一种将快捷方式从开始菜单“常用应用”的中去除的方法

// RegExplorerUserAssist.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"

#include <windows.h>
#include <string>

/*
Registry value names are limited to 32,767 bytes. 
The ANSI version of this function treats this parameter as a SHORT value. 
Therefore, if you specify a value greater than 32,767 bytes, there is an overflow and the function may return ERROR_MORE_DATA.
*/
#define MAX_VALUE_NAME 16383

// http://baike.baidu.com/link?url=a3UL0bMbmzzINfomfkCgTHyUOQDwBk83WkEjcgH6gZdvproZg7OTcXkt6G3oLLFpZnBXwXWhFWeGhqXBN8Tuhq

std::wstring ConvertData( LPCWSTR lpBuffer, DWORD dwLength ) {
	std::wstring wstrValueName;
	for ( DWORD dwIndex = 0; dwIndex < dwLength; dwIndex++ ) {
		WCHAR wchSingle = *( lpBuffer + dwIndex );

		unsigned char ucsa = LOBYTE(WCHAR('a'));
		unsigned char ucsz = LOBYTE(WCHAR('z'));
		unsigned char ucbA = LOBYTE(WCHAR('A'));
		unsigned char ucbZ = LOBYTE(WCHAR('Z'));

		if ( ( WCHAR('a') <= wchSingle && WCHAR('z') >= wchSingle ) || ( WCHAR('A') <= wchSingle && WCHAR('Z') >= wchSingle )  ) {
			unsigned char uc = LOBYTE(wchSingle);
			if ( ucsa <= uc && ucsz >= uc ) {
				uc = ( ( uc + 13 ) > ucsz  ) ? uc - 13 : uc + 13;
			}
			else if ( ucbA <= uc && ucbZ >= uc ) {
				uc = ( ( uc + 13 ) > ucbZ  ) ? uc - 13 : uc + 13;
			}

			wchSingle = WCHAR(MAKELONG(uc,0));
		}
		wstrValueName.append( &wchSingle, 1 );
	}

#ifdef DEBUG
	std::wstring wstrOutput = wstrValueName;
	wstrOutput.append( WCHAR('\n'), 1);
	OutputDebugStringW(wstrOutput.c_str());
#endif
	
	return wstrValueName;
}

BOOL DeleteValue(HKEY hKey, const std::wstring& wstrSubString) 
{ 
	WCHAR wchValueName[MAX_VALUE_NAME] = {0};
	LPWSTR lpValueNameBuffer = wchValueName;
	DWORD dwValueNameBufferLength = ARRAYSIZE(wchValueName);

	BOOL bSuc = FALSE;
	do {
		DWORD    dwValuesCount = 0;              // number of values for key 
		DWORD    dwMaxValueNameLen = 0;          // longest value name 
		// Get the class name and the value count. 
		LONG lretCode = RegQueryInfoKey( hKey,
			NULL, NULL, NULL, NULL, NULL, NULL, &dwValuesCount, &dwMaxValueNameLen, NULL, NULL, NULL );
	
		if ( ERROR_SUCCESS != lretCode ) {
			break;
		}
		// Enumerate the key values.

		if ( 0 != dwValuesCount) {
			for ( DWORD dwIndex = 0; dwIndex < dwValuesCount; dwIndex++ )  { 

				DWORD dwValueNameInlineLength = dwValueNameBufferLength;
				wmemset( lpValueNameBuffer, 0, dwValueNameInlineLength);

				lretCode = RegEnumValue(hKey, dwIndex, 
					lpValueNameBuffer, &dwValueNameInlineLength, NULL, NULL, NULL, NULL);

				if ( ERROR_NO_MORE_ITEMS == lretCode ) { 
					// Suc
					bSuc = TRUE;
					break;
				} 

				if ( ERROR_MORE_DATA == lretCode ) {
					if ( wchValueName != lpValueNameBuffer ) {
						if ( NULL != lpValueNameBuffer ) {
							delete [] lpValueNameBuffer;
							lpValueNameBuffer = NULL;
						}
					}
					lpValueNameBuffer = new WCHAR[dwValueNameInlineLength];
					dwValueNameBufferLength = dwValueNameInlineLength;
					dwIndex--;
				}

				if ( ERROR_SUCCESS == lretCode ) {
					std::wstring wstrValueName = ConvertData( lpValueNameBuffer, dwValueNameInlineLength );
					if ( std::wstring::npos == wstrValueName.find( wstrSubString.c_str() ) ) {
						continue;
					}
					else {
						bSuc = RegDeleteValue( hKey, wstrValueName.c_str() );
						break;
					}
				}
			}
		}
	} while (0);

	if ( lpValueNameBuffer != wchValueName ) {
		delete [] lpValueNameBuffer;
		lpValueNameBuffer = NULL;
	}

	return bSuc;
}

int _tmain(int argc, _TCHAR* argv[])
{
	HKEY hTestKey;

	if( RegOpenKeyEx( HKEY_CURRENT_USER,
		TEXT("Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\UserAssist\\{F4E57C4B-2036-45F0-A9AB-443BCFE33D9F}\\Count"),
		0,
		KEY_READ,
		&hTestKey) == ERROR_SUCCESS
		)
	{
		DeleteValue(hTestKey, L"\\360安全中心\\360安全卫士\\360安全卫士.lnk");
	}

	return 0;
}