文件列表:

C1\GUIDS.H (375, 1999-11-30)
C1\RESOURCE.H (684, 1999-11-14)
C1\StdAfx.cpp (208, 1999-11-14)
C1\StdAfx.h (1054, 1999-11-14)
C1\TestDlg.cpp (7458, 2000-02-21)
C1\TestDlg.h (1353, 2000-02-21)
C1\Tester.cpp (2110, 2000-02-21)
C1\Tester.dsp (4246, 2000-02-21)
C1\Tester.dsw (1098, 1999-11-30)
C1\Tester.h (1324, 1999-11-14)
C1\Tester.rc (5485, 1999-12-13)
C1\Wizard (0, 2006-04-09)
C1\Server\Resource.h (378, 1999-11-30)
C1\Server\Server.cpp (2713, 1999-11-30)
C1\Server\Server.def (266, 1999-11-30)
C1\Server\Server.dsp (4338, 1999-11-30)
C1\Server\Server.h (1294, 1999-11-30)
C1\Server\Server.odl (1020, 1999-11-30)
C1\Server\Server.rc (3123, 1999-11-30)
C1\Server\StdAfx.cpp (208, 1999-11-30)
C1\Server\StdAfx.h (1447, 1999-11-30)
C1\Server\WzdSrv.cpp (3212, 1999-11-30)
C1\Server\WzdSrv.h (1676, 1999-11-30)
C1\Server\RES\Server.rc2 (398, 1999-11-30)
C1\Server\RES (0, 2006-04-09)
C1\Server (0, 2006-04-09)
C1\RES\Tester.ico (1078, 1999-11-14)
C1\RES\Tester.rc2 (398, 1999-11-14)
C1\RES (0, 2006-04-09)
C1\IServer\IWzd.def (244, 1999-11-30)
C1\IServer\IWzd.dsp (2411, 1999-11-30)
C1\IServer\IWzd.dsw (533, 1999-11-30)
C1\IServer\IWzd.idl (404, 1999-11-30)
C1\IServer\IWzd.mak (574, 1999-11-30)
C1\IServer (0, 2006-04-09)
C1 (0, 2006-04-09)

///////////////////////////////////////////////////////////////////// // How to use the COM object. ///////////////////////////////////////////////////////////////////// 1) The client should call the following to initialize the COM DLL from the main process _and_ from any thread that will be using COM: ::CoInitializeEx( NULL, //always NULL COINIT_APARTMENTTHREADED //see book about threading models ); NOTE: You also need to add _WIN32_DCOM to your project settings under "Preprocessor definitions" in order to get the prototype definition for ::CoInitializeEx() included in your compile. 2) Create a guids.h file that contains the class and interface ID's of the COM classes you want to create. You can find these in the *_i.c file generated by the MIDL compiler: #if !defined guids_h #define guids_h const IID CLSID_IWzdSrv = { 0x4487d432, 0xa6ff, 0x11d3, 0xa3, 0x***, 0x0, 0xc0, 0x4f, 0x57, 0xe, 0x2c }; const IID IID_IWzd = {0xC177116E,0x9AAA,0x11D3,{0x80,0x5D,0x00,0x00,0x00,0x00,0x00,0x00}}; #endif 3) Include this guids.h file as well as the COM class's .h file (also generated by MIDL) and an MFC .h file: #include "IServer\IWzd.h" #include "guids.h" #include 4) To create a COM object one at a time, use: IWzd *iWzd=NULL; HRESULT hr=::CoCreateInstance( CLSID_IWzdSrv, // name of dll to load NULL, // aggregated COM object (none) CLSCTX_INPROC_SERVER,// use dll IID_IWzd, // class to create and object of (LPVOID*) &iWzd); // returned object pointer if (FAILED(hr)) { _com_error err(hr); AfxMessageBox(err.ErrorMessage()); return; } iWzd->Release(); 5) To call what CoCreateInstance() calls directly for diagnostic reasons, use: // load DLL/EXE and get a pointer to its class factory IClassFactory *pCF=NULL; hr=::CoGetClassObject( CLSID_IWzdSrv, // name of dll to load CLSCTX_INPROC_SERVER,// use dll NULL, // for DCOM, a COSERVERINFO structure that id's the remote server // more typically set using OLEView IID_IClassFactory, // the class factory interface (all COM DLL/EXE's must have this interface) (LPVOID*)&pCF); if (FAILED(hr)) { _com_error err(hr); AfxMessageBox(err.ErrorMessage()); return; } // ask class factory to creat the class hr = pCF->CreateInstance( NULL, // aggregated COM object (none) IID_IWzd, // class to create and object of (LPVOID*) &iWzd); // returned object pointer if (FAILED(hr)) { _com_error err(hr); AfxMessageBox(err.ErrorMessage()); return; } pCF->Release(); iWzd->Release(); 6) To create multiple COM objects at once use: // setup MULTI_QI structure with all the classes to create MULTI_QI results[3]; memset(results,0,sizeof(results)); results[0].pIID=&IID_IWzd; // class to create results[1].pIID=&IID_IWzd; results[2].pIID=&IID_IWzd; // make the call hr =::CoCreateInstanceEx( CLSID_IWzdSrv, // name of dll to load NULL, // aggregated COM object (none) CLSCTX_INPROC_SERVER,// use dll NULL, // for DCOM, a COSERVERINFO structure that id's the remote server // more typically set using OLEView 3, // number of MULTI_QI structures in results (MULTI_QI*)&results); // array of MULTI_QI structures if (FAILED(hr)) { _com_error err(hr); AfxMessageBox(err.ErrorMessage()); return; } for (int i=0;i<3;i++) { if (FAILED(results[i].hr)) { _com_error err(hr); AfxMessageBox(err.ErrorMessage()); } } IWzd *iWzd1=(IWzd*)results[0].pItf; IWzd *iWzd2=(IWzd*)results[1].pItf; IWzd *iWzd3=(IWzd*)results[2].pItf; iWzd1->Release(); iWzd2->Release(); iWzd3->Release(); ///////////////////////////////////////////////////////////////////// // From: COM Programming by Example by John E. Swanke // Copyright (C) 2000 jeswanke. All rights reserved. /////////////////////////////////////////////////////////////////////

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