httpsampledlg.cpp

《Visual C++.NET MFC类库应用详解》程序实例

// HttpSampleDlg.cpp : 实现文件
//

#include "stdafx.h"
#include "HttpSample.h"
#include "HttpSampleDlg.h"
#include <afxinet.h>

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// 用于应用程序“关于”菜单项的 CAboutDlg 对话框

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// 对话框数据
	enum { IDD = IDD_ABOUTBOX };

	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV 支持

// 实现
protected:
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
END_MESSAGE_MAP()


// CHttpSampleDlg 对话框



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

void CHttpSampleDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	DDX_Control(pDX, IDC_EDIT1, m_Edit);
//	DDX_Control(pDX, IDC_EDIT2, m_webSite);
}

BEGIN_MESSAGE_MAP(CHttpSampleDlg, CDialog)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
	ON_EN_CHANGE(IDC_EDIT2, OnEnChangeEdit2)
	ON_BN_CLICKED(IDOK, OnBnClickedOk)
END_MESSAGE_MAP()


// CHttpSampleDlg 消息处理程序

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

	// 将\“关于...\”菜单项添加到系统菜单中。

	// IDM_ABOUTBOX 必须在系统命令范围内。
	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);
		}
	}

	// 设置此对话框的图标。当应用程序主窗口不是对话框时，框架将自动
	//  执行此操作
	SetIcon(m_hIcon, TRUE);			// 设置大图标
	SetIcon(m_hIcon, FALSE);		// 设置小图标

	// TODO：在此添加额外的初始化代码
	
	return TRUE;  // 除非设置了控件的焦点，否则返回 TRUE
}

void CHttpSampleDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// 如果向对话框添加最小化按钮，则需要下面的代码
//  来绘制该图标。对于使用文档/视图模型的 MFC 应用程序，
//  这将由框架自动完成。

void CHttpSampleDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // 用于绘制的设备上下文

		SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);

		// 使图标在工作矩形中居中
		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;

		// 绘制图标
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

//当用户拖动最小化窗口时系统调用此函数取得光标显示。
HCURSOR CHttpSampleDlg::OnQueryDragIcon()
{
	return static_cast<HCURSOR>(m_hIcon);
}

void CHttpSampleDlg::OnEnChangeEdit2()
{
	// TODO:  在此添加控件通知处理程序代码
    GetDlgItemText(IDC_EDIT2,url);  
}

void CHttpSampleDlg::OnBnClickedOk()
{
	// TODO: 在此添加控件通知处理程序代码
    CInternetSession session("My Session");
 	CString result;
    try
    {
        CString str,strObject;
		CHttpFile* pFile = (CHttpFile*)session.OpenURL(url);
/*
		INTERNET_PORT nPort=INTERNET_DEFAULT_HTTP_PORT;
		CHttpConnection* pServer=session.GetHttpConnection(url,nPort);
		CHttpFile* pFile = pServer->OpenRequest(CHttpConnection::HTTP_VERB_GET, strObject);
        pFile->AddRequestHeaders(strObject);
        pFile->SendRequest();
 		DWORD dwRet;
        pFile->QueryInfoStatusCode(dwRet);
        if (dwRet == HTTP_STATUS_OK)
        {
*/
			while(pFile->ReadString(str))
            {
                result+=str;
            }
            pFile->Close();
//		    pServer->Close();
//        }
    }
    catch (CInternetException* pEx)
    {
        pEx->ReportError();
    }
    session.Close();
	m_Edit.SetWindowText(result);
}