# Struct glib::translate::Stash [−] [src]

    pub struct Stash<'a, P: Copy, T: ?Sized + ToGlibPtr<'a, P>>(pub P, pub <T as ToGlibPtr<'a, P>>::Storage);

Helper type that stores temporary values used for translation.

`P` is the foreign type pointer and the first element of the tuple.

`T` is the Rust type that is translated.

The second element of the tuple is the temporary storage defined by the implementation of `ToGlibPtr<P> for T`

Say you want to pass a `*mut GdkWindowAttr` to a foreign function. The `Stash` will own a `GdkWindowAttr` and a `CString` that `GdkWindowAttr::title` points into.

ⓘThis example is not tested

    impl <'a> ToGlibPtr<'a, *mut glib_ffi::GdkWindowAttr> for WindowAttr {
        type Storage = (Box<glib_ffi::GdkWindowAttr>, Stash<'a, *const c_char, Option<String>>);

        fn to_glib_none(&'a self) -> Stash<*mut glib_ffi::GdkWindowAttr, WindowAttr> {
            let title = self.title.to_glib_none();

            let mut attrs = Box::new(glib_ffi::GdkWindowAttr {
                title: title.0,
                // ....
            });

            Stash(&mut *attrs, (attrs, title))
        }
    }

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