windows-nt/Source/XPSP1/NT/admin/activec/samples/sdksamples/cmenu/registry.cpp
2020-09-26 16:20:57 +08:00

382 lines
9.8 KiB
C++

//==============================================================;
//
// This source code is only intended as a supplement to existing Microsoft documentation.
//
//
//
//
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
// PURPOSE.
//
// Copyright (C) 1999 Microsoft Corporation. All Rights Reserved.
//
//
//
//==============================================================;
#include <objbase.h>
#include <assert.h>
#include "Registry.h"
#define STRINGS_ONLY
#include "globals.h"
////////////////////////////////////////////////////////
//
// Internal helper functions prototypes
//
// Set the given key and its value.
BOOL setKeyAndValue(const _TCHAR* pszPath,
const _TCHAR* szSubkey,
const _TCHAR* szValue) ;
// Set the given key and its value in the MMC Snapin location
BOOL setSnapInKeyAndValue(const _TCHAR* szKey,
const _TCHAR* szSubkey,
const _TCHAR* szName,
const _TCHAR* szValue);
// Set the given valuename under the key to value
BOOL setValue(const _TCHAR* szKey,
const _TCHAR* szValueName,
const _TCHAR* szValue);
// Delete szKeyChild and all of its descendents.
LONG recursiveDeleteKey(HKEY hKeyParent, const _TCHAR* szKeyChild) ;
////////////////////////////////////////////////////////
//
// Constants
//
// Size of a CLSID as a string
//const int CLSID_STRING_SIZE = 39 ;
/////////////////////////////////////////////////////////
//
// Public function implementation
//
//
// Register the component in the registry.
//
HRESULT RegisterServer(HMODULE hModule, // DLL module handle
const CLSID& clsid, // Class ID
const _TCHAR* szFriendlyName) // IDs
{
// Get server location.
_TCHAR szModule[512] ;
DWORD dwResult =
::GetModuleFileName(hModule,
szModule,
sizeof(szModule)/sizeof(_TCHAR)) ;
assert(dwResult != 0) ;
// Get CLSID
LPOLESTR wszCLSID = NULL ;
HRESULT hr = StringFromCLSID(clsid, &wszCLSID) ;
assert(SUCCEEDED(hr)) ;
MAKE_TSTRPTR_FROMWIDE(pszCLSID, wszCLSID);
// Build the key CLSID\\{...}
_TCHAR szKey[64] ;
_tcscpy(szKey, _T("CLSID\\")) ;
_tcscat(szKey, pszCLSID) ;
// Add the CLSID to the registry.
setKeyAndValue(szKey, NULL, szFriendlyName) ;
// Add the server filename subkey under the CLSID key.
setKeyAndValue(szKey, _T("InprocServer32"), szModule) ;
// set the threading model
_tcscat(szKey, _T("\\InprocServer32"));
setValue(szKey, _T("ThreadingModel"), _T("Apartment"));
// Free memory.
CoTaskMemFree(wszCLSID) ;
return S_OK ;
}
//
// Remove the component from the registry.
//
LONG UnregisterServer(const CLSID& clsid) // IDs
{
// Get CLSID
LPOLESTR wszCLSID = NULL ;
HRESULT hr = StringFromCLSID(clsid, &wszCLSID) ;
// Build the key CLSID\\{...}
_TCHAR szKey[64] ;
_tcscpy(szKey, _T("CLSID\\")) ;
MAKE_TSTRPTR_FROMWIDE(pszT, wszCLSID);
_tcscat(szKey, pszT) ;
// Delete the CLSID Key - CLSID\{...}
LONG lResult = recursiveDeleteKey(HKEY_CLASSES_ROOT, szKey) ;
assert((lResult == ERROR_SUCCESS) ||
(lResult == ERROR_FILE_NOT_FOUND)) ; // Subkey may not exist.
// Free memory.
CoTaskMemFree(wszCLSID) ;
return S_OK ;
}
//
// Register the snap-in in the registry.
