Vcl.Graphics.TCustomCanvas.RequiredState
Delphi
procedure RequiredState(ReqState: TCanvasState); virtual; abstract;
C++
virtual void __fastcall RequiredState(TCanvasState ReqState) = 0 ;
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
procedure function |
protected | Vcl.Graphics.pas Vcl.Graphics.hpp |
Vcl.Graphics | TCustomCanvas |
Description
Changes the current state of the canvas to meet the given requirements.
Override RequiredState in descending classes. RequiredState ensures that a canvas meets a set of given requirements. If the requirements are not met, the canvas initializes its internal structures so that the requirements are met after the call to RequiredState is completed.