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今天的The Old New Thing: How can I tell if Windows Update is waiting for the system to reboot?介绍了如何检查机器是否因为装了Windows更新而需要重新启动。下面是稍作修改的CPP和C#的代码。

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#include <atlstr.h>
#include <wuapi.h> 
#include <iostream>

int _tmain(int argc, _TCHAR* argv[])
{
    CoInitialize(NULL);
    {
        CComPtr<ISystemInformation> info;
        info.CoCreateInstance(CLSID_SystemInformation);

        VARIANT_BOOL rebootRequired;
        info->get_RebootRequired(&rebootRequired);

        std::cout << rebootRequired;
    }
    CoUninitialize();
	return 0;
}
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Type t = Type.GetTypeFromProgID("Microsoft.Update.SystemInfo");
object s = Activator.CreateInstance(t);
var needReboot = t.InvokeMember("RebootRequired", BindingFlags.GetProperty, null, s, null);
Console.WriteLine(needReboot);
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