/// <summary>
/// Attempts to enable or disable a device driver.
/// </summary>
/// <param name="deviceInfoSet">Pointer to device.</param>
/// <param name="deviceInfoData"></param>
/// <param name="bEnable"></param>
/// <returns>State of success.</returns>
/// <remarks>
/// IMPORTANT NOTE!!!
/// This code currently 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.
/// Errors: This method may throw the following exceptions.
/// Unable to change device state!
/// </remarks>
private static bool SetDeviceState(IntPtr deviceInfoSet, SP_DEVINFO_DATA deviceInfoData, bool bEnable)
{
try
{
SP_CLASSINSTALL_HEADER header = new SP_CLASSINSTALL_HEADER();
header.cbSize = (UInt32)Marshal.SizeOf(header);
header.InstallFunction = DIF_PROPERTYCHANGE;
SP_PROPCHANGE_PARAMS classInstallParams = new SP_PROPCHANGE_PARAMS();
classInstallParams.ClassInstallHeader = header;
classInstallParams.StateChange = bEnable ? DICS_ENABLE : DICS_DISABLE;
classInstallParams.Scope = DICS_FLAG_GLOBAL;
classInstallParams.HwProfile = 0;
var classInstallParamsSize = (UInt32)Marshal.SizeOf(classInstallParams);
bool result = SetupDiSetClassInstallParams(deviceInfoSet, ref deviceInfoData, classInstallParams, classInstallParamsSize);
if (result) result = SetupDiChangeState(deviceInfoSet, ref deviceInfoData);
if (!result)
{
var ex = new Win32Exception();
SetupDiCallClassInstaller(DIF_PROPERTYCHANGE, deviceInfoSet, ref deviceInfoData);
}
return result;
}
catch (Exception)
{
return false;
}
}
static extern bool SetupDiSetClassInstallParams(IntPtr DeviceInfoSet, ref SP_DEVINFO_DATA DeviceInfoData, SP_PROPCHANGE_PARAMS ClassInstallParams, UInt32 ClassInstallParamsSize);
public static extern bool SetupDiSetClassInstallParams(IntPtr deviceInfoSet, ref SP_DEVINFO_DATA deviceInfoData, SP_PROPCHANGE_PARAMS classInstallParams, UInt32 classInstallParamsSize);
