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KDE 4.9 PyKDE API Reference
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<h1>KSystemEventFilter Namespace Reference</h1>
<code>from PyKDE4.kdeui.KSystemEventFilter import *</code>
<p>
<h2>Detailed Description</h2>
<p>Members of this namespace allow installing and removing global event-filters
that will catch all window system events the application receives.
</p>
<p>
<dl class="author" compact><dt><b>Author:</b></dt><dd> Michael Leupold <lemma@confuego.org> </dd></dl>
</p>
<table border="0" cellpadding="0" cellspacing="0"><tr><td colspan="2"><br><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#installEventFilter">installEventFilter</a> (QWidget filter)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#removeEventFilter">removeEventFilter</a> (QWidget filter)</td></tr>
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<hr><h2>Function Documentation</h2><a class="anchor" name="installEventFilter"></a>
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<td class="memname"> installEventFilter</td>
<td>(</td>
<td class="paramtype">QWidget </td>
<td class="paramname"><em>filter</em></td>
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<div class="memdoc"><p>Installs a widget filter as a global X11 event filter.
</p>
<p>
The widget filter receives all events in its standard x11Event(), winEvent(),
qwsEvent() and macEvent() event handler functions. When the filter widget is
destroyed, it is automatically removed from the list of known filters. Each filter
widget can be added (and will be called) only once.
The function doesn't transfer the widget filter's ownership, so the code installing
the event filter is responsible for freeing it if it's no longer needed.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>filter</em> </td><td> the filter widget to install
</td></tr>
</table></dl>
<p> @remarks The order in which installed event filters are called is arbitrary.
Processing the events will stop as soon as a filter "consumes" an
event (ie. the *Event() method returns true).
Also note that the result parameter of the widget filter'
winEvent() method will be discarded.
</p>
<p>
<dl class="warning" compact><dt><b>Warning:</b></dt><dd> Only do this when absolutely necessary. An installed event filter
can slow things down.
</dd></dl>
</p></div></div><a class="anchor" name="removeEventFilter"></a>
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<td class="memname"> removeEventFilter</td>
<td>(</td>
<td class="paramtype">QWidget </td>
<td class="paramname"><em>filter</em></td>
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<td>)</td>
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<div class="memdoc"><p>Removes a global widget filter.
</p></div></div>
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