std::unique_ptr<NWidgetVertical> vert = nullptr; // Storage for all rows.

	std::unique_ptr<NWidgetHorizontal> hor = nullptr; // Storage for buttons in one row.

	int hor_length = 0;

	Dimension sprite_size = GetSpriteSize(SPR_COMPANY_ICON, nullptr, ZOOM_LVL_OUT_4X);

	sprite_size.width  += WidgetDimensions::unscaled.matrix.Horizontal();

	for (WidgetID widnum = widget_first; widnum <= widget_last; widnum++) {

		/* Ensure there is room in 'hor' for another button. */

		if (hor_length == max_length) {

			if (vert == nullptr) vert = std::make_unique<NWidgetVertical>();

			vert->Add(std::move(hor));