TECH TIP: Draw Command Architecture Page Objects When a report prints it generates Page objects. Each Page object contains an array of DrawCommand objects (Page.DrawCommands[]) that describe what needs to be rendered for the page. Report –> Pages.DrawCommands[] —> Device (Printer, Screen, ..) –> final output DrawCommands Objects Component –> DrawCommand Each TppComponent generates a  Full Article…

TECH TIP: How to Make a Data-Aware RB Component Publish the DataPipeline and DataField properties. These are declared in the ancestor class TppPrintable (ppPrnabl.pas). Override the public IsDataAware function from TppPrintable class to return True. function TmyDBComponent.IsDataAware: Boolean; begin Result := True; end; Override the public Notify method from the ancestor to redraw the design  Full Article…