message: Replaced obsolete function with new one.
diff: @@ -1651,7 +1651,7 @@ void ImGui::ShowTestWindow(bool* p_open)
  if (ImGui::TreeNode("Horizontal Scrolling"))
  {
  - ImGui::SetNextWindowContentWidth(1500);
  + ImGui::SetNextWindowContentSize(ImVec2(1500.0f, 0.0f));
  ImGui::BeginChild("##ScrollingRegion", ImVec2(0, ImGui::GetFontSize() * 20), false, ImGuiWindowFlags_HorizontalScrollbar);
  ImGui::Columns(10);
  int ITEMS_COUNT = 2000;
  