To install this package, run in Emacs:
M-x package-install RET xelb RET
Overview -------- XELB (X protocol Emacs Lisp Binding) is a pure Elisp implementation of X11 protocol based on the XML description files from XCB project. It features an object-oriented API and permits a certain degree of concurrency. It should enable you to implement some low-level X11 applications. How it works ------------ As is well known, X11 is a network-transparent protocol. All its messages, including requests, replies, events, errors, etc are transported over network. Considering that Emacs is powerful enough to do network communication, it is also possible to use Emacs to send / receive those X11 messages. Here we fully exploit the asynchronous feature of network connections in Emacs, making XELB concurrent in a sense. X11 protocol is somewhat complicated, especially when extension protocols are also concerned. Fortunately, XCB project has managed to describe these protocols as XML files, which are language-neutral and can be used to generate language-specific bindings. In XELB, X messages are represented as 'classes', and their 'methodes' are provided to translate them to / from raw byte arrays conveniently. Usage ----- Interfaces are mainly defined in 'xcb.el'. Please refer to that file on how to use them. Most of other files are either X11 core / extension protocol libraries (e.g. xcb-randr.el) or utility libraries (e.g. xcb-keysyms.el). Please check the corresponding files for more details.