//
HRESULT RegisterSnapin(const CLSID& clsid, // Class ID
const _TCHAR* szNameString, // NameString
const CLSID& clsidAbout, // Class Id for About Class
const BOOL fSupportExtensions)
{
// Get CLSID
LPOLESTR wszCLSID = NULL ;
LPOLESTR wszAboutCLSID = NULL;
HRESULT hr = StringFromCLSID(clsid, &wszCLSID) ;
if (IID_NULL != clsidAbout)
hr = StringFromCLSID(clsidAbout, &wszAboutCLSID);
MAKE_TSTRPTR_FROMWIDE(pszCLSID, wszCLSID);
MAKE_TSTRPTR_FROMWIDE(pszAboutCLSID, wszAboutCLSID);
// Add the CLSID to the registry.
setSnapInKeyAndValue(pszCLSID, NULL, _T("NameString"), szNameString) ;
setSnapInKeyAndValue(pszCLSID, _T("StandAlone"), NULL, NULL);
if (IID_NULL != clsidAbout)
setSnapInKeyAndValue(pszCLSID, NULL, _T("About"), pszAboutCLSID);
if (fSupportExtensions) {
// Build the key NodeType
setSnapInKeyAndValue(pszCLSID, _T("NodeTypes"), NULL, NULL);
_TCHAR szKey[64] ;
_tcscpy(szKey, pszCLSID) ;
_tcscat(szKey, _T("\\NodeTypes")) ;
setSnapInKeyAndValue(szKey, pszCLSID, NULL, NULL);
}
// Free memory.
CoTaskMemFree(wszCLSID) ;
if (IID_NULL != clsidAbout)
CoTaskMemFree(wszAboutCLSID);
return S_OK ;
}
//
// Unregister the snap-in in the registry.
//
HRESULT UnregisterSnapin(const CLSID& clsid) // Class ID
{
_TCHAR szKeyBuf[1024];
LPOLESTR wszCLSID = NULL;
// Get CLSID
HRESULT hr = StringFromCLSID(clsid, &wszCLSID);
MAKE_TSTRPTR_FROMWIDE(pszCLSID, wszCLSID);
// Load the buffer with the Snap-In Location
_tcscpy(szKeyBuf, _T("SOFTWARE\\Microsoft\\MMC\\SnapIns"));
// Copy keyname into buffer.
_tcscat(szKeyBuf, _T("\\"));
_tcscat(szKeyBuf, pszCLSID);
// Delete the CLSID Key - CLSID\{...}
LONG lResult = recursiveDeleteKey(HKEY_LOCAL_MACHINE, szKeyBuf);
assert((lResult == ERROR_SUCCESS) ||
(lResult == ERROR_FILE_NOT_FOUND)) ; // Subkey may not exist.
// free the memory
CoTaskMemFree(wszCLSID);
return S_OK;
}
//
// Delete a key and all of its descendents.
//
LONG recursiveDeleteKey(HKEY hKeyParent, // Parent of key to delete
const _TCHAR* lpszKeyChild) // Key to delete
{
// Open the child.
HKEY hKeyChild ;
LONG lRes = RegOpenKeyEx(hKeyParent, lpszKeyChild, 0,
KEY_ALL_ACCESS, &hKeyChild) ;
if (lRes != ERROR_SUCCESS)
{
return lRes ;
}
// Enumerate all of the decendents of this child.
FILETIME time ;
_TCHAR szBuffer[256] ;
DWORD dwSize = 256 ;
while (RegEnumKeyEx(hKeyChild, 0, szBuffer, &dwSize, NULL,
NULL, NULL, &time) == S_OK)
{
// Delete the decendents of this child.
lRes = recursiveDeleteKey(hKeyChild, szBuffer) ;
if (lRes != ERROR_SUCCESS)
{
// Cleanup before exiting.
RegCloseKey(hKeyChild) ;
return lRes;
}
dwSize = 256 ;
}
// Close the child.
