Can Libreoffice basic macros listen loading a file?

edit

@karolus - simple but effective - Very Nice!

we need first to check if we just open writer:

sub example
doc = thisComponent
if doc.Identifier = "com.sun.star.text.TextDocument" then
    msgbox( doc.Title )
end if
end sub

Hey \o/ Thanks for that simple and handy solution. It works for open a file while libreoffice running. But when i double click an odt document when libreoffce is off i see "Basic Runtime Error: Property or method not found:Identifier". I think that cause of ThisComponent What can i use instead of ThisComponent to specify writer component?

I cannot reproduce the Issue, it works for me also with completely closed LO and double clicking some LO-file.
to restrict your code running only on writer-docs see the example in my last comment above yours.

That error was cause of my fault. I works now correctly. Thanks.