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C/C++ Source or Header  |  1996-06-24  |  5.3 KB  |  153 lines
  1. // ===========================================================================
  2. // File: DOWNLOAD.Cpp
  3. // Defines the class behaviour for CBindStatusCallback. 
  4.  
  5.  
  6. #include "stdafx.h"
  7. #include "Mainfrm.h"
  8. #include "download.h"
  9. #include "winnls.h"
  10. #include "Util.H"
  11.  
  12. // ===========================================================================
  13. //                     CBindStatusCallback Implementation
  14. // ===========================================================================
  15.  
  16. // ---------------------------------------------------------------------------
  17. // %%Function: CBindStatusCallback::CBindStatusCallback
  18. // ---------------------------------------------------------------------------
  19. CBindStatusCallback::CBindStatusCallback(CMainFrame * pMDIframewnd)
  20. {
  21.     m_pbinding = NULL;
  22.     m_pstm = NULL;
  23.     m_cRef = 1;
  24.     m_cbOld = 0;
  25.     m_pMDIframwnd=pMDIframewnd;
  26. }  // CBindStatusCallback
  27.  
  28. // ---------------------------------------------------------------------------
  29. // %%Function: CBindStatusCallback::~CBindStatusCallback
  30. // ---------------------------------------------------------------------------
  31. CBindStatusCallback::~CBindStatusCallback()
  32. {
  33.     if (m_pstm)
  34.         m_pstm->Release();
  35.     if (m_pbinding)
  36.         m_pbinding->Release();
  37. }  // ~CBindStatusCallback
  38.  
  39.  
  40. // ---------------------------------------------------------------------------
  41. // %%Function: CBindStatusCallback::QueryInterface
  42. // ---------------------------------------------------------------------------
  43.  STDMETHODIMP
  44. CBindStatusCallback::QueryInterface(REFIID riid, void** ppv)
  45. { 
  46.     *ppv = NULL;
  47.     
  48.     if (riid==IID_IUnknown || riid==IID_IBindStatusCallback)
  49.         {
  50.         *ppv = this;
  51.         AddRef();
  52.         return S_OK;
  53.         }
  54.     return E_NOINTERFACE;
  55. }  // CBindStatusCallback::QueryInterface
  56.  
  57. // ---------------------------------------------------------------------------
  58. // %%Function: CBindStatusCallback::OnStartBinding
  59. // ---------------------------------------------------------------------------
  60.  STDMETHODIMP
  61. CBindStatusCallback::OnStartBinding(DWORD grfBSCOption, IBinding* pbinding)
  62. {
  63.     m_pMDIframwnd->MyShowPane("Starting to Download File ");
  64.     return(NOERROR);
  65. }  // CBindStatusCallback::OnStartBinding
  66.  
  67. // ---------------------------------------------------------------------------
  68. // %%Function: CBindStatusCallback::GetPriority
  69. // ---------------------------------------------------------------------------
  70.  STDMETHODIMP
  71. CBindStatusCallback::GetPriority(LONG* pnPriority) 
  72. {
  73.      return(NOERROR);
  74. }  // CBindStatusCallback::GetPriority
  75.  
  76. // ---------------------------------------------------------------------------
  77. // %%Function: CBindStatusCallback::OnLowResource
  78. // ---------------------------------------------------------------------------
  79.  STDMETHODIMP
  80. CBindStatusCallback::OnLowResource(DWORD dwReserved)
  81. {
  82.       return(NOERROR);
  83. }  // CBindStatusCallback::OnLowResource
  84.  
  85. // ---------------------------------------------------------------------------
  86. // %%Function: CBindStatusCallback::OnStopBinding
  87. // ---------------------------------------------------------------------------
  88.  STDMETHODIMP
  89. CBindStatusCallback::OnStopBinding(HRESULT hrStatus, LPCWSTR pszError) 
  90. {
  91.     if (hrStatus)
  92.         m_pMDIframwnd->MyShowPane("File download Failed.");
  93.     else
  94.         m_pMDIframwnd->MyShowPane("File Downloaded");
  95.     return(NOERROR);
  96. }  // CBindStatusCallback::OnStopBinding
  97.  
  98. // ---------------------------------------------------------------------------
  99. // %%Function: CBindStatusCallback::GetBindInfo
  100. // ---------------------------------------------------------------------------
  101.  STDMETHODIMP
  102. CBindStatusCallback::GetBindInfo(DWORD* pgrfBINDF, BINDINFO* pbindInfo)
  103. {
  104.      return (NOERROR);
  105. }  // CBindStatusCallback::GetBindInfo
  106.  
  107. // ---------------------------------------------------------------------------
  108. // %%Function: CBindStatusCallback::OnDataAvailable
  109. // This function is called whenever data starts arriving. When the file download is
  110. // complete then the BSCF_LASTDATANOTIFICATION comes and you can get the local cached
  111. // File Name.
  112. // ---------------------------------------------------------------------------
  113.  STDMETHODIMP
  114.  CBindStatusCallback::OnDataAvailable
  115.  (
  116.  DWORD grfBSCF, 
  117.  DWORD dwSize, 
  118.  FORMATETC* pfmtetc, 
  119.  STGMEDIUM* pstgmed
  120.  ) 
  121.  {
  122.           return(NOERROR);
  123.  }  // CBindStatusCallback::OnDataAvailable
  124.  
  125.  
  126. // ---------------------------------------------------------------------------
  127. // %%Function: CBindStatusCallback::OnObjectAvailable
  128. // ---------------------------------------------------------------------------
  129.  STDMETHODIMP
  130. CBindStatusCallback::OnObjectAvailable(REFIID riid, IUnknown* punk) 
  131. {
  132.      return(NOERROR);
  133. }  // CBindStatusCallback::OnObjectAvailable
  134.  
  135. // ---------------------------------------------------------------------------
  136. // %%Function: CBindStatusCallback::OnProgress
  137. // ---------------------------------------------------------------------------
  138. STDMETHODIMP 
  139. CBindStatusCallback::OnProgress
  140. ( 
  141.      ULONG ulProgress,
  142.      ULONG ulProgressMax,
  143.      ULONG ulStatusCode,
  144.      LPCWSTR pwzStatusText
  145. ) 
  146. {
  147.     char    msg[100];
  148.     wsprintf(msg,"Downloaded : %d bytes of %d ", ulProgress, (ulProgress>ulProgressMax)?ulProgress:ulProgressMax);
  149.     m_pMDIframwnd->MyShowPane(msg);
  150.  
  151.      return(NOERROR);
  152. }// CBindStatusCallback::OnProgress
  153.