RegCloseKey(hKeyChild) ;
// Delete this child.
return RegDeleteKey(hKeyParent, lpszKeyChild) ;
}
//
// Create a key and set its value.
// - This helper function was borrowed and modifed from
// Kraig Brockschmidt's book Inside OLE.
//
BOOL setKeyAndValue(const _TCHAR* szKey,
const _TCHAR* szSubkey,
const _TCHAR* szValue)
{
HKEY hKey;
_TCHAR szKeyBuf[1024] ;
// Copy keyname into buffer.
_tcscpy(szKeyBuf, szKey) ;
// Add subkey name to buffer.
if (szSubkey != NULL)
{
_tcscat(szKeyBuf, _T("\\")) ;
_tcscat(szKeyBuf, szSubkey ) ;
}
// Create and open key and subkey.
long lResult = RegCreateKeyEx(HKEY_CLASSES_ROOT ,
szKeyBuf,
0, NULL, REG_OPTION_NON_VOLATILE,
KEY_ALL_ACCESS, NULL,
&hKey, NULL) ;
if (lResult != ERROR_SUCCESS)
{
return FALSE ;
}
// Set the Value.
if (szValue != NULL)
{
RegSetValueEx(hKey, NULL, 0, REG_SZ,
(BYTE *)szValue,
(_tcslen(szValue)+1)*sizeof(_TCHAR)) ;
}
RegCloseKey(hKey) ;
return TRUE ;
}
//
// Open a key value and set it
//
BOOL setValue(const _TCHAR* szKey,
const _TCHAR* szValueName,
const _TCHAR* szValue)
{
HKEY hKey;
_TCHAR szKeyBuf[1024] ;
// Copy keyname into buffer.
_tcscpy(szKeyBuf, szKey) ;
// Create and open key and subkey.
long lResult = RegCreateKeyEx(HKEY_CLASSES_ROOT ,
szKeyBuf,
0, NULL, REG_OPTION_NON_VOLATILE,
KEY_ALL_ACCESS, NULL,
&hKey, NULL) ;
if (lResult != ERROR_SUCCESS)
{
return FALSE ;
}
// Set the Value.
if (szValue != NULL)
{
RegSetValueEx(hKey, szValueName, 0, REG_SZ,
(BYTE *)szValue,
(_tcslen(szValue)+1)*sizeof(_TCHAR)) ;
}
RegCloseKey(hKey) ;
return TRUE ;
}
//
// Create a key and set its value.
// - This helper function was borrowed and modifed from
// Kraig Brockschmidt's book Inside OLE.
//
BOOL setSnapInKeyAndValue(const _TCHAR* szKey,
const _TCHAR* szSubkey,
const _TCHAR* szName,
const _TCHAR* szValue)
{
HKEY hKey;
_TCHAR szKeyBuf[1024] ;
// Load the buffer with the Snap-In Location
_tcscpy(szKeyBuf, _T("SOFTWARE\\Microsoft\\MMC\\SnapIns"));
// Copy keyname into buffer.
_tcscat(szKeyBuf, _T("\\")) ;
_tcscat(szKeyBuf, szKey) ;
// Add subkey name to buffer.
if (szSubkey != NULL)
{
_tcscat(szKeyBuf, _T("\\")) ;
_tcscat(szKeyBuf, szSubkey ) ;
}
// Create and open key and subkey.
long lResult = RegCreateKeyEx(HKEY_LOCAL_MACHINE ,
szKeyBuf,
0, NULL, REG_OPTION_NON_VOLATILE,
KEY_ALL_ACCESS, NULL,
&hKey, NULL) ;
if (lResult != ERROR_SUCCESS)
{
return FALSE ;
}
// Set the Value.
if (szValue != NULL)
{
RegSetValueEx(hKey, szName, 0, REG_SZ,
(BYTE *)szValue,
(_tcslen(szValue)+1)*sizeof(_TCHAR)) ;
}
RegCloseKey(hKey) ;
return TRUE ;
}