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Graphics

The graphics library provides a set of portable drawing primitives. Drawing takes place in a separate window that is created when Graphics.open_graph is called. It used to be distributed with OCaml up to OCaml 4.08.

On Unix

On Unix graphics uses the X11 windows system.

Here are the graphics mode specifications supported by Graphics.open_graph on the X11 implementation of this library: the argument to Graphics.open_graph has the format "display-name geometry", where display-name is the name of the X-windows display to connect to, and geometry is a standard X-windows geometry specification. The two components are separated by a space. Either can be omitted, or both. Examples:

  • Graphics.open_graph "foo:0": connects to the display foo:0 and creates a window with the default geometry
  • Graphics.open_graph "foo:0 300x100+50-0" connects to the display foo:0 and creates a window 300 pixels wide by 100 pixels tall, at location (50,0)
  • Graphics.open_graph " 300x100+50-0" connects to the default display and creates a window 300 pixels wide by 100 pixels tall, at location (50,0)
  • Graphics.open_graph "" connects to the default display and creates a window with the default geometry.

On Windows

On Windows graphics uses the native Win32 API.