HRESULT XPackageMountWithUiAsync(
  const char * packageIdentifier,
  XAsyncBlock * async
) noexcept;

extern void RenderDlc(const char* packageId, const char* displayName, bool monochrome); 

void ShowDlc() 
{ 
// Enumerate all DLC for the game and render it to the user 
XPackageEnumeratePackages(XPackageKind::Content, XPackageEnumerationScope::ThisAndRelated, nullptr,
 [](void*, const XPackageDetails* details) 
  {     
        RenderDlc(details->packageIdentifier,
                  details->displayName, 
                  details->ageRestricted);
  }); 
} 

 HRESULT MountDlc(const char* packageId, XPackageMountHandle* handle)
 {  
    XAsync async{};  
    RETURN_IF_FAILED(XPackageMountWithUiAsync(packageId, &async));
    RETURN_IF_FAILED(XAsyncGetStatus(&async, true));
    RETURN_IF_FAILED(XPackageMountWithUiResult(&async, handle));  
    return S_OK; 
}