDesc[1]= _T("Yellow Ellipse, Red Triangle, Blue Rectangle");
	strIconDesc[2]= _T("Red Ellipse, Blue Triangle, Yellow Rectangle");
	strIconDesc[3]= _T("Red Ellipse, Yellow Triangle, Blue Rectangle");
	strIconShortDesc[0]= _T("BE, YT, RR (Title)");
	strIconShortDesc[1]= _T("YE, RT, BR (Title)");
	strIconShortDesc[2]= _T("RE, BT, YR (Title)");
	strIconShortDesc[3]= _T("RE, YT, BR (Title)");


	pApp = (CExam1_1_11App *)AfxGetApp();
	m_listctrl.SetImageList(m_pImageListSmall, LVSIL_SMALL);

	// 给列表框插入两列，并且让表头显示图像
	m_listctrl.GetWindowRect(&rect);
	m_listctrl.InsertColumn(0, strItem1, LVCFMT_LEFT,
		rect.Width() * 1/3, 0);
	m_listctrl.InsertColumn(1, strItem2, LVCFMT_LEFT,
		rect.Width() * 2/3, 1);
	ModifyHeaderItems();

	for (iItem = 0; iItem < 20; iItem++)  // 在视图中插入子项
		for (iSubItem = 0; iSubItem < 2; iSubItem++)
		{
			if (iSubItem == 0)
				iIcon = rand() % 4;  // 随机选择图标

			lvitem.mask = LVIF_TEXT | (iSubItem == 0? LVIF_IMAGE : 0);
			lvitem.iItem = (iSubItem == 0)? iItem : iActualItem;
			lvitem.iSubItem = iSubItem;

			// 计算表项文本长度
			pStrTemp1= strIconShortDesc[iIcon].GetBuffer(strIconShortDesc[iIcon].GetLength());
			pStrTemp2= strIconDesc[iIcon].GetBuffer(strIconDesc[iIcon].GetLength());
			lvitem.pszText = iSubItem == 0? pStrTemp1 : pStrTemp2;

			lvitem.iImage = iIcon;
			if (iSubItem == 0)
				iActualItem = m_listctrl.InsertItem(&lvitem); // 插入新表项
			else
				m_listctrl.SetItem(&lvitem); // 修改已存在的表项
		}
}

void CExam1_1_11Dlg::ModifyHeaderItems()
{
	HD_ITEM curItem;

	// 得到列表头控件的指针
	CHeaderCtrl* pHdrCtrl= NULL;
	pHdrCtrl= m_listctrl.GetHeaderCtrl();

	pHdrCtrl->SetImageList(m_pImageHdrSmall);
	// 给每个表头添加图像
	pHdrCtrl->GetItem(0, &curItem);
	curItem.mask= HDI_IMAGE | HDI_FORMAT;
	curItem.iImage= 0;
	curItem.fmt= HDF_LEFT | HDF_IMAGE | HDF_STRING;
	pHdrCtrl->SetItem(0, &curItem);

	pHdrCtrl->GetItem(1, &curItem);
	curItem.mask= HDI_IMAGE | HDI_FORMAT;
	curItem.iImage= 1;
	curItem.fmt= HDF_LEFT | HDF_IMAGE | HDF_STRING;
	pHdrCtrl->SetItem(1, &curItem);
}

// this function is used when a requested style
// LVS_NOLABELWRAP, LVS_NOCOLUMNHEADER, and LVS_NOSORTHEADER
// forces the current control to be re-created with the new style.
// this function is used when a requested style
// can be applied to the existing control, and demonstrated.
void CExam1_1_11Dlg::ChangeListCtrlStyle(DWORD dwStyle, BOOL bSetBits)
{
	CRect   rect;

	m_listctrl.GetWindowRect(&rect);
	ScreenToClient(&rect);
	ASSERT(dwStyle != 0);  // watch out for LVS_foo DEFINITIONS which are 0.
	if (bSetBits)
		m_listctrl.ModifyStyle(0, dwStyle);
	else
		m_listctrl.ModifyStyle(dwStyle, 0);

	InvalidateRect(rect);
	UpdateData(FALSE);  // send information back to the dialog
}


void CExam1_1_11Dlg::OnAbout()
{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
}