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<?xml version="1.0" encoding="iso-8859-1"?>
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<html><head><title>QEvent Class Reference</title><style>h3.fn,span.fn { margin-left: 1cm; text-indent: -1cm }
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</style></head><body><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr /><td align="left" valign="top" width="32"><img align="left" border="0" height="32" src="images/rb-logo.png" width="32" /></td><td width="1">  </td><td class="postheader" valign="center"><a href="../pyqt4ref.html"><font color="#004faf">Home</font></a> · <a href="classes.html"><font color="#004faf">All Classes</font></a> · <a href="modules.html"><font color="#004faf">Modules</font></a></td></table><h1 align="center">QEvent Class Reference<br /><sup><sup>[<a href="qtcore.html">QtCore</a> module]</sup></sup></h1><p>The QEvent class is the base class of all event classes. Event objects contain event parameters. <a href="#details">More...</a></p>
<p>Inherited by <a href="qactionevent.html">QActionEvent</a>, <a href="qchildevent.html">QChildEvent</a>, <a href="qcloseevent.html">QCloseEvent</a>, <a href="qdragleaveevent.html">QDragLeaveEvent</a>, <a href="qdropevent.html">QDropEvent</a>, <a href="qdynamicpropertychangeevent.html">QDynamicPropertyChangeEvent</a>, <a href="qfileopenevent.html">QFileOpenEvent</a>, <a href="qfocusevent.html">QFocusEvent</a>, <a href="qgestureevent.html">QGestureEvent</a>, <a href="qgraphicssceneevent.html">QGraphicsSceneEvent</a>, <a href="qhelpevent.html">QHelpEvent</a>, <a href="qhideevent.html">QHideEvent</a>, <a href="qhoverevent.html">QHoverEvent</a>, <a href="qicondragevent.html">QIconDragEvent</a>, <a href="qinputevent.html">QInputEvent</a>, <a href="qinputmethodevent.html">QInputMethodEvent</a>, <a href="qmoveevent.html">QMoveEvent</a>, <a href="qpaintevent.html">QPaintEvent</a>, <a href="qresizeevent.html">QResizeEvent</a>, <a href="qshortcutevent.html">QShortcutEvent</a>, <a href="qshowevent.html">QShowEvent</a>, <a href="qstatemachine-signalevent.html">SignalEvent</a>, <a href="qstatemachine-wrappedevent.html">WrappedEvent</a>, <a href="qstatustipevent.html">QStatusTipEvent</a>, <a href="qtimerevent.html">QTimerEvent</a>, <a href="qwhatsthisclickedevent.html">QWhatsThisClickedEvent</a> and <a href="qwindowstatechangeevent.html">QWindowStateChangeEvent</a>.</p><h3>Types</h3><ul><li><div class="fn" />enum <b><a href="qevent.html#Type-enum">Type</a></b> { None, Timer, MouseButtonPress, MouseButtonRelease, ..., MaxUser }</li></ul><h3>Methods</h3><ul><li><div class="fn" /><b><a href="qevent.html#QEvent">__init__</a></b> (<i>self</i>, Type)</li><li><div class="fn" /><b><a href="qevent.html#QEvent-2">__init__</a></b> (<i>self</i>, QEvent)</li><li><div class="fn" /><b><a href="qevent.html#accept">accept</a></b> (<i>self</i>)</li><li><div class="fn" /><b><a href="qevent.html#ignore">ignore</a></b> (<i>self</i>)</li><li><div class="fn" />bool <b><a href="qevent.html#isAccepted">isAccepted</a></b> (<i>self</i>)</li><li><div class="fn" /><b><a href="qevent.html#setAccepted">setAccepted</a></b> (<i>self</i>, bool)</li><li><div class="fn" />bool <b><a href="qevent.html#spontaneous">spontaneous</a></b> (<i>self</i>)</li><li><div class="fn" />Type <b><a href="qevent.html#type">type</a></b> (<i>self</i>)</li></ul><h3>Static Methods</h3><ul><li><div class="fn" />int <b><a href="qevent.html#registerEventType">registerEventType</a></b> (int <i>hint</i> = -1)</li></ul><a name="details" /><hr /><h2>Detailed Description</h2><p>The QEvent class is the base class of all event classes. Event objects contain event parameters.</p>
<p>Qt's main event loop (<a href="qcoreapplication.html#exec">QCoreApplication.exec</a>()) fetches native window system events from the event queue, translates them into QEvents, and sends the translated events to <a href="qobject.html">QObject</a>s.</p>
<p>In general, events come from the underlying window system (<a href="qevent.html#spontaneous">spontaneous</a>() returns true), but it is also possible to manually send events using <a href="qcoreapplication.html#sendEvent">QCoreApplication.sendEvent</a>() and <a href="qcoreapplication.html#postEvent">QCoreApplication.postEvent</a>() (<a href="qevent.html#spontaneous">spontaneous</a>() returns false).</p>
<p>QObjects receive events by having their <a href="qobject.html#event">QObject.event</a>() function called. The function can be reimplemented in subclasses to customize event handling and add additional event types; <a href="qwidget.html#event">QWidget.event</a>() is a notable example. By default, events are dispatched to event handlers like <a href="qobject.html#timerEvent">QObject.timerEvent</a>() and <a href="qwidget.html#mouseMoveEvent">QWidget.mouseMoveEvent</a>(). <a href="qobject.html#installEventFilter">QObject.installEventFilter</a>() allows an object to intercept events destined for another object.</p>
