How to draw a toolbar

gistfile1.cs

        EditorGUILayout.BeginHorizontal(EditorStyles.toolbar);
        GUILayout.Label("Toolbar Title");
        GUILayout.FlexibleSpace();
        if (GUILayout.Button("A", EditorStyles.toolbarButton))
        {
            // does something
        }
        if (GUILayout.Button("B", EditorStyles.toolbarButton))
        {
            // does something
        }
        if (GUILayout.Button("C", EditorStyles.toolbarButton))
        {
            // does something
        }
        EditorGUILayout.EndHorizontal();