128 lines
3.8 KiB
C++
128 lines
3.8 KiB
C++
/*-----------------------------------------------------------------------------
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dlapi.cpp
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Wrapper for softlinking to download DLL
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Copyright (C) 1996 Microsoft Corporation
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All rights reserved.
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Authors:
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ChrisK ChrisKauffman
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History:
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7/22/96 ChrisK Cleaned and formatted
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-----------------------------------------------------------------------------*/
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#include "pch.hpp"
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#include "debug.h"
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#include "icwdl.h"
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#include "dlapi.h"
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// ############################################################################
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CDownLoadAPI::CDownLoadAPI()
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{
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m_hDLL = NULL;
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m_pfnDownLoadInit = NULL;
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m_pfnDownLoadCancel = NULL;
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m_pfnDownLoadExecute = NULL;
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m_pfnDownLoadClose = NULL;
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m_pfnDownLoadSetStatus = NULL;
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m_pfnDownLoadProcess = NULL;
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}
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// ############################################################################
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CDownLoadAPI::~CDownLoadAPI()
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{
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if (m_hDLL) FreeLibrary(m_hDLL);
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m_hDLL = NULL;
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m_pfnDownLoadInit = NULL;
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m_pfnDownLoadCancel = NULL;
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m_pfnDownLoadExecute = NULL;
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m_pfnDownLoadClose = NULL;
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m_pfnDownLoadSetStatus = NULL;
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m_pfnDownLoadProcess = NULL;
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}
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// ############################################################################
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HRESULT CDownLoadAPI::LoadAPI(LPSTR szApiName, FARPROC* pfp)
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{
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Assert(szApiName && pfp);
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if (!m_hDLL)
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m_hDLL = LoadLibrary(DOWNLOAD_LIBRARY);
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if (m_hDLL && !(*pfp))
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{
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*pfp = GetProcAddress(m_hDLL, szApiName);
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if (*pfp)
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return ERROR_SUCCESS;
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else
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return GetLastError();
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} else {
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return GetLastError();
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}
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}
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// ############################################################################
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HRESULT CDownLoadAPI::DownLoadInit(PTSTR pszUrl, DWORD_PTR * lpCDialingDlg, DWORD_PTR *lpdwDownload, HWND hwndParent)
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{
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HRESULT hr = ERROR_DLL_NOT_FOUND;
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LoadAPI(DOWNLOADINIT,(FARPROC*)&m_pfnDownLoadInit);
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if (m_pfnDownLoadInit)
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hr = (m_pfnDownLoadInit)(pszUrl, lpCDialingDlg, lpdwDownload, hwndParent);
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return hr;
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}
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// ############################################################################
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HRESULT CDownLoadAPI::DownLoadCancel(DWORD_PTR dwDownload)
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{
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HRESULT hr = ERROR_DLL_NOT_FOUND;
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LoadAPI(DOWNLOADCANCEL,(FARPROC*)&m_pfnDownLoadCancel);
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if (m_pfnDownLoadCancel)
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hr = (m_pfnDownLoadCancel)(dwDownload);
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return hr;
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}
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// ############################################################################
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HRESULT CDownLoadAPI::DownLoadExecute(DWORD_PTR dwDownload)
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{
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HRESULT hr = ERROR_DLL_NOT_FOUND;
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LoadAPI(DOWNLOADEXECUTE,(FARPROC*)&m_pfnDownLoadExecute);
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if (m_pfnDownLoadExecute)
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hr = (m_pfnDownLoadExecute)(dwDownload);
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return hr;
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}
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// ############################################################################
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HRESULT CDownLoadAPI::DownLoadProcess(DWORD_PTR dwDownload)
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{
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HRESULT hr = ERROR_DLL_NOT_FOUND;
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LoadAPI(DOWNLOADPROCESS,(FARPROC*)&m_pfnDownLoadProcess);
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if (m_pfnDownLoadProcess)
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hr = (m_pfnDownLoadProcess)(dwDownload);
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return hr;
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}
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// ############################################################################
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HRESULT CDownLoadAPI::DownLoadClose(DWORD_PTR dwDownload)
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{
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HRESULT hr = ERROR_DLL_NOT_FOUND;
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LoadAPI(DOWNLOADCLOSE,(FARPROC*)&m_pfnDownLoadClose);
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if (m_pfnDownLoadClose)
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hr = (m_pfnDownLoadClose)(dwDownload);
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return hr;
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}
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// ############################################################################
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HRESULT CDownLoadAPI::DownLoadSetStatus(DWORD_PTR dwDownload, INTERNET_STATUS_CALLBACK fnCallback)
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{
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HRESULT hr = ERROR_DLL_NOT_FOUND;
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LoadAPI(DOWNLOADSETSTATUS,(FARPROC*)&m_pfnDownLoadSetStatus);
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if (m_pfnDownLoadSetStatus)
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// jmazner 10/2/96 Normandy # 8493
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// ICWDL.DLL's DownLoadSetStatus only has two parameters!!!
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//hr = (m_pfnDownLoadSetStatus)(dwDownload, fnCallback, dwContext);
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hr = (m_pfnDownLoadSetStatus)(dwDownload, fnCallback);
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return hr;
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}
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