CODEWITHSUNDEEP
windowsc#installationwmi
Sagar C A
Sagar C A

Reputation: 1

usb not getting disabled with setupapi calls

I am using Setup Api calls to disable USB when they are plugged in, but the calls are giving inconsistent results or not blocking the USB's.

The Api's that I am using are as follows:

  1. cfgmgr.CM_Locate_DevNode
  2. cfgmgr.CM_Get_DevNode_Status

The above two API's give the status of the USB device plugged in that is enabled or disabled. if enabled we go ahead to disable the device using the below API's

  1. SetupDiSetClassInstallParams
  2. SetupDiChangeState

we set all the change params required and pass to the above API's but they are failing to disable the USB.

code as below:

                setupapi.SP_PROPCHANGE_PARAMS ChangeParams = new setupapi.SP_PROPCHANGE_PARAMS();

                ChangeParams.ClassInstallHeader.cbSize = Marshal.SizeOf(typeof(setupapi.SP_CLASSINSTALL_HEADER));
                ChangeParams.ClassInstallHeader.InstallFunction = setupapi.DIF_PROPERTYCHANGE;
                ChangeParams.Scope = setupapi.DICS_FLAG_CONFIGSPECIFIC; //DICS_FLAG_GLOBAL;
                ChangeParams.StateChange = bEnable ? setupapi.DICS_ENABLE : setupapi.DICS_DISABLE;
                ChangeParams.HwProfile = 0;

                int PropChangeSize = Marshal.SizeOf(typeof(setupapi.SP_PROPCHANGE_PARAMS));
                PSP_PROPCHANGE_PARAMS = Marshal.AllocHGlobal(PropChangeSize);
                Marshal.StructureToPtr(ChangeParams, PSP_PROPCHANGE_PARAMS, true);

                bool bRes = setupapi.SetupDiSetClassInstallParams(set, ref data, PSP_PROPCHANGE_PARAMS, PropChangeSize);

                bRes = setupapi.SetupDiChangeState(set, ref data);

Any help to make disable the USB would be helpful.

Upvotes: 0

Views: 30

Answers (0)

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