vc文件传输进度条 IProgressDialog

////////////////////////////////////////////////////////////////////// // // SHProgressWnd.cpp: implementation of the CSHProgressWnd class. // ////////////////////////////////////////////////////////////////////// // // This is a basic wrapper class for the IE 5 built-in progress dialog. // Written by Michael Dunn, mdunn at inreach dot com. // You can use it to your heart's content, just give me credit where // credit is due. I'd also appreciate an email telling me if you use // this code in a publicly-released program, just to satisfy my own // curiosity about whether folks are really using the code. // // Notes: // 1. You need to call AfxOleInit() before using this class, preferably // in your app's InitInstance() function. // ///////////////////////////////////////////////////////////////////////////// // // Release history: // Jan 31, 2000: v1.0 - First release! // ///////////////////////////////////////////////////////////////////////////// #include "stdafx.h" #include "IProgDlg.h" #include "SHProgressWnd.h" #include <atlconv.h> #ifdef _DEBUG #undef THIS_FILE static char THIS_FILE[]=__FILE__; #define new DEBUG_NEW #endif // Uncomment these lines if you get unresolved external errors on these // two GUIDs. //extern "C" const GUID CLSID_ProgressDialog = {0xf8383852, 0xfcd3, 0x11d1, 0xa6, 0xb9, 0x0, 0x60, 0x97, 0xdf, 0x5b, 0xd4}; //extern "C" const GUID IID_IProgressDialog = {0xebbc7c04, 0x315e, 0x11d2, 0xb6, 0x2f, 0x0, 0x60, 0x97, 0xdf, 0x5b, 0xd4}; ////////////////////////////////////////////////////////////////////// // CSHProgressWnd Construction/Destruction CSHProgressWnd::CSHProgressWnd() : m_bValid ( false ), m_bDlgVisible ( false ), m_dwDlgFlags ( PROGDLG_NORMAL ), m_dwLastMaxProgress (0), m_u64LastMaxProgress (0), m_pIDlg ( NULL ) { HRESULT hr; hr = CoCreateInstance ( CLSID_ProgressDialog, NULL, CLSCTX_INPROC_SERVER, IID_IProgressDialog, (void**) &m_pIDlg ); if ( SUCCEEDED(hr) ) m_bValid = true; } CSHProgressWnd::~CSHProgressWnd() { if ( m_bValid ) { if ( m_bDlgVisible ) m_pIDlg->StopProgressDialog(); m_pIDlg->Release(); } } ////////////////////////////////////////////////////////////////////// // CSHProgressWnd dialog setup functions // SetTitle: Sets the text that appears in the dialog caption bar. void CSHProgressWnd::SetTitle ( LPCTSTR szTitle ) { USES_CONVERSION; ASSERT ( AfxIsValidString ( szTitle )); ASSERT ( m_bValid ); m_pIDlg->SetTitle ( T2COLE(szTitle) ); } // SetAnimation: Specifies the module that contains an AVI resource, // and the resource ID. void CSHProgressWnd::SetAnimation ( HINSTANCE hinst, UINT uRsrcID ) { ASSERT ( m_bValid ); m_pIDlg->SetAnimation ( hinst, uRsrcID ); } // SetAnimation: Specifies the resource ID of an AVI resource. The // module handle is the value returned by AfxGetResourceHandle(). void CSHProgressWnd::SetAnimation ( UINT uRsrcID ) { ASSERT ( m_bValid ); m_pIDlg->SetAnimation ( AfxGetResourceHandle(), uRsrcID ); } // SetCancelMessage: Specifies text that the dialog will display on // line 3 if the user clicks the Cancel button. void CSHProgressWnd::SetCancelMessage ( LPCTSTR szMessage ) { USES_CONVERSION; ASSERT ( m_bValid ); ASSERT ( AfxIsValidString ( szMessage )); m_pIDlg->SetCancelMsg ( T2COLE(szMessage), NULL ); } // SetCalculateTime: Sets whether the dialog will estimate the time remaining // before the maximum progress value is reached. Passing true makes line // 3 unavailable to SetLineText(). void CSHProgressWnd::SetCalculateTime ( bool bCalculate /*=true*/ ) { m_dwDlgFlags &= ~(PROGDLG_NOTIME | PROGDLG_AUTOTIME); if ( bCalculate ) m_dwDlgFlags |= PROGDLG_AUTOTIME; else m_dwDlgFlags |= PROGDLG_NOTIME; } // SetAllowMinimize: Sets whether the dialog will have a minimize button. // **NOTE** This is currently broken (in the COM object itself), and the // dialog will always have a minimize button. void CSHProgressWnd::SetAllowMinimize ( bool bAllow /*=true*/ ) { if ( bAllow ) m_dwDlgFlags &= ~PROGDLG_NOMINIMIZE; else m_dwDlgFlags |= PROGDLG_NOMINIMIZE; } // SetShowProgressBar: Sets whether the dialog will have a progress bar. void CSHProgressWnd::SetShowProgressBar ( bool bShow /*=true*/ ) { if ( bShow ) m_dwDlgFlags &= ~PROGDLG_NOPROGRESSBAR; else m_dwDlgFlags |= PROGDLG_NOPROGRESSBAR; } ////////////////////////////////////////////////////////////////////// // CSHProgressWnd - showing the dialog // ShowModal: Shows the dialog as a modal window. pwndParent is a pointer // to the parent window. Returns an HRESULT - test with the SUCCEEDED() // macro to determine if the dialog was created successfully. If the // return value is a failure HRESULT, it indicates the error return from // IProgressDialog::StartProgressDialog() HRESULT CSHProgressWnd::ShowModal ( CWnd* pwndParent ) { HRESULT hr; ASSERT ( m_bValid ); ASSERT_VALID ( pwndParent ); hr = m_pIDlg->StartProgressDialog ( pwndParent->GetSafeHwnd(), NULL, m_dwDlgFlags | PROGDLG_MODAL, NULL ); if ( SUCCEEDED(hr) ) { m_bDlgVisible = true; } return hr; } // ShowModeless: Shows the dialog as a modeless window. pwndParent is a pointer // to the parent window. Returns an HRESULT - test with the SUCCEEDED() // macro to determine if the dialog was created successfully. If the // return value is a failure HRESULT, it indicates the error return from // IProgressDialog::StartProgressDialog() HRESULT CSHProgressWnd::ShowModeless ( CWnd* pwndParent ) { HRESULT hr; ASSERT ( m_bValid ); ASSERT_VALID ( pwndParent ); hr = m_pIDlg->StartProgressDialog ( pwndParent->GetSafeHwnd(), NULL, m_dwDlgFlags, NULL ); if ( SUCCEEDED(hr) ) { m_bDlgVisible = true; } return hr; } ////////////////////////////////////////////////////////////////////// // CSHProgressWnd - updating the progress // SetLineText: Sets one of the three lines of text in the dialog. // Parameters: // dwLine: Must be 1, 2, or 3. The first two lines are above the progress // bar, and the third line is below the progress bar. Line 3 is // unavailable if the dialog is showing the estimated time remaining. // szText: Text to display. // bCompactPath: Pass true if szText is a file name or path. The dialog // will shorten the path if necessary to make it fit in the // dialog. void CSHProgressWnd::SetLineText ( DWORD dwLine, LPCTSTR szText, bool bCompactPath /*=false*/ ) { USES_CONVERSION; ASSERT ( AfxIsValidString ( szText )); ASSERT ( dwLine >= 1 && dwLine <= 3 ); ASSERT ( m_bValid ); m_pIDlg->SetLine ( dwLine, T2COLE(szText), bCompactPath, NULL ); } // UpdateProgress: Sets the dialog's progress bar. The current and max progress // values are limited to DWORDs. // Parameters: // dwProgress: The current progress value. // dwMax: The maximum progress value (representing completion) // Note: // You only have to call this once to set the max value. Afterwards, you // can call UpdateProgress(DWORD dwProgress) as long as the max value // doesn't change. void CSHProgressWnd::UpdateProgress ( DWORD dwProgress, DWORD dwMax ) { ASSERT ( m_bValid ); ASSERT ( 0 != dwMax ); m_dwLastMaxProgress = dwMax; m_u64LastMaxProgress = 0; m_pIDlg->SetProgr