internal ChangeNotifyLock(Message message)
{
IntPtr pidl;
IntPtr lockId = ShellNativeMethods.SHChangeNotification_Lock(
message.WParam, (int)message.LParam, out pidl, out _event);
try
{
Trace.TraceInformation("Message: {0}", (ShellObjectChangeTypes)_event);
var notifyStruct = pidl.MarshalAs <ShellNativeMethods.ShellNotifyStruct>();
Guid guid = new Guid(ShellIIDGuid.IShellItem2);
if (notifyStruct.item1 != IntPtr.Zero &&
(((ShellObjectChangeTypes)_event) & ShellObjectChangeTypes.SystemImageUpdate) == ShellObjectChangeTypes.None)
{
IShellItem2 nativeShellItem;
if (CoreErrorHelper.Succeeded(ShellNativeMethods.SHCreateItemFromIDList(
notifyStruct.item1, ref guid, out nativeShellItem)))
{
string name;
nativeShellItem.GetDisplayName(ShellNativeMethods.ShellItemDesignNameOptions.FileSystemPath,
out name);
ItemName = name;
Trace.TraceInformation("Item1: {0}", ItemName);
}
}
else
{
ImageIndex = notifyStruct.item1.ToInt32();
}
if (notifyStruct.item2 != IntPtr.Zero)
{
IShellItem2 nativeShellItem;
if (CoreErrorHelper.Succeeded(ShellNativeMethods.SHCreateItemFromIDList(
notifyStruct.item2, ref guid, out nativeShellItem)))
{
string name;
nativeShellItem.GetDisplayName(ShellNativeMethods.ShellItemDesignNameOptions.FileSystemPath,
out name);
ItemName2 = name;
Trace.TraceInformation("Item2: {0}", ItemName2);
}
}
}
finally
{
if (lockId != IntPtr.Zero)
{
ShellNativeMethods.SHChangeNotification_Unlock(lockId);
}
}
}
/// <summary>
/// Constructs a new Shell object from IDList pointer
/// </summary>
/// <param name="idListPtr"></param>
/// <returns></returns>
internal static ShellObject Create(IntPtr idListPtr)
{
// Throw exception if not running on Win7 or newer.
CoreHelpers.ThrowIfNotVista();
Guid guid = new Guid(ShellIIDGuid.IShellItem2);
IShellItem2 nativeShellItem;
int retCode = ShellNativeMethods.SHCreateItemFromIDList(idListPtr, ref guid, out nativeShellItem);
if (!CoreErrorHelper.Succeeded(retCode))
{
return(null);
}
return(ShellObjectFactory.Create(nativeShellItem));
}