How can I click a button in a table column easily

I can see that I have to access a child if the table has a scrollbar, and no child if there is no scrollbar. Is there maybe a helper to hide this fact that I've just not yet seen?

if (ImGui::BeginTable("##someid", 2, ImGuiTableFlags_Resizable | ImGuiTableFlags_NoSavedSettings | ImGuiTableFlags_Borders | ImGuiTableFlags_RowBg | ImGuiTableFlags_ScrollY)) {
 ImGui::TableSetupColumn("Col1");
 ImGui::TableSetupColumn("Col2");
 ImGui::TableHeadersRow();
 { // here the for loop
  ImGui::TableNextRow();
  ImGui::TableNextColumn();
  ImGuiTreeNodeFlags treeFlags = ImGuiTreeNodeFlags_SpanFullWidth | ImGuiTreeNodeFlags_SpanAllColumns | ImGuiTreeNodeFlags_SpanAvailWidth;
  if (ImGui::TreeNodeEx("treenode", treeFlags)) {
   if (ImGui::Button("Button1")) {
    // do something
   }
   ImGui::TreePop();
  }
 }
 ImGui::EndTable();
}

I could use ctx->WindowInfo() - but as far as I can see this would only work if the table has the scrolling activated.

Start by reproducing the shown BeginTable/TableNextColumn/Button example with and without ImGuiTableFlags_ScrollY, and inspect how ctx->WindowInfo() is used. Define a helper or API that allows the button to be accessed consistently in both cases, then verify the example works for each table configuration.