private static uint GetFileInfoRequestFlags(Win32.ItemState itemState, Win32.IconSize iconSize, Win32.FileAttribute attributes)
{
var flags = (uint)(Win32.ShellAttribute.Icon | Win32.ShellAttribute.UseFileAttributes);
if (attributes == Win32.FileAttribute.Directory && itemState == Win32.ItemState.Open)
{
flags |= (uint)Win32.ShellAttribute.OpenIcon;
}
flags |= iconSize == Win32.IconSize.Small ? (uint)Win32.ShellAttribute.SmallIcon : (uint)Win32.ShellAttribute.LargeIcon;
return(flags);
}
public static ImageSource GetImageSource(string fileSystemItemPath, Win32.ItemState itemState = Win32.ItemState.Undefined, Win32.IconSize iconSize = Win32.IconSize.Small)
{
using var fileIcon = GetIcon(fileSystemItemPath, itemState, iconSize);
return(IconToImageSource(fileIcon) ?? IconToImageSource(EmptyIcon()));
}
public static Icon GetIcon(string fileSystemItemPath, Win32.ItemState itemState = Win32.ItemState.Undefined, Win32.IconSize iconSize = Win32.IconSize.Small)
{
try
{
var attributes = GetFileInfoRequestAttributes(fileSystemItemPath);
var flags = GetFileInfoRequestFlags(itemState, iconSize, attributes);
var fileInfo = new Win32.ShellFileInfo();
var size = (uint)Marshal.SizeOf(fileInfo);
var result = Win32.SHGetFileInfo(fileSystemItemPath, (uint)attributes, out fileInfo, size, flags);
return(result.IsValidHandle()
? GetIconFromHandle(fileInfo.hIcon)
: EmptyIcon());
}
catch
{
return(EmptyIcon());
}
}
