/*
* Greenshot - a free and open source screenshot tool
* Copyright (C) 2007-2015 Thomas Braun, Jens Klingen, Robin Krom
*
* For more information see: http://getgreenshot.org/
* The Greenshot project is hosted on Sourceforge: http://sourceforge.net/projects/greenshot/
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 1 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see .
*/
using System;
namespace Greenshot.Interop
{
///
/// An attribute to specifiy the ProgID of the COM class to create. (As suggested by Kristen Wegner)
///
[AttributeUsage(AttributeTargets.Interface, Inherited = false, AllowMultiple = false)]
public sealed class ComProgIdAttribute : Attribute
{
private readonly string _value;
///
/// Extracts the attribute from the specified type.
///
///
/// The interface type.
///
///
/// The .
///
///
/// is .
///
public static ComProgIdAttribute GetAttribute(Type interfaceType)
{
if (null == interfaceType)
{
throw new ArgumentNullException("interfaceType");
}
Type attributeType = typeof(ComProgIdAttribute);
object[] attributes = interfaceType.GetCustomAttributes(attributeType, false);
if (null == attributes || 0 == attributes.Length)
{
Type[] interfaces = interfaceType.GetInterfaces();
for (int i = 0; i < interfaces.Length; i++)
{
interfaceType = interfaces[i];
attributes = interfaceType.GetCustomAttributes(attributeType, false);
if (null != attributes && 0 != attributes.Length)
{
break;
}
}
}
if (null == attributes || 0 == attributes.Length)
{
return null;
}
return (ComProgIdAttribute)attributes[0];
}
/// Constructor
/// The COM ProgID.
public ComProgIdAttribute(string value)
{
_value = value;
}
///
/// Returns the COM ProgID
///
public string Value
{
get { return _value; }
}
}
}