translate pascal to c++

问题

The following code runs in the ItemClickEx event of a firemonkey ListView. I want to know how to do this in C++.

procedure TfrmCategory.lstListCategoryItemClickEx(const Sender: TObject; 
                         ItemIndex: Integer; const LocalClickPos: TPointF;
    const ItemObject: TListItemObject);

begin
    if ItemObject is TListItemAccessory then
     begin
      ShowMessage('Acessory clicked');
     end;

end;

Source: link here.

I don't know how to do the "if ItemObject is TListItemAccessory" in c++.

回答1:

The C++ equivalent to Delphi's is operator is dynamic_cast, eg:

void __fastcall  TfrmCategory::lstListCategoryItemClickEx(const TObject *Sender,
    int ItemIndex, const TPointF &LocalClickPos, const TListItemObject* ItemObject)
{
    if (dynamic_cast<const TListItemAccessory*>(ItemObject))
        ShowMessage(L"Acessory clicked");
}

回答2:

Ok, looks like it is as simple as:

  if (ItemObject->Name == "I") {
     ShowMessage("Item Image clicked");
  }
  if (ItemObject->Name == "T") {
     ShowMessage("Item Text clicked");
  }
  if (ItemObject->Name == "A") {
     ShowMessage("Item Accessory clicked");
  }

This works on iOS as well as Win.

来源：https://stackoverflow.com/questions/49837687/translate-pascal-to-c