86 lines
2.8 KiB
C#
86 lines
2.8 KiB
C#
// Copyright (c) 2010-2014 SharpDX - Alexandre Mutel
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to deal
|
|
// in the Software without restriction, including without limitation the rights
|
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
// copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in
|
|
// all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
// THE SOFTWARE.
|
|
using System;
|
|
using System.Collections;
|
|
using System.Collections.Generic;
|
|
using System.Runtime.InteropServices;
|
|
using System.Runtime.InteropServices.ComTypes;
|
|
|
|
namespace SharpDX.Win32
|
|
{
|
|
/// <summary>
|
|
/// An enumerator using internally a <see cref="IEnumString"/>.
|
|
/// </summary>
|
|
internal class ComStringEnumerator : IEnumerator<string>, IEnumerable<string>
|
|
{
|
|
private readonly IEnumString enumString;
|
|
private string current;
|
|
|
|
/// <summary>
|
|
/// Initializes a new instance of the <see cref="ComStringEnumerator"/> class.
|
|
/// </summary>
|
|
/// <param name="ptrToIEnumString">The PTR to I enum string.</param>
|
|
public ComStringEnumerator(IntPtr ptrToIEnumString)
|
|
{
|
|
enumString = (IEnumString)Marshal.GetObjectForIUnknown(ptrToIEnumString);
|
|
}
|
|
|
|
public void Dispose()
|
|
{
|
|
}
|
|
|
|
public bool MoveNext()
|
|
{
|
|
unsafe
|
|
{
|
|
var output = new string[1];
|
|
int count = 0;
|
|
var hasNext = enumString.Next(1, output, new IntPtr(&count)) == Result.Ok.Code;
|
|
current = hasNext ? output[0] : null;
|
|
return hasNext;
|
|
}
|
|
}
|
|
|
|
public void Reset()
|
|
{
|
|
enumString.Reset();
|
|
}
|
|
|
|
public string Current
|
|
{
|
|
get { return current; }
|
|
}
|
|
|
|
object IEnumerator.Current
|
|
{
|
|
get { return Current; }
|
|
}
|
|
|
|
public IEnumerator<string> GetEnumerator()
|
|
{
|
|
return this;
|
|
}
|
|
|
|
IEnumerator IEnumerable.GetEnumerator()
|
|
{
|
|
return GetEnumerator();
|
|
}
|
|
}
|
|
} |