Thanks for your help, Brett.

I was look at some plugins, like bookmarks and file, and I saw thet there is a line like "elgg_register_plugin_hook_handler...", that is usually in start.php.

For example, in the plugin file there's a line in start.php like this:

// add a file link to owner blocks
elgg_register_plugin_hook_handler('register', 'menu:owner_block', 'file_owner_block_menu');

So in my plugin I use this:

elgg_unregister_plugin_hook_handler('register', 'menu:owner_block', 'file_owner_block_menu');

And then the item in the owner_block menu disappear. That's what I wanted to get.

I search for the 'prepare' option use instead of 'register', but I don't find a useful information.

Well, moreless I solved it.

Now, I have other question, but it's probably less important.

There are some items in the menus that have icons. In some plugins, when the callback is registered with the elgg_register_plugin_hook_handler function, when the content is executed, it loads the item, the url, and the icon. I'm interesting in create a new item menu with a customized icon.

I know that icon is used as an entity, but althougth I look over the code of the file_owner_block_menu function, I cannot get how that icon is put into the  item menu.

Any idea of how to get it? Thanks again

I recently finished writing a documentation for the menus. Take a look: http://learn.elgg.org/en/1.9/guides/menus.html

It includes an example on how to add an icon as the menu link.

Thanks Juho.

I'll have a look on it ;-)

The contents of $vars is build in part by what you provide to elgg_view("some view", $your_vars) and it has some default values which you can find here https://github.com/Elgg/Elgg/blob/1.x/engine/classes/Elgg/ViewsService.php#L188-L319

Thanks a lot for your help, Jerome!