public override void MouseClick(PointF location, Keys controlKeys) { GraphicBaseElement element = m_Editor.GetElementAt(location); if (element == null) { if (m_FromElement != null) { //floating connection - create a new connection line FloatingConnection(location); m_LastMouseLocation = location; } return; } if (element is GraphicInputOutputElement == false && element is GraphicConnection == false) { return; } //user clicked a terminal of an element GraphicInputOutputElement ioelem = element as GraphicInputOutputElement; GraphicTerminal graphicTerminal = null; if (ioelem != null) { graphicTerminal = ioelem.GetTerminalAt(location); if (graphicTerminal == null || graphicTerminal.Equals(m_FromElement)) { return; } if (m_FromElement == null) { m_FromElement = graphicTerminal; m_LastMouseLocation = location; return; } TryConnectToTerminal(graphicTerminal, location); m_LastMouseLocation = location; } //user clicked a connection GraphicConnection connection = element as GraphicConnection; if (connection != null) { if (connection.Equals(m_FromElement)) { return; } if (m_FromElement == null) { m_FromElement = connection; m_LastMouseLocation = location; return; } TryConnectToConnection(connection, location); m_LastMouseLocation = location; } }