TGIS_LayerVector.DrawChart method

DK for Delphi | GisLayerVector.TGIS_LayerVector.DrawChart | Constructors | Fields | Methods | Properties | Events

Renders all charts for the layer without redrawing full shape geometry.

Available also on: .NET | Java | ActiveX | Python.

// Delphi
public
  function DrawChart : Boolean;

// C++ Builder
public:
  bool DrawChart(void);

PURPOSE: Draws chart overlays associated with vector features, such as pie, bar, or other statistical diagrams used in thematic GIS visualization.

BEHAVIOR: Renders charts for visible shapes using the current layer state, query filters, and rendering parameters. It does not redraw the underlying shape geometry.

CONSTRAINTS: Requires an active viewer/rendering context. Returns False when no chart can be rendered.