-
Notifications
You must be signed in to change notification settings - Fork 1
/
python-xlib_3.html
121 lines (110 loc) · 5.13 KB
/
python-xlib_3.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<!-- Created on September 16, 2020 by texi2html 5.0
texi2html was written by:
Lionel Cons <[email protected]> (original author)
Karl Berry <[email protected]>
Olaf Bachmann <[email protected]>
and many others.
Maintained by: Many creative people.
Send bugs and suggestions to <[email protected]>
-->
<head>
<title>The Python X Library: 3 Connect to a Display</title>
<meta name="description" content="The Python X Library: 3 Connect to a Display">
<meta name="keywords" content="The Python X Library: 3 Connect to a Display">
<meta name="resource-type" content="document">
<meta name="distribution" content="global">
<meta name="Generator" content="texi2html 5.0">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<style type="text/css">
<!--
a.summary-letter {text-decoration: none}
blockquote.smallquotation {font-size: smaller}
div.display {margin-left: 3.2em}
div.example {margin-left: 3.2em}
div.lisp {margin-left: 3.2em}
div.smalldisplay {margin-left: 3.2em}
div.smallexample {margin-left: 3.2em}
div.smalllisp {margin-left: 3.2em}
pre.display {font-family: serif}
pre.format {font-family: serif}
pre.menu-comment {font-family: serif}
pre.menu-preformatted {font-family: serif}
pre.smalldisplay {font-family: serif; font-size: smaller}
pre.smallexample {font-size: smaller}
pre.smallformat {font-family: serif; font-size: smaller}
pre.smalllisp {font-size: smaller}
span.nocodebreak {white-space:pre}
span.nolinebreak {white-space:pre}
span.roman {font-family:serif; font-weight:normal}
span.sansserif {font-family:sans-serif; font-weight:normal}
ul.no-bullet {list-style: none}
-->
</style>
</head>
<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
<a name="Connect-to-a-Display"></a>
<table class="header" cellpadding="1" cellspacing="1" border="0">
<tr><td valign="middle" align="left">[<a href="python-xlib_2.html#Package-Layout" title="Beginning of this chapter or previous chapter"> << </a>]</td>
<td valign="middle" align="left">[<a href="python-xlib_2.html#Package-Layout" title="Previous section in reading order"> < </a>]</td>
<td valign="middle" align="left">[<a href="python-xlib.html#Top" title="Up section"> Up </a>]</td>
<td valign="middle" align="left">[<a href="python-xlib_4.html#Unix-Display-Names" title="Next section in reading order"> > </a>]</td>
<td valign="middle" align="left">[<a href="python-xlib_6.html#Error-Handling" title="Next chapter"> >> </a>]</td>
<td valign="middle" align="left"> </td>
<td valign="middle" align="left"> </td>
<td valign="middle" align="left"> </td>
<td valign="middle" align="left"> </td>
<td valign="middle" align="left">[<a href="python-xlib.html#Top" title="Cover (top) of document">Top</a>]</td>
<td valign="middle" align="left">[<a href="python-xlib_toc.html#SEC_Contents" title="Table of contents">Contents</a>]</td>
<td valign="middle" align="left">[Index]</td>
<td valign="middle" align="left">[<a href="python-xlib_abt.html#SEC_About" title="About (help)"> ? </a>]</td>
</tr></table>
<hr>
<a name="Connect-to-a-Display-1"></a>
<h1 class="chapter">3 Connect to a Display</h1>
<p>To be able to perform any X operations, you must first establish a
connection to the display. This is done by instantiating a
<code>display.Display</code> object:
</p>
<dl>
<dt><a name="index-Display"></a>Class: <strong>Display</strong><em> ( [ displayname ] )</em></dt>
<dd>
<p>Create a connection to the display called <var>displayname</var>. If
<var>displayname</var> is None or not provided, connect to the default
display.
</p>
<p>If the connection fails for some reason, one of the errors from the
following error class tree is raised:
</p>
<div class="display">
<pre class="display">Exception
\_error.DisplayError
\_error.DisplayNameError
\_error.DisplayConnectionError
</pre></div>
<p><code>error.DisplayNameError</code> is raised if <var>displayname</var>, or the
default display name, is malformed. <code>error.DisplayConnectionError</code>
is raised if the connection to the X server fails. This might be caused
by the network connection to the display failing, or if the client
isn’t authorized to connect to the display.
</p>
</dd></dl>
<p>The syntax of a display name and how the library finds the default
display name depends on the operating system where the client runs.
</p>
<table class="menu" border="0" cellspacing="0">
<tr><td align="left" valign="top"><a href="python-xlib_4.html#Unix-Display-Names">3.1 Unix Display Names</a></td><td> </td><td align="left" valign="top"> Most Unix-style operating systems.
</td></tr>
<tr><td align="left" valign="top"><a href="python-xlib_5.html#OpenVMS-Display-Names">3.2 OpenVMS Display Names</a></td><td> </td><td align="left" valign="top"> Digital^H^H^H^H^H^H^HCompaq OpenVMS.
</td></tr>
</table>
<hr>
<p>
<font size="-1">
This document was generated on <i>September 16, 2020</i> using <a href="http://www.nongnu.org/texi2html/"><i>texi2html 5.0</i></a>.
</font>
<br>
</p>
</body>
</html>