[Help] Using IOleObject interface

[konghk78]

Hello,

Currently, I'm trying to use IOleObject interface.
To fulfill the interface, it seems like I should provide IOleClientSite implementation via SetClientSite.

#[uuid("00000118-0000-0000-C000-000000000046")]
pub unsafe interface IOleClientSite: IUnknown {
    pub unsafe fn save_object(&self) -> HRESULT;
    pub unsafe fn get_moniker(&self) -> HRESULT;
    pub unsafe fn get_container(&self) -> HRESULT;
    pub unsafe fn show_object(&self) -> HRESULT;
    pub unsafe fn on_show_window(&self) -> HRESULT;
    pub unsafe fn request_new_object_layout(&self) -> HRESULT;
}

#[uuid("00000112-0000-0000-C000-000000000046")]
pub unsafe interface IOleObject: IUnknown {
    pub unsafe fn set_client_site(&self, **ole_clinet_site: IOleClientSite**) -> HRESULT; //required
    pub unsafe fn get_client_site(
        &self,
        ole_clinet_site: IOleClientSite,
    ) -> HRESULT;

    // skip

    pub unsafe fn enum_advise(&self) -> HRESULT;
    pub unsafe fn get_misc_status(&self, dw_aspect: INT, dw_status: *mut INT) -> HRESULT; //required
    pub unsafe fn set_color_scheme(&self) -> HRESULT;
}

I tried to use class! macro to implement IOleClientSite interface.
I couldn't find a way to use OleClientSite class as an input of set_client_site.
I'm new to both rust and com, so any comment would be appreciated.

class! {
    pub class OleClientSite: IOleClientSite {
    }

    impl IOleClientSite for OleClientSite {
        unsafe fn save_object(&self) -> HRESULT
        {
            let result:HRESULT = 0;
            result
        }
        unsafe fn get_moniker(&self) -> HRESULT
        {
            let result:HRESULT = 0;
            result
        }
        unsafe fn get_container(&self) -> HRESULT
        {
            let result:HRESULT = 0;
            result
        }
        unsafe fn show_object(&self) -> HRESULT
        {
            let result:HRESULT = 0;
            result
        }
        unsafe fn on_show_window(&self) -> HRESULT
        {
            let result:HRESULT = 0;
            result
        }
        unsafe fn request_new_object_layout(&self) -> HRESULT
        {
            let result:HRESULT = 0;
            result
        }
    }
}

impl Default for OleClientSite {
    // Required for com-rs, even if we never want it to create an instance for us.
    fn default() -> Self {
        OleClientSite::new()
    }
}

[rylev]

I'm not familiar at all with Ole so I hope I can help.

You'll need the changes in #163 for this to work. The signature of set_client_site should be:

pub unsafe fn set_client_site(&self, client_site: IOleClientSite) -> HRESULT;

if you want to set your OleClientSite class then you need to first create and allocate one:

// assumes you already have a handle to an `IOleObject` in an `ole_object` variable
let client_site = OleClientSite::alloc::<IOleClientSite>(OleClientSite::default()).expect("Could not get OleClientSite class as an IOleClientSite");
ole_object.set_client_site(client_site);

[konghk78]

Thanks a lot for the answer!