<p>The basic QEvent contains only an event type parameter and an "accept" flag. The accept flag set with <a href="qevent.html#accept">accept</a>(), and cleared with <a href="qevent.html#ignore">ignore</a>(). It is set by default, but don't rely on this as subclasses may choose to clear it in their constructor.</p>
<p>Subclasses of QEvent contain additional parameters that describe the particular event.</p>
<p>See also <a href="qobject.html#event">QObject.event</a>(), <a href="qobject.html#installEventFilter">QObject.installEventFilter</a>(), <a href="qwidget.html#event">QWidget.event</a>(), <a href="qcoreapplication.html#sendEvent">QCoreApplication.sendEvent</a>(), <a href="qcoreapplication.html#postEvent">QCoreApplication.postEvent</a>(), and <a href="qcoreapplication.html#processEvents">QCoreApplication.processEvents</a>().</p>
<hr /><h2>Type Documentation</h2><h3 class="fn"><a name="Type-enum" />QEvent.Type</h3><p>This enum type defines the valid event types in Qt. The event types and the specialized classes for each type are as follows:</p>
<p><table border="1" cellpadding="2" cellspacing="1" class="valuelist" width="100%">
<tr><th width="25%">Constant</th><th width="15%">Value</th><th width="60%">Description</th></tr>
<tr><td valign="top"><tt>QEvent.None</tt></td><td align="center" valign="top"><tt>0</tt></td><td valign="top">Not an event.</td></tr>
<tr><td valign="top"><tt>QEvent.AccessibilityDescription</tt></td><td align="center" valign="top"><tt>130</tt></td><td valign="top">Used to query accessibility description texts (<a href="qaccessibleevent.html">QAccessibleEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.AccessibilityHelp</tt></td><td align="center" valign="top"><tt>119</tt></td><td valign="top">Used to query accessibility help texts (<a href="qaccessibleevent.html">QAccessibleEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.AccessibilityPrepare</tt></td><td align="center" valign="top"><tt>86</tt></td><td valign="top">Accessibility information is requested.</td></tr>
<tr><td valign="top"><tt>QEvent.ActionAdded</tt></td><td align="center" valign="top"><tt>114</tt></td><td valign="top">A new action has been added (<a href="qactionevent.html">QActionEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.ActionChanged</tt></td><td align="center" valign="top"><tt>113</tt></td><td valign="top">An action has been changed (<a href="qactionevent.html">QActionEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.ActionRemoved</tt></td><td align="center" valign="top"><tt>115</tt></td><td valign="top">An action has been removed (<a href="qactionevent.html">QActionEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.ActivationChange</tt></td><td align="center" valign="top"><tt>99</tt></td><td valign="top">A widget's top-level window activation state has changed.</td></tr>
<tr><td valign="top"><tt>QEvent.ApplicationActivate</tt></td><td align="center" valign="top"><tt>121</tt></td><td valign="top">The application has been made available to the user.</td></tr>
<tr><td valign="top"><tt>QEvent.ApplicationActivated</tt></td><td align="center" valign="top"><tt>ApplicationActivate</tt></td><td valign="top">This enum has been deprecated. Use ApplicationActivate instead.</td></tr>
<tr><td valign="top"><tt>QEvent.ApplicationDeactivate</tt></td><td align="center" valign="top"><tt>122</tt></td><td valign="top">The application has been suspended, and is unavailable to the user.</td></tr>
<tr><td valign="top"><tt>QEvent.ApplicationFontChange</tt></td><td align="center" valign="top"><tt>36</tt></td><td valign="top">The default application font has changed.</td></tr>
<tr><td valign="top"><tt>QEvent.ApplicationLayoutDirectionChange</tt></td><td align="center" valign="top"><tt>37</tt></td><td valign="top">The default application layout direction has changed.</td></tr>
<tr><td valign="top"><tt>QEvent.ApplicationPaletteChange</tt></td><td align="center" valign="top"><tt>38</tt></td><td valign="top">The default application palette has changed.</td></tr>
<tr><td valign="top"><tt>QEvent.ApplicationWindowIconChange</tt></td><td align="center" valign="top"><tt>35</tt></td><td valign="top">The application's icon has changed.</td></tr>
<tr><td valign="top"><tt>QEvent.ChildAdded</tt></td><td align="center" valign="top"><tt>68</tt></td><td valign="top">An object gets a child (<a href="qchildevent.html">QChildEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.ChildInserted</tt></td><td align="center" valign="top"><tt>70</tt></td><td valign="top">An object gets a child (<a href="qchildevent.html">QChildEvent</a>). <a href="qt3support.html">Qt3Support</a> only, use ChildAdded instead.</td></tr>
