Category

Development Platform
Home > SourceCode/Document > Windows Develop > ActiveX-DCOM-ATL > View Code
MyLog.cpp
Package: code_and_note_of_COM.rar　[view]
Upload User: weisheen
Upload Date: 2022-07-09
Package Size: 19390k
Code Size: 1k
Category:

ActiveX-DCOM-ATL

Development Platform:

Visual C++

MyLog.cpp：Code Content
  1. // MyLog.cpp: implementation of the MyLog class.
  2. //
  3. //////////////////////////////////////////////////////////////////////
  5. #include "stdafx.h"
  6. #include "test.h"
  7. #include "MyLog.h"
  9. #ifdef _DEBUG
  10. #undef THIS_FILE
  11. static char THIS_FILE[]=__FILE__;
  12. #define new DEBUG_NEW
  13. #endif
  14. #include "../DemoIUnknown_i.c"
  15. //////////////////////////////////////////////////////////////////////
  16. // Construction/Destruction
  17. //////////////////////////////////////////////////////////////////////
  19. MyLog::MyLog()
  20. {
  21. ilisongtao=0;
  22. }
  24. MyLog::~MyLog()
  25. {
  27. }
  29. STDMETHODIMP MyLog::writeLog( BSTR message)
  30. {
  31. CFile f;
  32. CFileException ex;
  33. f.Open("./log.txt",CFile::modeCreate| CFile::modeReadWrite,&ex);
  34. CString str(message);
  35. f.Write(str.GetBuffer(100),str.GetLength());
  36. ::SysFreeString(message);
  37. f.Close();
  38.     return S_OK;
  39. }
  40. STDMETHODIMP MyLog::QueryInterface(REFIID riid, void __RPC_FAR *__RPC_FAR *ppvObject)
  41. {
  42. if(riid==IID_ILog)
  43. {
  44. *ppvObject=(ILog*)this;
  45. this->AddRef();
  46. return S_OK;
  47. }
  48. else if(riid==IID_IUnknown)
  49. {
  50. *ppvObject=(IUnknown*)this;
  51. this->AddRef();
  52. return S_OK;
  53. }
  54. else
  55. {
  56. *ppvObject=NULL;
  57. return S_FALSE;
  58. }
  59. }
  61. STDMETHODIMP_(ULONG) MyLog::AddRef()
  62. {
  63. return this->ilisongtao++;
  64. }    
  65. STDMETHODIMP_(ULONG) MyLog::Release()
  66. {
  67. this->ilisongtao--;
  68. if(this->ilisongtao==0)
  69. {
  70. delete this;
  71. }
  72. return this->ilisongtao;
  73. }