private bool ResetIt(IntPtr hDevInfo, Native.SP_DEVINFO_DATA devInfoData) { int szOfPcp; IntPtr ptrToPcp; int szDevInfoData; IntPtr ptrToDevInfoData; Native.SP_PROPCHANGE_PARAMS pcp = new Native.SP_PROPCHANGE_PARAMS(); pcp.ClassInstallHeader.cbSize = Marshal.SizeOf(typeof(Native.SP_CLASSINSTALL_HEADER)); pcp.ClassInstallHeader.InstallFunction = Native.DIF_PROPERTYCHANGE; pcp.StateChange = Native.DICS_PROPCHANGE; // for reset pcp.Scope = Native.DICS_FLAG_CONFIGSPECIFIC; pcp.HwProfile = 0; szOfPcp = Marshal.SizeOf(pcp); ptrToPcp = Marshal.AllocHGlobal(szOfPcp); Marshal.StructureToPtr(pcp, ptrToPcp, true); szDevInfoData = Marshal.SizeOf(devInfoData); ptrToDevInfoData = Marshal.AllocHGlobal(szDevInfoData); Marshal.StructureToPtr(devInfoData, ptrToDevInfoData, true); bool rslt1 = Native.SetupDiSetClassInstallParams(hDevInfo, ptrToDevInfoData, ptrToPcp, Marshal.SizeOf(typeof(Native.SP_PROPCHANGE_PARAMS))); bool rstl2 = Native.SetupDiCallClassInstaller(Native.DIF_PROPERTYCHANGE, hDevInfo, ptrToDevInfoData); if (rslt1 && rstl2) { return(true); } return(false); }
/// <summary> /// Inputs: pointer to hdev, SP_DEV_INFO, bool /// Errors: This method may throw the following exceptions. Unable to change device state! /// Remarks: Attempts to enable or disable a device driver. does not check the reboot flag /// Some devices require you reboot the OS for the change to take affect. /// If this describes your device, you will need to look at the SDK call: /// SetupDiGetDeviceInstallParams. You can call it directly after /// ChangeIt to see whether or not you need to reboot the OS for you change to go into effect. /// </summary> /// <param name="hDevInfo"></param> /// <param name="devInfoData"></param> /// <param name="bEnable"></param> /// <returns>bool</returns> private bool ChangeIt(IntPtr hDevInfo, Native.SP_DEVINFO_DATA devInfoData, bool bEnable) { try { //Marshalling vars int szOfPcp; IntPtr ptrToPcp; int szDevInfoData; IntPtr ptrToDevInfoData; Native.SP_PROPCHANGE_PARAMS pcp = new Native.SP_PROPCHANGE_PARAMS(); if (bEnable) { pcp.ClassInstallHeader.cbSize = Marshal.SizeOf(typeof(Native.SP_CLASSINSTALL_HEADER)); pcp.ClassInstallHeader.InstallFunction = Native.DIF_PROPERTYCHANGE; pcp.StateChange = Native.DICS_ENABLE; pcp.Scope = Native.DICS_FLAG_GLOBAL; pcp.HwProfile = 0; //Marshal the params szOfPcp = Marshal.SizeOf(pcp); ptrToPcp = Marshal.AllocHGlobal(szOfPcp); Marshal.StructureToPtr(pcp, ptrToPcp, true); szDevInfoData = Marshal.SizeOf(devInfoData); ptrToDevInfoData = Marshal.AllocHGlobal(szDevInfoData); //Marshal.StructureToPtr(devInfoData, ptrToDevInfoData, true);//fix ? if (Native.SetupDiSetClassInstallParams(hDevInfo, ptrToDevInfoData, ptrToPcp, Marshal.SizeOf(typeof(Native.SP_PROPCHANGE_PARAMS)))) { Native.SetupDiCallClassInstaller(Native.DIF_PROPERTYCHANGE, hDevInfo, ptrToDevInfoData); } pcp.ClassInstallHeader.cbSize = Marshal.SizeOf(typeof(Native.SP_CLASSINSTALL_HEADER)); pcp.ClassInstallHeader.InstallFunction = Native.DIF_PROPERTYCHANGE; pcp.StateChange = Native.DICS_ENABLE; pcp.Scope = Native.DICS_FLAG_CONFIGSPECIFIC; pcp.HwProfile = 0; } else { pcp.ClassInstallHeader.cbSize = Marshal.SizeOf(typeof(Native.SP_CLASSINSTALL_HEADER)); pcp.ClassInstallHeader.InstallFunction = Native.DIF_PROPERTYCHANGE; pcp.StateChange = Native.DICS_DISABLE; pcp.Scope = Native.DICS_FLAG_CONFIGSPECIFIC; pcp.HwProfile = 0; } //Marshal the params szOfPcp = Marshal.SizeOf(pcp); ptrToPcp = Marshal.AllocHGlobal(szOfPcp); Marshal.StructureToPtr(pcp, ptrToPcp, true); szDevInfoData = Marshal.SizeOf(devInfoData); ptrToDevInfoData = Marshal.AllocHGlobal(szDevInfoData); Marshal.StructureToPtr(devInfoData, ptrToDevInfoData, true); bool rslt1 = Native.SetupDiSetClassInstallParams(hDevInfo, ptrToDevInfoData, ptrToPcp, Marshal.SizeOf(typeof(Native.SP_PROPCHANGE_PARAMS))); bool rstl2 = Native.SetupDiCallClassInstaller(Native.DIF_PROPERTYCHANGE, hDevInfo, ptrToDevInfoData); if ((!rslt1) || (!rstl2)) { Exceptions.Write(new Exception("Unable to change device state!")); return(false); } else { return(true); } } catch (Exception ex) { Exceptions.Write(ex); return(false); } }