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Use ATL to create process external components
First, establish a process external component 1) Open the menu file | New, select the Projects tab, then select "ATL COM AppWizard" 2) Enter STEP02 in the Project Name bar, click the OK button, select "Server Type column in the next window" After executable (exe), click the Finish button
Then insert the object (Similar to the creation process): 3) Open the menu INSERT | New ATL OBJECT, select Objects in the Category on the left, select Simple Object in the Objects on the right, click "Next" button 4) Tag on the Names In the SHORT NAME column, fill in Simple02, do not modify other properties, click the "OK" button.
Join the interface method: 5) Right-click on the "ISIMPLE02" interface in the ClassView tab of Workspace, select "Add Method" from the pop-up menu, in the pop-up window, fill in the GetOSversion, parameters column Fill in [Out, RetVal] BSTR * BSTRVERSION
Modify the function stdmethodimp csimple02 :: getosversion (BSTR * BSTRVERSION) as follows:
// simple02.cpp: importation of csimple02 # include "stdafx.h" #include "step02.h" #include "simple02.h"
// Add Comutil Support #include
/// csimple02
// get information on the operating system STDMETHODIMP CSimple02 :: GetOSVersion (BSTR * bstrVersion) {char szOSVersion [10]; OSVERSIONINFO VersionInformation; VersionInformation.dwOSVersionInfoSize = sizeof (OSVERSIONINFO); if (GetVersionEx (& VersionInformation)) {switch (VersionInformation.dwPlatformId) { case VER_PLATFORM_WIN32s: strcpy (szOSVersion, "WIN32S"); break; case VER_PLATFORM_WIN32_WINDOWS: strcpy (szOSVersion, "WIN95 / 98"); break; case VER_PLATFORM_WIN32_NT: strcpy (szOSVersion, "WINNT"); break; default: strcpy (szOSVersion, "Unknown"); break;}} else {structure (szosversion, "error");} * bstrversion = _com_util :: convertstringtobstr (szosversion); return s_ok;}
The compiler, so we have established a process external component. We compile the proxy / stub program 6) Enter the "MS DOS" state, find the directory of step02, run NMAKE Step02ps.mk, will create a dynamic connection library named Step02ps.dll . Second, establish a client program 1) Open the menu file | New, select the Projects tab, then select "Win32 Console Application" 2) Enter the client in the Project Name bar, click the OK button, click the finish button in the next window.
Newly built as follows, join the project: // client.cpp file
#include
/ / Contains COM definition file, the following two files are copied from STEP02 #include "../step02/step02.h"#include" ../step02/step02_i.c "
Void main () {isimple02 * pisimple02 = null; // We define interface BSTR BSTROS;
// Initialization HRESULT HR = Coinitialize (NULL); failed (HR)) {Printf ("Coinitialize Failed! HR = 0x% x", HR); Return;}
// Create a COM object hr = COCREATE0E02 (CLSID_SIMPLE02, NULL, CLSCTX_ALL, IID_ID_IMPLE02, (Void **) & pisimple02); if (FAILED (HR)) {Printf ("Create COM FAILED! HR = 0x% x", HR); Couninitialize (); return;} // get operating system hr = pisimple02-> getOSversion (& BSTROS); if (Failed (HR)) {printf ("pisimple02-> getosversion () failed! Hr = 0x% x", HR) Pisimple02-> Release (); couninitialize (); return;} char * pszos; pszos = _com_util :: convertBSTRTOSTRING (BSTROS); Printf ("The OS IS% S / N", PSZOS;
// Release allocated memory sysfreestring (bstros); delete pszos; pisimple02-> release (); counitialize ();
Return;}
Third, Description 1) Registration of processes outside the process: Step02.exe / regserver Logout: Step02.exe / UnregServer
Run our Client.exe under Windows 98, you can get the OS IS WIN95 / 98 running our client.exe in Windows 2000, you can get the OS Winnt
