private bool RestartDevice(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)));
if (!rslt1)
{
throw new Exception("SetupDiSetClassInstallParams failed " + Native.GetLastError());
}
bool rstl2 = Native.SetupDiCallClassInstaller(Native.DIF_PROPERTYCHANGE, hDevInfo, ptrToDevInfoData);
if (!rstl2)
{
throw new Exception("SetupDiCallClassInstaller failed" + Native.GetLastError());
}
if (rslt1 && rstl2)
{
return(true);
}
return(false);
}
private bool EnableOrDisableDevice(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);
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))
{
throw new Exception("Unable to change device state!");
return(false);
}
else
{
return(true);
}
}
catch (Exception ex)
{
return(false);
}
}
