使用SHChangeNotifyRegister遇到的问题？

[fhw217]

比如监视路径 C:\AAA\，在其子文件夹 C:\AAA\BBB\ 下删除 20 个文件，收到了 SHCNE_UPDATEDIR 类型消息，现在问题是 收到的路径不正确，我想要收到的刷新路径是 C:\AAA\BBB\，但实际收到的是 C:\AAA\，请问如何解决？

void CTestDlg::FileMon()
{
	IShellFolder* lpsfDesktop;
	SHGetDesktopFolder(&lpsfDesktop);

	LPITEMIDLIST pidl;
	lpsfDesktop->ParseDisplayName(NULL, NULL, _T("C:\\AAA"), NULL, &pidl, NULL);
	lpsfDesktop->Release();

	SHChangeNotifyEntry shcne;
	shcne.pidl = pidl;
	shcne.fRecursive = TRUE;

	ULONG id = SHChangeNotifyRegister(m_hWnd,
		SHCNRF_InterruptLevel | SHCNRF_ShellLevel | SHCNRF_RecursiveInterrupt,
		SHCNE_ALLEVENTS, WM_USER_FILEMON,
		1, &shcne);
}

LRESULT CTestDlg::OnFileMonMsg(WPARAM wParam, LPARAM lParam)
{
	PIDLIST_ABSOLUTE* pPa = (PIDLIST_ABSOLUTE*)wParam;
	static wchar_t Buffer[2048];

	switch (lParam)
	{
	case SHCNE_RENAMEITEM:wcscpy(Buffer, L"SHCNE_RENAMEITEM:"); break;
	case SHCNE_CREATE:wcscpy(Buffer, L"SHCNE_CREATE:"); break;
	case SHCNE_DELETE:wcscpy(Buffer, L"SHCNE_DELETE:"); break;
	case SHCNE_MKDIR:wcscpy(Buffer, L"SHCNE_MKDIR:"); break;
	case SHCNE_RMDIR:wcscpy(Buffer, L"SHCNE_RMDIR:"); break;
	case SHCNE_MEDIAINSERTED:wcscpy(Buffer, L"SHCNE_MEDIAINSERTED:"); break;
	case SHCNE_MEDIAREMOVED:wcscpy(Buffer, L"SHCNE_MEDIAREMOVED:"); break;
	case SHCNE_DRIVEREMOVED:wcscpy(Buffer, L"SHCNE_DRIVEREMOVED:"); break;
	case SHCNE_DRIVEADD:wcscpy(Buffer, L"SHCNE_DRIVEADD:"); break;
	case SHCNE_NETSHARE:wcscpy(Buffer, L"SHCNE_NETSHARE:"); break;
	case SHCNE_NETUNSHARE:wcscpy(Buffer, L"SHCNE_NETUNSHARE:"); break;
	case SHCNE_ATTRIBUTES:wcscpy(Buffer, L"SHCNE_ATTRIBUTES:"); break;
	case SHCNE_UPDATEDIR:wcscpy(Buffer, L"SHCNE_UPDATEDIR:"); break;
	case SHCNE_UPDATEITEM:wcscpy(Buffer, L"SHCNE_UPDATEITEM:"); break;
	case SHCNE_SERVERDISCONNECT:wcscpy(Buffer, L"SHCNE_SERVERDISCONNECT:"); break;
	case SHCNE_UPDATEIMAGE:wcscpy(Buffer, L"SHCNE_UPDATEIMAGE:"); break;
	case SHCNE_DRIVEADDGUI:wcscpy(Buffer, L"SHCNE_DRIVEADDGUI:"); break;
	case SHCNE_RENAMEFOLDER:wcscpy(Buffer, L"SHCNE_RENAMEFOLDER:"); break;
	case SHCNE_FREESPACE:wcscpy(Buffer, L"SHCNE_FREESPACE:"); break;
	}

	TCHAR szFile1[MAX_PATH];
	TCHAR szFile2[MAX_PATH];
	CString str;

	if (SHGetPathFromIDListW(*pPa, szFile1))
	{
		if (SHGetPathFromIDListW(pPa[1], szFile2))
		{
			str.Format(_T("%s %s -> %s"), Buffer, szFile1, szFile2);
		}
		else
		{
			str.Format(_T("%s %s"), Buffer, szFile1);
		}

		TRACE(_T("%s\n"), str);
	}

	return 0;
}

 

[Eleven]

试试ReadDirectoryChangesW