[Xcb] [Bug 78140] The tutorial should have a section on error handling

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=78140

--- Comment #1 from Uli Schlachter <psychon at znc.in> ---
Uhm. Error replies from the server should be explained sufficently, I guess
(the whole deal with "checked vs unchecked errors").

For out of memory errors or I/O errors, the xcb_connection_t goes into an error
state. All function calls with it will fail and xcb_connection_has_error() can
tell you which error occured (there are some defines in xcb.h with a XCB_CONN_
prefix).

XCB never calls exit().

Would it be too much work for you to create a patch for the tutorial that adds
what you would have wanted to know? It should be available in git at
https://secure.freedesktop.org/cgit/xcb/ and clonable
fromgit://wiki.freedesktop.org/wiki/xcb.

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