Using the Canvas

Go Up to Using Canvases for Drawing

The canvas class encapsulates graphics controls at several levels. Some of these are:

• High-level functions for drawing individual lines, shapes, and text.
• Intermediate-level properties for manipulating the drawing capabilities of the canvas.
• Low-level properties in the component library that provide access to the Windows GDI.

The following table summarizes the capabilities of the canvas.

Canvas capability summary

Level	Operation	Tools
High	Drawing lines and shapes	Methods such as MoveTo, LineTo, Rectangle, and Ellipse
	Displaying and measuring text	TextOut, TextHeight, TextWidth, and TextRect methods
	Filling areas	FillRect and FloodFill methods
Intermediate	Customizing text and graphics	Pen, Brush, and Font properties
	Manipulating pixels	Pixels property
	Copying and merging images	Draw, StretchDraw, BrushCopy, and CopyRect methods; CopyMode property
Low	Calling Windows GDI functions	Handle property

See Also

• Using Canvases for Drawing
• Using the Direct2D Canvas
• Vcl.Graphics.TCustomCanvas
• Vcl.Graphics.TCanvas
• Vcl.Controls.TControlCanvas
• Vcl.Direct2D.TDirect2DCanvas