static private extern bool SetupDiSetClassInstallParams( IntPtr DeviceInfoSet, ref DeviceInfoData rData, ref PropChangeParams ClassInstallParams, UInt32 ClassInstallParamsSize );
static private extern bool SetupDiSetClassInstallParams(IntPtr DeviceInfoSet, ref DeviceInfoData rData, ref PropChangeParams ClassInstallParams, UInt32 ClassInstallParamsSize);
/// <summary>
/// Find the related device and change the operating state.
/// </summary>
/// <param name="stateCode">The code for the state corresponding to
/// the <i>DICS_</i> constants of Windows.</param>
/// <returns></returns>
private void ChangeState( int stateCode )
{
// Open device
var hInfoList = SetupDiGetClassDevs( ref m_Class, IntPtr.Zero, IntPtr.Zero, 2 );
// Validate
if ((int) hInfoList == -1)
throw new DeviceException( "Could not create Device Set" );
// With cleanup
try
{
// Create the device information data block
var pData = new DeviceInfoData();
// Initialize
pData.cbSize = Marshal.SizeOf( pData );
// Find them all
for (uint ix = 0; SetupDiEnumDeviceInfo( hInfoList, ix++, ref pData );)
{
// Load the name
string name;
// Check mode
if (m_FilterIndex == uint.MaxValue)
name = GetInstanceId( hInfoList, ref pData );
else
name = ReadStringProperty( hInfoList, ref pData, (int) m_FilterIndex );
// Skip
if (string.IsNullOrEmpty( name ))
continue;
// Compare
if (!m_Adaptor.Equals( name ))
continue;
// Create update helper
var pParams =
new PropChangeParams
{
ClassInstallHeader = { cbSize = ClassInstallHeader.SizeOf, InstallFunction = 0x12 },
Scope = (uint) ((stateCode < 4) ? 1 : 2),
StateChange = (uint) stateCode,
};
// Prepare
if (!SetupDiSetClassInstallParams( hInfoList, ref pData, ref pParams, PropChangeParams.SizeOf ))
throw new DeviceException( "Could not update Class Install Parameters" );
// Change mode
if (!SetupDiCallClassInstaller( pParams.ClassInstallHeader.InstallFunction, hInfoList, ref pData ))
throw new DeviceException( "Unable to finish Change Request" );
// Did it
return;
}
// Not found
throw new DeviceException( "No Device " + m_Adaptor + " found" );
}
finally
{
// Clean it
SetupDiDestroyDeviceInfoList( hInfoList );
}
}
/// <summary>
/// Find the related device and change the operating state.
/// </summary>
/// <param name="stateCode">The code for the state corresponding to
/// the <i>DICS_</i> constants of Windows.</param>
/// <returns></returns>
private void ChangeState(int stateCode)
{
// Open device
var hInfoList = SetupDiGetClassDevs(ref m_Class, IntPtr.Zero, IntPtr.Zero, 2);
// Validate
if ((int)hInfoList == -1)
{
throw new DeviceException("Could not create Device Set");
}
// With cleanup
try
{
// Create the device information data block
var pData = new DeviceInfoData();
// Initialize
pData.cbSize = Marshal.SizeOf(pData);
// Find them all
for (uint ix = 0; SetupDiEnumDeviceInfo(hInfoList, ix++, ref pData);)
{
// Load the name
string name;
// Check mode
if (m_FilterIndex == uint.MaxValue)
{
name = GetInstanceId(hInfoList, ref pData);
}
else
{
name = ReadStringProperty(hInfoList, ref pData, (int)m_FilterIndex);
}
// Skip
if (string.IsNullOrEmpty(name))
{
continue;
}
// Compare
if (!m_Adaptor.Equals(name))
{
continue;
}
// Create update helper
var pParams =
new PropChangeParams
{
ClassInstallHeader = { cbSize = ClassInstallHeader.SizeOf, InstallFunction = 0x12 },
Scope = (uint)((stateCode < 4) ? 1 : 2),
StateChange = (uint)stateCode,
};
// Prepare
if (!SetupDiSetClassInstallParams(hInfoList, ref pData, ref pParams, PropChangeParams.SizeOf))
{
throw new DeviceException("Could not update Class Install Parameters");
}
// Change mode
if (!SetupDiCallClassInstaller(pParams.ClassInstallHeader.InstallFunction, hInfoList, ref pData))
{
throw new DeviceException("Unable to finish Change Request");
}
// Did it
return;
}
// Not found
throw new DeviceException("No Device " + m_Adaptor + " found");
}
finally
{
// Clean it
SetupDiDestroyDeviceInfoList(hInfoList);
}
}
