GeezerVison is showing github.com — python-xlib.github.io/python-xlib_11.html at master · python-xlib/python-xlib.github.io

Expand file tree

python-xlib_11.html

Copy path

More file actions

Latest commit

History

176 lines (166 loc) · 8.79 KB

python-xlib_11.html

Copy path

File metadata and controls

176 lines (166 loc) · 8.79 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

<!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: 5.2 Selecting Events</title>

<!--

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>

<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>

</tr></table>

<hr>

<h2 class="section">5.2 Selecting Events</h2>

<p>To avoid flooding the clients with events in which they have no

interest, they must explicitly tell the server which events they are

interested in. This is done by providing the <code>event_mask</code>

attribute when creating windows with <code>Window.create_window</code> or in

calls to <code>Window.change_attributes</code>. The value of this attribute

is a mask of all types of events the client is interested in on that

particular window. Whenever the server generates an event for a window

which matches the clients event mask on that window, the event will be

sent to the client.

</p>

<p>The following table lists all event masks and the corresponding event

types and classes. All event masks and types are integer constants

defined in the module <code>Xlib.X</code>. Classes have the same name as the

event type, and are defined in <code>Xlib.protocol.event</code>.

</p>

<table>

<tr><td><strong>Mask</strong></td><td><strong>Type and Class</strong></td><td><strong>Generated when</strong></td></tr>

<tr><td>ButtonMotionMask <br> Button1MotionMask <br> Button2MotionMask <br> Button3MotionMask <br> Button4MotionMask <br> Button5MotionMask</td><td>MotionNotify</td><td>Pointer moved with any or a certain button down</td></tr>

<tr><td>ButtonPressMask</td><td>ButtonPress</td><td>Pointer button pressed</td></tr>

<tr><td>ButtonReleaseMask</td><td>ButtonRelease</td><td>Pointer button released</td></tr>

<tr><td>ColormapChangeMask</td><td>ColormapNotify</td><td>Colormap changed or installed</td></tr>

<tr><td>EnterWindowMask</td><td>EnterNotify</td><td>Pointer enters window</td></tr>

<tr><td>LeaveWindowMask</td><td>LeaveNotify</td><td>Pointer leaves window</td></tr>

<tr><td>ExposureMask</td><td>Expose <br> NoExpose</td><td>Window needs to be redrawn</td></tr>

<tr><td>FocusChangeMask</td><td>FocusIn <br> FocusOut</td><td>Focus changes</td></tr>

<tr><td>KeymapStateMask</td><td>KeymapNotify</td><td>After EnterNotify and FocusIn</td></tr>

<tr><td>KeyPressMask</td><td>KeyPress</td><td>Key is pressed</td></tr>

<tr><td>KeyReleaseMask</td><td>ReleasePress</td><td>Key is released</td></tr>

<tr><td>PointerMotionMask</td><td>MotionNotify</td><td>Pointer is moved</td></tr>

<tr><td>PropertyChangeMask</td><td>PropertyNotify</td><td>Window properties change</td></tr>

<tr><td>StructureNotifyMask</td><td>CirculateNotify <br>

ConfigureNotify <br>

DestroyNotify <br>

GravityNotify <br>

MapNotify <br>

ReparentNotify <br>

UnmapNotify</td><td>Window structure changes</td></tr>

<tr><td>SubstructureNotifyMask</td><td>CirculateNotify <br>

ConfigureNotify <br>

CreateNotify <br>

DestroyNotify <br>

GravityNotify <br>

MapNotify <br>

ReparentNotify <br>

UnmapNotify</td><td>Child window structure changes</td></tr>

<tr><td>ResizeRedirectMask</td><td>ResizeRequest</td><td>Controlling window size change</td></tr>

<tr><td>SubstructureRedirectMask</td><td>CirculateRequest <br>

ConfigureRequest <br>

MapRequest</td><td>Controlling changes to child windows</td></tr>

<tr><td>VisibilityChangeMask</td><td>VisibilityNotify</td><td>Window is obscured or visible</td></tr>

</table>

<p>There are also some event types which are always sent to the clients,

regardless of any event masks:

</p>

<table>

<tr><td><strong>Type and Class</strong></td><td><strong>Cut’n’pasting between windows</strong></td></tr>

<tr><td>ClientMessage</td><td>Other client sends message</td></tr>

<tr><td>MappingMotify</td><td>Keyboard mapping changes</td></tr>

<tr><td>SelectionClear <br>

SelectionNotify <br>

SelectionRequest</td><td>Cut’n’pasting between windows</td></tr>

</table>

<hr>

<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>

</tr></table>

<p>

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>