URLDownload_demo.rar_DEMO_URLDownloadToFile_urldownload

////////////////////////////////////////////////////////////////////// // // Written by Michael Dunn (mdunn at inreach dot com). Copyright and all // that stuff. Use however you like but give me credit where it's due. I'll // know if you don't. bwa ha ha ha ha! // // Release history: // December 24, 1999: Version 1.0. First release. // ////////////////////////////////////////////////////////////////////// // URLDownloadDlg.cpp : implementation file // #include "stdafx.h" #include "URLDownload.h" #include "URLDownloadDlg.h" #include "BindStatusCallback.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif static UINT gThreadProc ( void* pv ); ///////////////////////////////////////////////////////////////////////////// // 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() ///////////////////////////////////////////////////////////////////////////// // CURLDownloadDlg dialog CURLDownloadDlg::CURLDownloadDlg(CWnd* pParent /*=NULL*/) : CDialog(CURLDownloadDlg::IDD, pParent) { //{{AFX_DATA_INIT(CURLDownloadDlg) m_uTimeout = 0; //}}AFX_DATA_INIT // Note that LoadIcon does not require a subsequent DestroyIcon in Win32 m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); } void CURLDownloadDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CURLDownloadDlg) DDX_Control(pDX, IDC_TIMEOUT_SECS, m_editTimeout); DDX_Control(pDX, IDC_TIMEOUT, m_btnTimeout); DDX_Control(pDX, IDC_SPIN, m_spinner); DDX_Control(pDX, IDC_FILE, m_editFile); DDX_Control(pDX, IDC_ABOUT, m_btnAbout); DDX_Control(pDX, IDC_URL, m_editURL); DDX_Control(pDX, IDCANCEL, m_btnExit); DDX_Control(pDX, IDC_STOP, m_btnStop); DDX_Control(pDX, IDC_START, m_btnStart); DDX_Control(pDX, IDC_PROGRESS, m_progress); DDX_Control(pDX, IDC_IE_STATUS, m_stIEMsg); DDX_Control(pDX, IDC_CUSTOM_STATUS, m_stCustomMsg); DDX_Text(pDX, IDC_TIMEOUT_SECS, m_uTimeout); //}}AFX_DATA_MAP } BEGIN_MESSAGE_MAP(CURLDownloadDlg, CDialog) //{{AFX_MSG_MAP(CURLDownloadDlg) ON_WM_SYSCOMMAND() ON_BN_CLICKED(IDC_START, OnStart) ON_BN_CLICKED(IDC_STOP, OnStop) ON_BN_CLICKED(IDC_ABOUT, OnAbout) ON_BN_CLICKED(IDC_TIMEOUT, OnClickedTimeout) //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CURLDownloadDlg message handlers BOOL CURLDownloadDlg::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 // Init & pre-fill some of the dlg controls. m_spinner.SetRange ( 1, 120 ); m_progress.SetRange ( 0, 100 ); // Fill the URL editbox with "http://" m_editURL.SetWindowText ( _T("http://") ); // Fill the file editbox with the user's MyDocs directory. LPITEMIDLIST pidl; LPMALLOC pMalloc; TCHAR szDocsDir [MAX_PATH]; if ( SUCCEEDED( SHGetSpecialFolderLocation ( NULL, CSIDL_PERSONAL, &pidl ))) { if ( SHGetPathFromIDList ( pidl, szDocsDir )) { lstrcat ( szDocsDir, _T("\\") ); m_editFile.SetWindowText ( szDocsDir ); } if ( SUCCEEDED( SHGetMalloc ( &pMalloc ))) { pMalloc->Free ( pidl ); pMalloc->Release(); } } // Set the focus to the URL edit box. GotoDlgCtrl ( &m_editURL ); m_editURL.SetSel ( -1, -1 ); return FALSE; // return TRUE unless you set the focus to a control } void CURLDownloadDlg::OnSysCommand(UINT nID, LPARAM lParam) { if ((nID & 0xFFF0) == IDM_ABOUTBOX) { CAboutDlg dlgAbout; dlgAbout.DoModal(); } else { CDialog::OnSysCommand(nID, lParam); } } ///////////////////////////////////////////////////////////////////////////// // CURLDownloadDlg command handlers void CURLDownloadDlg::OnOK() { // Do nothing - this is just here to prevent the dlg from closing if // the user hits the Enter key. } void CURLDownloadDlg::OnStart() { CWinThread* pWorkerThread; UpdateData(); if ( m_editURL.GetWindowTextLength() == 0 ) { AfxMessageBox ( _T("Please enter a URL.") ); return; } if ( m_editURL.GetWindowTextLength() == 0 ) { AfxMessageBox ( _T("Please enter a filename.") ); return; } // Create our worker thread. It won't start until we disable all of the // dialog controls. pWorkerThread = AfxBeginThread ( gThreadProc, this, THREAD_PRIORITY_NORMAL, 0, CREATE_SUSPENDED ); // Note: Yeah I know that it's BAD to pass a CWnd object between threads. // I forgot about that rule when I wrote the above call, and it turns out // that I got lucky and it works. All the stuff the worker thread does // involves just sending messages to window handles. Since accessing the // data member CWnd::m_hWnd is safe to do across threads, nothing ever // asserted to alert me of this mistake. // Since I have finished this sample app and just now noticed this mistake, // I;m gonna be lazy and not fix it. :D if ( NULL != pWorkerThread ) { g_fAbortDownload = 0; m_editURL. EnableWindow ( FALSE ); m_editFile. EnableWindow ( FALSE ); m_editTimeout.EnableWindow ( FALSE ); m_btnStart. EnableWindow ( FALSE ); m_btnStop. EnableWindow (); m_btnExit. EnableWindow ( FALSE ); m_btnAbout. EnableWindow ( FALSE ); m_btnTimeout. EnableWindow ( FALSE ); m_spinner. EnableWindow ( FALSE ); GotoDlgCtrl ( &m_btnStop ); // Kick off the download! pWorkerThread->ResumeThread(); } else { AfxMessageBox ( _T("Couldn't create worker thread!"), MB_ICONERROR ); } } void CURLDownloadDlg::OnStop() { InterlockedExchange ( &g_fAbortDownload, 1 ); } void CURLDownloadDlg::OnAbout() { CAboutDlg dlgAbout; dlgAbout.DoModal(); } ///////////////////////////////////////////////////////////////////////////// // CURLDownloadDlg message handlers // Handler for BN_CLICKED from the "Use time limit" checkbox. void CURLDownloadDlg::OnClickedTimeout() { UpdateTimeoutCtrls(); } // UpdateTimeoutCtrls(): Enabl