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Option Explicit Dim hR As Long Private Const HKEY_LOCAL_MACHINE = &H80000002 Private Declare Function RegOpenKey Lib "advapi32.dll" Alias "RegOpenKeyA" (ByVal hKey As Long, ByVal lpSubKey As String, phkResult As Long) As Long Private Declare Function RegQueryValueEx Lib "advapi32.dll" Alias "RegQueryValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal lpReserved As Long, lpType As Long, lpData As Any, lpcbData As Long) As Long ' Note that if you declare the lpData parameter as String, you must pass it By Value. Private Sub Command1_Click() RegOpenKey HKEY_LOCAL_MACHINE, "SOFTWARE/Microsoft/.NETFramework/v2.0.50727/NGENService/ListenedState", hR 'ÕâÀïÊÇÏîÃû Dim r As Long r = RegQueryValueEx(hR, "RootstoreDirty", 0, 0, 0, 0) If r = 2 Then MsgBox "²»´æÔÚ" Else MsgBox "´æÔÚ" End If End Sub