<tr><td valign="top"><tt>QEvent.ChildPolished</tt></td><td align="center" valign="top"><tt>69</tt></td><td valign="top">A widget child gets polished (<a href="qchildevent.html">QChildEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.ChildRemoved</tt></td><td align="center" valign="top"><tt>71</tt></td><td valign="top">An object loses a child (<a href="qchildevent.html">QChildEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.Clipboard</tt></td><td align="center" valign="top"><tt>40</tt></td><td valign="top">The clipboard contents have changed (QClipboardEvent).</td></tr>
<tr><td valign="top"><tt>QEvent.Close</tt></td><td align="center" valign="top"><tt>19</tt></td><td valign="top">Widget was closed (<a href="qcloseevent.html">QCloseEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.CloseSoftwareInputPanel</tt></td><td align="center" valign="top"><tt>200</tt></td><td valign="top">A widget wants to close the software input panel (SIP).</td></tr>
<tr><td valign="top"><tt>QEvent.ContentsRectChange</tt></td><td align="center" valign="top"><tt>178</tt></td><td valign="top">The margins of the widget's content rect changed.</td></tr>
<tr><td valign="top"><tt>QEvent.ContextMenu</tt></td><td align="center" valign="top"><tt>82</tt></td><td valign="top">Context popup menu (<a href="qcontextmenuevent.html">QContextMenuEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.CursorChange</tt></td><td align="center" valign="top"><tt>183</tt></td><td valign="top">The widget's cursor has changed.</td></tr>
<tr><td valign="top"><tt>QEvent.DeferredDelete</tt></td><td align="center" valign="top"><tt>52</tt></td><td valign="top">The object will be deleted after it has cleaned up.</td></tr>
<tr><td valign="top"><tt>QEvent.DragEnter</tt></td><td align="center" valign="top"><tt>60</tt></td><td valign="top">The cursor enters a widget during a drag and drop operation (<a href="qdragenterevent.html">QDragEnterEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.DragLeave</tt></td><td align="center" valign="top"><tt>62</tt></td><td valign="top">The cursor leaves a widget during a drag and drop operation (<a href="qdragleaveevent.html">QDragLeaveEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.DragMove</tt></td><td align="center" valign="top"><tt>61</tt></td><td valign="top">A drag and drop operation is in progress (<a href="qdragmoveevent.html">QDragMoveEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.Drop</tt></td><td align="center" valign="top"><tt>63</tt></td><td valign="top">A drag and drop operation is completed (<a href="qdropevent.html">QDropEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.EnabledChange</tt></td><td align="center" valign="top"><tt>98</tt></td><td valign="top">Widget's enabled state has changed.</td></tr>
<tr><td valign="top"><tt>QEvent.Enter</tt></td><td align="center" valign="top"><tt>10</tt></td><td valign="top">Mouse enters widget's boundaries.</td></tr>
<tr><td valign="top"><tt>QEvent.EnterEditFocus</tt></td><td align="center" valign="top"><tt>150</tt></td><td valign="top">An editor widget gains focus for editing.</td></tr>
<tr><td valign="top"><tt>QEvent.EnterWhatsThisMode</tt></td><td align="center" valign="top"><tt>124</tt></td><td valign="top">Send to toplevel widgets when the application enters "What's This?" mode.</td></tr>
<tr><td valign="top"><tt>QEvent.FileOpen</tt></td><td align="center" valign="top"><tt>116</tt></td><td valign="top">File open request (<a href="qfileopenevent.html">QFileOpenEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.FocusIn</tt></td><td align="center" valign="top"><tt>8</tt></td><td valign="top">Widget gains keyboard focus (<a href="qfocusevent.html">QFocusEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.FocusOut</tt></td><td align="center" valign="top"><tt>9</tt></td><td valign="top">Widget loses keyboard focus (<a href="qfocusevent.html">QFocusEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.FontChange</tt></td><td align="center" valign="top"><tt>97</tt></td><td valign="top">Widget's font has changed.</td></tr>
<tr><td valign="top"><tt>QEvent.GrabKeyboard</tt></td><td align="center" valign="top"><tt>188</tt></td><td valign="top">Item gains keyboard grab (<a href="qgraphicsitem.html">QGraphicsItem</a> only).</td></tr>
<tr><td valign="top"><tt>QEvent.GrabMouse</tt></td><td align="center" valign="top"><tt>186</tt></td><td valign="top">Item gains mouse grab (<a href="qgraphicsitem.html">QGraphicsItem</a> only).</td></tr>
