Question

我想启用和禁用一个特定的 USB 磁盘, 我找到了这个方法 :

 public static bool StateChange(bool Enable, int SelectedItem, IntPtr DevInfo)
        {
            bool result = false;
            SP_DEVINFO_DATA devInfoData = new SP_DEVINFO_DATA(); ;
            devInfoData.cbSize = Marshal.SizeOf(typeof(SP_DEVINFO_DATA));
            if (true == SetupDiEnumDeviceInfo(DevInfo, SelectedItem, devInfoData))
            {
                SP_PROPCHANGE_PARAMS pcp = new SP_PROPCHANGE_PARAMS(); ;
                pcp.ClassInstallHeader.cbSize = Marshal.SizeOf(typeof(SP_CLASSINSTALL_HEADER));
                pcp.ClassInstallHeader.InstallFunction = DIF_PROPERTYCHANGE;
                pcp.Scope = DICS_FLAG_GLOBAL;

                pcp.StateChange = (Enable ? DICS_ENABLE : DICS_DISABLE);
                if (true == SetupDiSetClassInstallParams(DevInfo, devInfoData, pcp, Marshal.SizeOf(pcp)))
                {
                    if (true == SetupDiCallClassInstaller(DIF_PROPERTYCHANGE, DevInfo, devInfoData))
                    {
                        result = true;
                    }
                }
            }
            return result;
        }

But it fails when calling : SetupDiCallClassInstaller(DIF_PROPERTYCHANGE, DevInfo, devInfoData) (returns false)

是因为我在运行窗口7x64?

Answer 1

根据MSDN 。"对于某些DIF的要求,调用者必须是行政官小组的成员。"

友情链接