//
//The hotfix that is checked here depends on the system. WinXP:912817, Win2k3:912818
//
public static void CheckQfe()
{
bool qfeInstalled = false;
int hr = SafeNativeMethods.CoInitializeEx(IntPtr.Zero, SafeNativeMethods.COINIT_APARTMENTTHREADED);
if (hr >= 0)
{
try
{
SafeIUnknown pClassFactory = null;
hr = SafeNativeMethods.CoGetClassObject(new Guid(CLSID_CGatewayProtocol),
SafeNativeMethods.CLSCTX.CLSCTX_INPROC_SERVER,
IntPtr.Zero,
new Guid(IID_IClassFactory),
out pClassFactory);
if (hr >= 0 && pClassFactory != null)
{
qfeInstalled = true;
}
else
{
qfeInstalled = RegistryEntryExists();
}
}
finally
{
SafeNativeMethods.CoUninitialize();
}
}
if (!qfeInstalled)
{
throw new WsatAdminException(WsatAdminErrorCode.CANNOT_ENABLE_NETWORK_SUPPORT_WHEN_QFE_IS_NOT_INSTALLED, SR.GetString(SR.ErrorNoQFE));
}
}
internal static extern int CoGetClassObject(
[In, MarshalAs(UnmanagedType.LPStruct)] Guid rclsid,
[In] CLSCTX dwClsContext,
[In] IntPtr pServerInfo,
[In, MarshalAs(UnmanagedType.LPStruct)] Guid riid,
[Out] out SafeIUnknown ppv);