I wonder if there is an existing GUI component to draw free-style lines, polygons etc. on SAP screen. CL_GUI_PICTURE, CL_GUI_HTML_VIEWER are not sufficient for my requirement. I want to call methods of the component to draw the shapes, prodiving the coordinates, line thickness and color features. So the component must provide a canvas-like attribute and some proper methods for the drawing operations. For example, in .NET, Panel component provides Graphics component in its Paint event which exposes methods like DrawLine, DrawPolygon with some input parameters for developers to make drawing on Panel object.