<tr><td valign="top"><tt>QEvent.GraphicsSceneContextMenu</tt></td><td align="center" valign="top"><tt>159</tt></td><td valign="top">Context popup menu over a graphics scene (<a href="qgraphicsscenecontextmenuevent.html">QGraphicsSceneContextMenuEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.GraphicsSceneDragEnter</tt></td><td align="center" valign="top"><tt>164</tt></td><td valign="top">The cursor enters a graphics scene during a drag and drop operation (<a href="qgraphicsscenedragdropevent.html">QGraphicsSceneDragDropEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.GraphicsSceneDragLeave</tt></td><td align="center" valign="top"><tt>166</tt></td><td valign="top">The cursor leaves a graphics scene during a drag and drop operation (<a href="qgraphicsscenedragdropevent.html">QGraphicsSceneDragDropEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.GraphicsSceneDragMove</tt></td><td align="center" valign="top"><tt>165</tt></td><td valign="top">A drag and drop operation is in progress over a scene (<a href="qgraphicsscenedragdropevent.html">QGraphicsSceneDragDropEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.GraphicsSceneDrop</tt></td><td align="center" valign="top"><tt>167</tt></td><td valign="top">A drag and drop operation is completed over a scene (<a href="qgraphicsscenedragdropevent.html">QGraphicsSceneDragDropEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.GraphicsSceneHelp</tt></td><td align="center" valign="top"><tt>163</tt></td><td valign="top">The user requests help for a graphics scene (<a href="qhelpevent.html">QHelpEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.GraphicsSceneHoverEnter</tt></td><td align="center" valign="top"><tt>160</tt></td><td valign="top">The mouse cursor enters a hover item in a graphics scene (<a href="qgraphicsscenehoverevent.html">QGraphicsSceneHoverEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.GraphicsSceneHoverLeave</tt></td><td align="center" valign="top"><tt>162</tt></td><td valign="top">The mouse cursor leaves a hover item in a graphics scene (<a href="qgraphicsscenehoverevent.html">QGraphicsSceneHoverEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.GraphicsSceneHoverMove</tt></td><td align="center" valign="top"><tt>161</tt></td><td valign="top">The mouse cursor moves inside a hover item in a graphics scene (<a href="qgraphicsscenehoverevent.html">QGraphicsSceneHoverEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.GraphicsSceneMouseDoubleClick</tt></td><td align="center" valign="top"><tt>158</tt></td><td valign="top">Mouse press again (double click) in a graphics scene (<a href="qgraphicsscenemouseevent.html">QGraphicsSceneMouseEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.GraphicsSceneMouseMove</tt></td><td align="center" valign="top"><tt>155</tt></td><td valign="top">Move mouse in a graphics scene (<a href="qgraphicsscenemouseevent.html">QGraphicsSceneMouseEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.GraphicsSceneMousePress</tt></td><td align="center" valign="top"><tt>156</tt></td><td valign="top">Mouse press in a graphics scene (<a href="qgraphicsscenemouseevent.html">QGraphicsSceneMouseEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.GraphicsSceneMouseRelease</tt></td><td align="center" valign="top"><tt>157</tt></td><td valign="top">Mouse release in a graphics scene (<a href="qgraphicsscenemouseevent.html">QGraphicsSceneMouseEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.GraphicsSceneMove</tt></td><td align="center" valign="top"><tt>182</tt></td><td valign="top">Widget was moved (<a href="qgraphicsscenemoveevent.html">QGraphicsSceneMoveEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.GraphicsSceneResize</tt></td><td align="center" valign="top"><tt>181</tt></td><td valign="top">Widget was resized (<a href="qgraphicssceneresizeevent.html">QGraphicsSceneResizeEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.GraphicsSceneWheel</tt></td><td align="center" valign="top"><tt>168</tt></td><td valign="top">Mouse wheel rolled in a graphics scene (<a href="qgraphicsscenewheelevent.html">QGraphicsSceneWheelEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.Hide</tt></td><td align="center" valign="top"><tt>18</tt></td><td valign="top">Widget was hidden (<a href="qhideevent.html">QHideEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.HideToParent</tt></td><td align="center" valign="top"><tt>27</tt></td><td valign="top">A child widget has been hidden.</td></tr>
<tr><td valign="top"><tt>QEvent.HoverEnter</tt></td><td align="center" valign="top"><tt>127</tt></td><td valign="top">The mouse cursor enters a hover widget (<a href="qhoverevent.html">QHoverEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.HoverLeave</tt></td><td align="center" valign="top"><tt>128</tt></td><td valign="top">The mouse cursor leaves a hover widget (<a href="qhoverevent.html">QHoverEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.HoverMove</tt></td><td align="center" valign="top"><tt>129</tt></td><td valign="top">The mouse cursor moves inside a hover widget (<a href="qhoverevent.html">QHoverEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.IconDrag</tt></td><td align="center" valign="top"><tt>96</tt></td><td valign="top">The main icon of a window has been dragged away (<a href="qicondragevent.html">QIconDragEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.IconTextChange</tt></td><td align="center" valign="top"><tt>101</tt></td><td valign="top">Widget's icon text has been changed.</td></tr>
