使用RegEnumValue清理IE历史记录

#include <windows.h>
#include <tchar.h>		//for '_T': identifier not found

#include <iostream>
using namespace std;

BOOL ClearHistory()
{
	HKEY hKEY;
	HKEY  hKeyRoot = HKEY_CURRENT_USER;	
	DWORD index = 0;
	TCHAR valueName[MAX_PATH];	
	BYTE data[MAX_PATH];	
	
	//KEY_QUERY_VALUE for RegEnumValue
	//KEY_SET_VALUE for RegDeleteValue
	LONG ret = ::RegOpenKeyEx(hKeyRoot,_T("Software\\Microsoft\\Internet Explorer\\TypedURLs"), \
		0,KEY_QUERY_VALUE|KEY_SET_VALUE ,&hKEY );
	
	if( ret != ERROR_SUCCESS )
	{
		cout << "fail in ClearHistory-RegOpenKeyEx" << endl;
		return FALSE;
	}	
	
	while ( true )
	{
		int tmp;

		DWORD len1 = MAX_PATH;
		DWORD len2 = MAX_PATH;	//must reset before RegEnumValue

		tmp = RegEnumValue(hKEY, index, valueName, &len1, 0, 0, data, &len2 );

		if ( tmp == ERROR_NO_MORE_ITEMS )
			break;

		cout << valueName << "\t" << data << endl;
		
		tmp = RegDeleteValue(hKEY, valueName );

		if ( tmp != ERROR_SUCCESS )
		{
			cout << "fail in calling RegDeleteValue" << endl;
			return FALSE;
		}
	}
	return TRUE;	
}

void main()
{
	ClearHistory();
}