port-drawing-mode-quality-p Generic Function

Summary

Tests whether a port does quality drawing.

Package

graphics-ports

Signature

port-drawing-mode-quality-p port => result

Arguments

port⇩

A graphics port.

Values

result

A boolean.

Description

The generic function port-drawing-mode-quality-p returns true if the graphics port port does quality drawing.

A port does quality drawing if both:

1. It was not made with drawing-mode :compatible.
2. The underlying library supports quality drawing.

Microsoft Windows and Cocoa always support quality drawing, GTK+ supports it from version 2.8 and greater, but Motif never supports it.

Examples

(example-edit-file "capi/graphics/images-with-alpha")

See also

13.2.1 The drawing mode and anti-aliasing.