<tr><td valign="top"><tt>QEvent.InputMethod</tt></td><td align="center" valign="top"><tt>83</tt></td><td valign="top">An input method is being used (<a href="qinputmethodevent.html">QInputMethodEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.KeyPress</tt></td><td align="center" valign="top"><tt>6</tt></td><td valign="top">Key press (<a href="qkeyevent.html">QKeyEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.KeyRelease</tt></td><td align="center" valign="top"><tt>7</tt></td><td valign="top">Key release (<a href="qkeyevent.html">QKeyEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.LanguageChange</tt></td><td align="center" valign="top"><tt>89</tt></td><td valign="top">The application translation changed.</td></tr>
<tr><td valign="top"><tt>QEvent.LayoutDirectionChange</tt></td><td align="center" valign="top"><tt>90</tt></td><td valign="top">The direction of layouts changed.</td></tr>
<tr><td valign="top"><tt>QEvent.LayoutRequest</tt></td><td align="center" valign="top"><tt>76</tt></td><td valign="top">Widget layout needs to be redone.</td></tr>
<tr><td valign="top"><tt>QEvent.Leave</tt></td><td align="center" valign="top"><tt>11</tt></td><td valign="top">Mouse leaves widget's boundaries.</td></tr>
<tr><td valign="top"><tt>QEvent.LeaveEditFocus</tt></td><td align="center" valign="top"><tt>151</tt></td><td valign="top">An editor widget loses focus for editing.</td></tr>
<tr><td valign="top"><tt>QEvent.LeaveWhatsThisMode</tt></td><td align="center" valign="top"><tt>125</tt></td><td valign="top">Send to toplevel widgets when the application leaves "What's This?" mode.</td></tr>
<tr><td valign="top"><tt>QEvent.LocaleChange</tt></td><td align="center" valign="top"><tt>88</tt></td><td valign="top">The system locale has changed.</td></tr>
<tr><td valign="top"><tt>QEvent.NonClientAreaMouseButtonDblClick</tt></td><td align="center" valign="top"><tt>176</tt></td><td valign="top">A mouse double click occurred outside the client area.</td></tr>
<tr><td valign="top"><tt>QEvent.NonClientAreaMouseButtonPress</tt></td><td align="center" valign="top"><tt>174</tt></td><td valign="top">A mouse button press occurred outside the client area.</td></tr>
<tr><td valign="top"><tt>QEvent.NonClientAreaMouseButtonRelease</tt></td><td align="center" valign="top"><tt>175</tt></td><td valign="top">A mouse button release occurred outside the client area.</td></tr>
<tr><td valign="top"><tt>QEvent.NonClientAreaMouseMove</tt></td><td align="center" valign="top"><tt>173</tt></td><td valign="top">A mouse move occurred outside the client area.</td></tr>
<tr><td valign="top"><tt>QEvent.MacSizeChange</tt></td><td align="center" valign="top"><tt>177</tt></td><td valign="top">The user changed his widget sizes (Mac OS X only).</td></tr>
<tr><td valign="top"><tt>QEvent.MenubarUpdated</tt></td><td align="center" valign="top"><tt>153</tt></td><td valign="top">The window's menu bar has been updated.</td></tr>
<tr><td valign="top"><tt>QEvent.MetaCall</tt></td><td align="center" valign="top"><tt>43</tt></td><td valign="top">An asynchronous method invocation via <a href="qmetaobject.html#invokeMethod">QMetaObject.invokeMethod</a>().</td></tr>
<tr><td valign="top"><tt>QEvent.ModifiedChange</tt></td><td align="center" valign="top"><tt>102</tt></td><td valign="top">Widgets modification state has been changed.</td></tr>
<tr><td valign="top"><tt>QEvent.MouseButtonDblClick</tt></td><td align="center" valign="top"><tt>4</tt></td><td valign="top">Mouse press again (<a href="qmouseevent.html">QMouseEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.MouseButtonPress</tt></td><td align="center" valign="top"><tt>2</tt></td><td valign="top">Mouse press (<a href="qmouseevent.html">QMouseEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.MouseButtonRelease</tt></td><td align="center" valign="top"><tt>3</tt></td><td valign="top">Mouse release (<a href="qmouseevent.html">QMouseEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.MouseMove</tt></td><td align="center" valign="top"><tt>5</tt></td><td valign="top">Mouse move (<a href="qmouseevent.html">QMouseEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.MouseTrackingChange</tt></td><td align="center" valign="top"><tt>109</tt></td><td valign="top">The mouse tracking state has changed.</td></tr>
