Vcl.Graphics.TCanvas
Delphi
TCanvas = class(TCustomCanvas)
C++
class PASCALIMPLEMENTATION TCanvas : public TCustomCanvas
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| class | public | Vcl.Graphics.pas Vcl.Graphics.hpp |
Vcl.Graphics | Vcl.Graphics |
Description
TCanvas provides an abstract drawing space for objects that must render their own images.
Use TCanvas as a drawing surface for objects that draw an image of themselves. Standard window controls such as edit controls or list boxes do not require a canvas, as they are drawn by the system.
TCanvas provides properties, events, and methods that assist in creating an image by:
- Specifying the type of brush, pen, and font to use.
- Drawing and filling a variety of shapes and lines.
- Writing text.
- Rendering graphic images.
- Enabling a response to changes in the current image.
TCanvas has two descendants, TControlCanvas and TMetafileCanvas, which assist in drawing images of controls and in creating metafile images for objects.