Vcl.Graphics.TCustomCanvas.TextExtent
Delphi
function TextExtent(const Text: string): TSize; virtual; abstract;
C++
virtual System::Types::TSize __fastcall TextExtent(const System::UnicodeString Text) = 0 ;
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| function | public | Vcl.Graphics.pas Vcl.Graphics.hpp |
Vcl.Graphics | TCustomCanvas |
Description
Returns the width and height, in pixels, of a string rendered in the current font.
Override the TextExtent method to provide the information about the space a string will occupy in the image. Other elements in the image such as lines, boxes, or additional lines of text can be positioned to accommodate the size of the text. TextExtent returns the width and height of the rectangle that bounds the text on the canvas.
Both the TextHeight and TextWidth methods call TextExtent to obtain the height and width information.