<tr><td valign="top"><tt>QEvent.Move</tt></td><td align="center" valign="top"><tt>13</tt></td><td valign="top">Widget's position changed (<a href="qmoveevent.html">QMoveEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.Paint</tt></td><td align="center" valign="top"><tt>12</tt></td><td valign="top">Screen update necessary (<a href="qpaintevent.html">QPaintEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.PaletteChange</tt></td><td align="center" valign="top"><tt>39</tt></td><td valign="top">Palette of the widget changed.</td></tr>
<tr><td valign="top"><tt>QEvent.ParentAboutToChange</tt></td><td align="center" valign="top"><tt>131</tt></td><td valign="top">The widget parent is about to change.</td></tr>
<tr><td valign="top"><tt>QEvent.ParentChange</tt></td><td align="center" valign="top"><tt>21</tt></td><td valign="top">The widget parent has changed.</td></tr>
<tr><td valign="top"><tt>QEvent.Polish</tt></td><td align="center" valign="top"><tt>75</tt></td><td valign="top">The widget is polished.</td></tr>
<tr><td valign="top"><tt>QEvent.PolishRequest</tt></td><td align="center" valign="top"><tt>74</tt></td><td valign="top">The widget should be polished.</td></tr>
<tr><td valign="top"><tt>QEvent.QueryWhatsThis</tt></td><td align="center" valign="top"><tt>123</tt></td><td valign="top">The widget should accept the event if it has "What's This?" help.</td></tr>
<tr><td valign="top"><tt>QEvent.RequestSoftwareInputPanel</tt></td><td align="center" valign="top"><tt>199</tt></td><td valign="top">A widget wants to open a software input panel (SIP).</td></tr>
<tr><td valign="top"><tt>QEvent.Resize</tt></td><td align="center" valign="top"><tt>14</tt></td><td valign="top">Widget's size changed (<a href="qresizeevent.html">QResizeEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.Shortcut</tt></td><td align="center" valign="top"><tt>117</tt></td><td valign="top">Key press in child for shortcut key handling (<a href="qshortcutevent.html">QShortcutEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.ShortcutOverride</tt></td><td align="center" valign="top"><tt>51</tt></td><td valign="top">Key press in child, for overriding shortcut key handling (<a href="qkeyevent.html">QKeyEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.Show</tt></td><td align="center" valign="top"><tt>17</tt></td><td valign="top">Widget was shown on screen (<a href="qshowevent.html">QShowEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.ShowToParent</tt></td><td align="center" valign="top"><tt>26</tt></td><td valign="top">A child widget has been shown.</td></tr>
<tr><td valign="top"><tt>QEvent.SockAct</tt></td><td align="center" valign="top"><tt>50</tt></td><td valign="top">Socket activated, used to implement <a href="qsocketnotifier.html">QSocketNotifier</a>.</td></tr>
<tr><td valign="top"><tt>QEvent.StateMachineSignal</tt></td><td align="center" valign="top"><tt>192</tt></td><td valign="top">A signal delivered to a state machine (<a href="qstatemachine-signalevent.html">QStateMachine.SignalEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.StateMachineWrapped</tt></td><td align="center" valign="top"><tt>193</tt></td><td valign="top">The event is a wrapper for, i.e., contains, another event (<a href="qstatemachine-wrappedevent.html">QStateMachine.WrappedEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.StatusTip</tt></td><td align="center" valign="top"><tt>112</tt></td><td valign="top">A status tip is requested (<a href="qstatustipevent.html">QStatusTipEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.StyleChange</tt></td><td align="center" valign="top"><tt>100</tt></td><td valign="top">Widget's style has been changed.</td></tr>
<tr><td valign="top"><tt>QEvent.TabletMove</tt></td><td align="center" valign="top"><tt>87</tt></td><td valign="top">Wacom tablet move (<a href="qtabletevent.html">QTabletEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.TabletPress</tt></td><td align="center" valign="top"><tt>92</tt></td><td valign="top">Wacom tablet press (<a href="qtabletevent.html">QTabletEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.TabletRelease</tt></td><td align="center" valign="top"><tt>93</tt></td><td valign="top">Wacom tablet release (<a href="qtabletevent.html">QTabletEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.OkRequest</tt></td><td align="center" valign="top"><tt>94</tt></td><td valign="top">Ok button in decoration pressed. Supported only for Windows CE.</td></tr>
<tr><td valign="top"><tt>QEvent.TabletEnterProximity</tt></td><td align="center" valign="top"><tt>171</tt></td><td valign="top">Wacom tablet enter proximity event (<a href="qtabletevent.html">QTabletEvent</a>), sent to <a href="qapplication.html">QApplication</a>.</td></tr>
