Function ShowPlayerPickerUI 

pub unsafe extern "system" fn ShowPlayerPickerUI(
    promptdisplaytext: HSTRING,
    xuids: *const HSTRING,
    xuidscount: usize,
    preselectedxuids: *const HSTRING,
    preselectedxuidscount: usize,
    minselectioncount: usize,
    maxselectioncount: usize,
    completionroutine: PlayerPickerUICompletionRoutine,
    context: *const c_void,
) -> HRESULT