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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.

Value

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, and

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

The drawing mode and anti-aliasing.


CAPI User Guide and Reference Manual (Windows version) - 3 Aug 2017

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