<tr><td valign="top"><tt>QEvent.TabletLeaveProximity</tt></td><td align="center" valign="top"><tt>172</tt></td><td valign="top">Wacom tablet leave proximity event (<a href="qtabletevent.html">QTabletEvent</a>), sent to <a href="qapplication.html">QApplication</a>.</td></tr>
<tr><td valign="top"><tt>QEvent.Timer</tt></td><td align="center" valign="top"><tt>1</tt></td><td valign="top">Regular timer events (<a href="qtimerevent.html">QTimerEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.ToolBarChange</tt></td><td align="center" valign="top"><tt>120</tt></td><td valign="top">The toolbar button is toggled on Mac OS X.</td></tr>
<tr><td valign="top"><tt>QEvent.ToolTip</tt></td><td align="center" valign="top"><tt>110</tt></td><td valign="top">A tooltip was requested (<a href="qhelpevent.html">QHelpEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.ToolTipChange</tt></td><td align="center" valign="top"><tt>184</tt></td><td valign="top">The widget's tooltip has changed.</td></tr>
<tr><td valign="top"><tt>QEvent.UngrabKeyboard</tt></td><td align="center" valign="top"><tt>189</tt></td><td valign="top">Item loses keyboard grab (<a href="qgraphicsitem.html">QGraphicsItem</a> only).</td></tr>
<tr><td valign="top"><tt>QEvent.UngrabMouse</tt></td><td align="center" valign="top"><tt>187</tt></td><td valign="top">Item loses mouse grab (<a href="qgraphicsitem.html">QGraphicsItem</a> only).</td></tr>
<tr><td valign="top"><tt>QEvent.UpdateLater</tt></td><td align="center" valign="top"><tt>78</tt></td><td valign="top">The widget should be queued to be repainted at a later time.</td></tr>
<tr><td valign="top"><tt>QEvent.UpdateRequest</tt></td><td align="center" valign="top"><tt>77</tt></td><td valign="top">The widget should be repainted.</td></tr>
<tr><td valign="top"><tt>QEvent.WhatsThis</tt></td><td align="center" valign="top"><tt>111</tt></td><td valign="top">The widget should reveal "What's This?" help (<a href="qhelpevent.html">QHelpEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.WhatsThisClicked</tt></td><td align="center" valign="top"><tt>118</tt></td><td valign="top">A link in a widget's "What's This?" help was clicked.</td></tr>
<tr><td valign="top"><tt>QEvent.Wheel</tt></td><td align="center" valign="top"><tt>31</tt></td><td valign="top">Mouse wheel rolled (<a href="qwheelevent.html">QWheelEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.WinEventAct</tt></td><td align="center" valign="top"><tt>132</tt></td><td valign="top">A Windows-specific activation event has occurred.</td></tr>
<tr><td valign="top"><tt>QEvent.WindowActivate</tt></td><td align="center" valign="top"><tt>24</tt></td><td valign="top">Window was activated.</td></tr>
<tr><td valign="top"><tt>QEvent.WindowBlocked</tt></td><td align="center" valign="top"><tt>103</tt></td><td valign="top">The window is blocked by a modal dialog.</td></tr>
<tr><td valign="top"><tt>QEvent.WindowDeactivate</tt></td><td align="center" valign="top"><tt>25</tt></td><td valign="top">Window was deactivated.</td></tr>
<tr><td valign="top"><tt>QEvent.WindowIconChange</tt></td><td align="center" valign="top"><tt>34</tt></td><td valign="top">The window's icon has changed.</td></tr>
<tr><td valign="top"><tt>QEvent.WindowStateChange</tt></td><td align="center" valign="top"><tt>105</tt></td><td valign="top">The <a href="qwidget.html#windowState">window's state</a> (minimized, maximized or full-screen) has changed (<a href="qwindowstatechangeevent.html">QWindowStateChangeEvent</a>).</td></tr>
<tr><td valign="top"><tt>QEvent.WindowTitleChange</tt></td><td align="center" valign="top"><tt>33</tt></td><td valign="top">The window title has changed.</td></tr>
<tr><td valign="top"><tt>QEvent.WindowUnblocked</tt></td><td align="center" valign="top"><tt>104</tt></td><td valign="top">The window is unblocked after a modal dialog exited.</td></tr>
<tr><td valign="top"><tt>QEvent.ZOrderChange</tt></td><td align="center" valign="top"><tt>126</tt></td><td valign="top">The widget's z-order has changed. This event is never sent to top level windows.</td></tr>
<tr><td valign="top"><tt>QEvent.KeyboardLayoutChange</tt></td><td align="center" valign="top"><tt>169</tt></td><td valign="top">The keyboard layout has changed.</td></tr>
<tr><td valign="top"><tt>QEvent.DynamicPropertyChange</tt></td><td align="center" valign="top"><tt>170</tt></td><td valign="top">A dynamic property was added, changed or removed from the object.</td></tr>
<tr><td valign="top"><tt>QEvent.TouchBegin</tt></td><td align="center" valign="top"><tt>194</tt></td><td valign="top">Beginning of a sequence of touch-screen and/or track-pad events (<a href="qtouchevent.html">QTouchEvent</a>)</td></tr>
<tr><td valign="top"><tt>QEvent.TouchUpdate</tt></td><td align="center" valign="top"><tt>195</tt></td><td valign="top">Touch-screen event (<a href="qtouchevent.html">QTouchEvent</a>)</td></tr>
