ScriptableRenderPipeline/MaterialGraphProject/Assets/NewUI/Editor/Manipulators/MouseButton.cs

namespace RMGUI.GraphView
{
	// TODO We could move that higher in RMGUI.
	public enum MouseButton
	{
		LeftMouse = 0,
		RightMouse = 1,
		MiddleMouse = 2
	}
}