Why can a u32 not be accepted as IntoParam<VARIANT>

[psmit]

I'm having the following code:

    let hwnd = GetForegroundWindow();
    let acc_obj : IAccessible  = AccessibleObjectFromWindow(hwnd,0 )?;
    println!("{:?}", acc_obj.get_accName(CHILDID_SELF)?);

But this fails to compile:

error[E0277]: the trait bound `u32: windows::traits::into_param::IntoParam<'_, VARIANT>` is not satisfied
  --> src\main.rs:18:42
   |
18 |     println!("{:?}", acc_obj.get_accName(CHILDID_SELF)?);
   |                                          ^^^^^^^^^^^^ the trait `windows::traits::into_param::IntoParam<'_, VARIANT>` is not implemented for `u32`

Why is it not possible to do this? Abi is implemented for u32, and IntoParam<'_, VARIANT> should be implemented for Abi? I'm I doing something wrong?

[kennykerr]

There is very minimal support for VARIANT at the moment. #539

I hope to address this soon.

[psmit]

Thanks for your quick reply. As you mention minimal support, is there a workaround to initialize or read a VARIANT at this moment?

[kennykerr]

You can of course initialize and read the values within the underlying VARIANT struct yourself.

[riverar]

PROPVARIANT initialization example may help here:
#976 (comment)

[kennykerr]

Duplicate of #539