/// <summary>
/// Gets the value from the specified <see cref="PropertyKey"/>
/// </summary>
/// <param name="key">The property being requested</param>
/// <returns>The value of the specified property</returns>
public PropVariant GetProperty(PropertyKey key)
{
IntPtr ppv;
_pItem.GetProperty(key.MarshalledPointer, out ppv);
PropVariant v = new PropVariant(ppv);
Marshal.FreeCoTaskMem(ppv);
return(v);
}
private static string GetPrinterFriendlyNameIfPrinter(IShellItem2 shellItem)
{
// Devices_PrimaryCategory returns "Printers" for printers and faxes on Windows 10 but "Printers and faxes" on Windows 7.
using (var categoryIds = new PropVariantSafeHandle())
{
shellItem.GetProperty(PKEY.Devices_CategoryIds, categoryIds).ThrowIfError();
if (!categoryIds.ToStringVector().Any(id => id.StartsWith("PrintFax", StringComparison.OrdinalIgnoreCase)))
{
return(null);
}
}
// The canonical or "friendly name" needed to match the devmode
// https://blogs.msdn.microsoft.com/asklar/2009/10/21/getting-the-printer-friendly-name-from-the-device-center-shell-folder/
// PKEY_Devices_InterfacePaths doesn't seem to ever be found, but PKEY_Devices_FriendlyName works so...
shellItem.GetString(PKEY.Devices_FriendlyName, out var friendlyName).ThrowIfError();
return(friendlyName.ReadAndFree());
}
