▼ |  | The Racket Graphical Interface Toolkit

1 | Windowing
2 | Widget Gallery
3 | Windowing Classes
4 | Windowing Functions
5 | Editors
6 | Snip and Style Classes
7 | Editor Classes
8 | Editor Functions
9 | WXME Decoding
10 | Preferences
11 | Dynamic Loading
12 | Startup Actions
13 | Init Libraries
14 | Platform Dependencies
| Index

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### 14`` Platform Dependencies

See Platform Dependencies in The Racket Drawing Toolkit for information on platform library dependencies for racket/draw. On Unix, GTK+ 3 is used if its libraries can be found and the PLT_GTK2 environment is not defined. Otherwise, GTK+ 2 is used. The following additional system libraries must be installed for racket/gui/base in either case:

- "libgdk-3.0[.0]" (GTK+ 3) or "libgdk-x11-2.0[.0]" (GTK+ 2)

- "libgdk_pixbuf-2.0[.0]" (GTK+ 2)

- "libgtk-3.0[.0]" (GTK+ 3) or "libgtk-x11-2.0[.0]" (GTK+ 2)

- "libgio-2.0[.0]" — optional, for detecting interface scaling

- "libGL[.1]" — optional, for OpenGL support

- "libunique-1.0[.0]" — optional, for single-instance support (GTK+ 2)

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