IfcDoc.FormEdit.toolStripMenuItemFileNew_Click C# (CSharp) Method

        private void toolStripMenuItemFileNew_Click(object sender, EventArgs e)
        {
            if (!PromptSave())
                return;

            this.SetCurrentFile(null);

            this.m_lastid = 0;
            this.m_instances.Clear();
            this.m_mapTree.Clear();
            this.m_clipboard = null;

            // init defaults
            this.m_project = new DocProject();

            this.m_project.Annexes[1].Code = "IFC4"; // schema id

            LoadTree();
        }