如何在XAML中的容器(如dll)中获取特定图标？

Question

我可以在XAML中设置图标容器:

<Image Source="Shell32.dll.ico" />

但是如何在XAML中设置容器中的图标索引？就像是:

<Image Source="Shell32.dll,5" />

或者像:

<Image Source="Shell32.dll" Index="5" />

等等...

Answer 1

它是这样的：首先IValueConverter：

using System;
using System.Diagnostics;
using System.Globalization;
using System.Runtime.InteropServices;
using System.Windows;
using System.Windows.Data;
using System.Windows.Interop;
using System.Windows.Media;
using System.Windows.Media.Imaging;

[ValueConversion(typeof(string), typeof(ImageSource))]
public class HabeasIcon : IValueConverter
{   
    [DllImport("shell32.dll")]
    private static extern IntPtr ExtractIcon(IntPtr hInst, string lpszExeFileName, int nIconIndex);

    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        string[] fileName = ((string)parameter).Split('|');

        if (targetType != typeof(ImageSource))
            return Binding.DoNothing;

        IntPtr hIcon = ExtractIcon(Process.GetCurrentProcess().Handle, fileName[0], int.Parse(fileName[1]));

        ImageSource ret = Imaging.CreateBitmapSourceFromHIcon(hIcon, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions());
        return ret;
    }
    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    { throw new NotImplementedException(); }
}

XAML：

<Image Source="{Binding Converter={StaticResource iconExtractor}, ConverterParameter=c:\\Windows\\System32\\shell32.dll|72}"/>