Symbols define the non-geographic aspects of a graphic's appearance, such as color, border width, transparency, and so on. The ArcGIS Runtime SDK for Qt includes many symbol classes, each of which allows you to specify symbology in a unique way. Each symbol type is also specific to one geometry type (that is, point, line, or polygon).
Renderers define one or more symbols to apply to a graphics layer. The symbol applied to each graphic depends on the graphic's attributes. The renderer specifies which attribute values correspond to which symbol.
The available symbols and the geometries to which they apply are summarized in the following table:
Symbolizes points with simple shapes
Symbolizes points with images
Symbolizes points with text
Symbolizes lines with pre-defined styles
Fills polygons with a brush