Method SetupColumnDefinitions

Xaml/Controls/UniformGrid.cpp:262–294

	}

	void UniformGrid::SetupColumnDefinitions(uint32_t columns)
	{
		const auto definitions = ColumnDefinitions();

		// Mark initial definitions so we don't erase them.
		for (const auto &cd : definitions)
		{
			if (!GetAutoLayout(cd))
			{
				SetAutoLayout(cd, false);
			}
		}

		// Remove non-autolayout rows we've added and then add them in the right spots.
		if (columns != definitions.Size())
		{
			for (int32_t c = definitions.Size() - 1; c >= 0; c--)
			{
				const auto layout = GetAutoLayout(definitions.GetAt(c));
				if (layout && layout.Value())
				{
					definitions.RemoveAt(c);
				}
			}

			for (uint32_t c = definitions.Size(); c < columns; c++)
			{
				wux::Controls::ColumnDefinition cd;
				SetAutoLayout(cd, true);
				definitions.InsertAt(c, cd);
			}
		}
	}

	bool UniformGrid::GetSpot(int i, int j)
	{