<tr><td valign="top"><tt>QEvent.TouchEnd</tt></td><td align="center" valign="top"><tt>196</tt></td><td valign="top">End of touch-event sequence (<a href="qtouchevent.html">QTouchEvent</a>)</td></tr>
<tr><td valign="top"><tt>QEvent.WinIdChange</tt></td><td align="center" valign="top"><tt>203</tt></td><td valign="top">The window system identifer for this native widget has changed</td></tr>
<tr><td valign="top"><tt>QEvent.Gesture</tt></td><td align="center" valign="top"><tt>198</tt></td><td valign="top">A gesture was triggered (<a href="qgestureevent.html">QGestureEvent</a>)</td></tr>
<tr><td valign="top"><tt>QEvent.GestureOverride</tt></td><td align="center" valign="top"><tt>202</tt></td><td valign="top">A gesture override was triggered (<a href="qgestureevent.html">QGestureEvent</a>)</td></tr>
</table></p>
<p>User events should have values between <tt>User</tt> and <tt>MaxUser</tt>:</p>
<p><table border="1" cellpadding="2" cellspacing="1" class="valuelist" width="100%">
<tr><th width="25%">Constant</th><th width="15%">Value</th><th width="60%">Description</th></tr>
<tr><td valign="top"><tt>QEvent.User</tt></td><td align="center" valign="top"><tt>1000</tt></td><td valign="top">User-defined event.</td></tr>
<tr><td valign="top"><tt>QEvent.MaxUser</tt></td><td align="center" valign="top"><tt>65535</tt></td><td valign="top">Last user event ID.</td></tr>
</table></p>
<p>For convenience, you can use the <a href="qevent.html#registerEventType">registerEventType</a>() function to register and reserve a custom event type for your application. Doing so will allow you to avoid accidentally re-using a custom event type already in use elsewhere in your application.</p>
<hr /><h2>Method Documentation</h2><h3 class="fn"><a name="QEvent" />QEvent.__init__ (<i>self</i>, <a href="qevent.html#Type-enum">Type</a>)</h3><p>Contructs an event object of type <i>type</i>.</p>
<a name="//apple_ref/cpp/instm/QEvent/~QEvent" />
<h3 class="fn"><a name="QEvent-2" />QEvent.__init__ (<i>self</i>, <a href="qevent.html">QEvent</a>)</h3><h3 class="fn"><a name="accept" />QEvent.accept (<i>self</i>)</h3><p>Sets the accept flag of the event object, the equivalent of calling setAccepted(true).</p>
<p>Setting the accept parameter indicates that the event receiver wants the event. Unwanted events might be propagated to the parent widget.</p>
<p>See also <a href="qevent.html#ignore">ignore</a>().</p>
<a name="//apple_ref/cpp/instm/QEvent/ignore" />
<h3 class="fn"><a name="ignore" />QEvent.ignore (<i>self</i>)</h3><p>Clears the accept flag parameter of the event object, the equivalent of calling setAccepted(false).</p>
<p>Clearing the accept parameter indicates that the event receiver does not want the event. Unwanted events might be propgated to the parent widget.</p>
<p>See also <a href="qevent.html#accept">accept</a>().</p>
<a name="//apple_ref/cpp/clm/QEvent/registerEventType" />
<h3 class="fn"><a name="isAccepted" />bool QEvent.isAccepted (<i>self</i>)</h3><h3 class="fn"><a name="registerEventType" />int QEvent.registerEventType (int <i>hint</i> = -1)</h3><p>Registers and returns a custom event type. The <i>hint</i> provided will be used if it is available, otherwise it will return a value between <a href="qevent.html#Type-enum">QEvent.User</a> and <a href="qevent.html#Type-enum">QEvent.MaxUser</a> that has not yet been registered. The <i>hint</i> is ignored if its value is not between <a href="qevent.html#Type-enum">QEvent.User</a> and <a href="qevent.html#Type-enum">QEvent.MaxUser</a>.</p>
<p><b>Note:</b> This function is <a href="threads-reentrancy.html#thread-safe">thread-safe</a>.</p>
<p>This function was introduced in Qt 4.4.</p>
<a name="//apple_ref/cpp/instm/QEvent/spontaneous" />
<h3 class="fn"><a name="setAccepted" />QEvent.setAccepted (<i>self</i>, bool)</h3><h3 class="fn"><a name="spontaneous" />bool QEvent.spontaneous (<i>self</i>)</h3><p>Returns true if the event originated outside the application (a system event); otherwise returns false.</p>
<p>The return value of this function is not defined for paint events.</p>
<a name="//apple_ref/cpp/instm/QEvent/type" />
<h3 class="fn"><a name="type" /><a href="qevent.html#Type-enum">Type</a> QEvent.type (<i>self</i>)</h3><p>Returns the event type.</p>
<p /><address><hr /><div align="center"><table border="0" cellspacing="0" width="100%"><tr class="address"><td align="left" width="25%">PyQt 4.7.3 for X11</td><td align="center" width="50%">Copyright © <a href="http://www.riverbankcomputing.com">Riverbank Computing Ltd</a> and <a href="http://www.qtsoftware.com">Nokia</a> 2010</td><td align="right" width="25%">Qt 4.6.2</td></tr></table></div></address></body></html>
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