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<title>Qt 4.0: QDragMoveEvent Class Reference</title>
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<td align="right" valign="top" width="230"><img src="images/trolltech-logo.png" align="right" width="203" height="32" border="0" /></td></tr></table><h1 align="center">QDragMoveEvent Class Reference</h1>
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<p>The QDragMoveEvent class provides an event which is sent while a drag and drop action is in progress. <a href="#details">More...</a></p>
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<pre>#include <QDragMoveEvent></pre><p>Part of the <a href="qtgui.html">QtGui</a> module.</p>
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<p>Inherits <a href="qdropevent.html">QDropEvent</a>.</p>
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<p>Inherited by <a href="qdragenterevent.html">QDragEnterEvent</a>.</p>
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<li><a href="qdragmoveevent-members.html">List of all members, including inherited members</a></li>
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<li><a href="qdragmoveevent-qt3.html">Qt 3 support members</a></li>
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<a name="public-functions"></a>
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<h3>Public Functions</h3>
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<li><div class="fn"/><b><a href="qdragmoveevent.html#QDragMoveEvent">QDragMoveEvent</a></b> ( const QPoint & <i>pos</i>, Qt::DropActions <i>actions</i>, const QMimeData * <i>data</i>, Qt::MouseButtons <i>buttons</i>, Qt::KeyboardModifiers <i>modifiers</i>, Type <i>type</i> = DragMove )</li>
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<li><div class="fn"/><b><a href="qdragmoveevent.html#dtor.QDragMoveEvent">~QDragMoveEvent</a></b> ()</li>
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<li><div class="fn"/>void <b><a href="qdragmoveevent.html#accept">accept</a></b> ( const QRect & <i>rectangle</i> )</li>
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<li><div class="fn"/>void <b><a href="qdragmoveevent.html#accept-3">accept</a></b> ()</li>
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<li><div class="fn"/>QRect <b><a href="qdragmoveevent.html#answerRect">answerRect</a></b> () const</li>
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<li><div class="fn"/>void <b><a href="qdragmoveevent.html#ignore">ignore</a></b> ( const QRect & <i>rectangle</i> )</li>
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<li><div class="fn"/>void <b><a href="qdragmoveevent.html#ignore-2">ignore</a></b> ()</li>
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<li><div class="fn"/>10 public functions inherited from <a href="qdropevent.html#public-functions">QDropEvent</a></li>
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<li><div class="fn"/>6 public functions inherited from <a href="qevent.html#public-functions">QEvent</a></li>
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<h3>Additional Inherited Members</h3>
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<li><div class="fn"/>1 property inherited from <a href="qevent.html#properties">QEvent</a></li>
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<a name="details"></a>
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<h2>Detailed Description</h2>
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<p>The QDragMoveEvent class provides an event which is sent while a drag and drop action is in progress.</p>
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<p>When a widget <a href="qwidget.html#acceptDrops-prop">accepts drop events</a>, it will receive this event repeatedly while the drag is within the widget's boundaries. The widget should examine the event to see what kind of data it <a href="qdropevent-qt3.html#provides">provides</a>, and call the <a href="qdragmoveevent.html#accept">accept</a>() function to accept the drop if appropriate.</p>
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<p>The rectangle supplied by the <a href="qdragmoveevent.html#answerRect">answerRect</a>() function can be used to restrict drops to certain parts of the widget. For example, we can check whether the rectangle intersects with the geometry of a certain child widget and only call <a href="qdropevent.html#acceptProposedAction">acceptProposedAction()</a> if that is the case.</p>
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<p>Note that this class inherits most of its functionality from <a href="qdropevent.html">QDropEvent</a>.</p>
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<p>See also <a href="qdragenterevent.html">QDragEnterEvent</a>, <a href="qdragleaveevent.html">QDragLeaveEvent</a>, and <a href="qdropevent.html">QDropEvent</a>.</p>
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<h2>Member Function Documentation</h2>
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<h3 class="fn"><a name="QDragMoveEvent"></a>QDragMoveEvent::QDragMoveEvent ( const <a href="qpoint.html">QPoint</a> & <i>pos</i>, <a href="qt.html#DropAction-enum">Qt::DropActions</a> <i>actions</i>, const <a href="qmimedata.html">QMimeData</a> * <i>data</i>, <a href="qt.html#MouseButton-enum">Qt::MouseButtons</a> <i>buttons</i>, <a href="qt.html#KeyboardModifier-enum">Qt::KeyboardModifiers</a> <i>modifiers</i>, <a href="qevent.html#Type-enum">Type</a> <i>type</i> = DragMove )</h3>
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<p>Creates a <a href="qdragmoveevent.html">QDragMoveEvent</a> of the required <i>type</i> indicating that the mouse is at position <i>pos</i> given within a widget.</p>
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<p>The mouse and keyboard states are specified by <i>buttons</i> and <i>modifiers</i>, and the <i>actions</i> describe the types of drag and drop operation that are possible. The drag data is passed as MIME-encoded information in <i>data</i>.</p>
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<p><b>Warning:</b> Do not attempt to create a <a href="qdragmoveevent.html">QDragMoveEvent</a> yourself. These objects rely on Qt's internal state.</p>
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<h3 class="fn"><a name="dtor.QDragMoveEvent"></a>QDragMoveEvent::~QDragMoveEvent ()</h3>
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<p>Destroys the event.</p>
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<h3 class="fn"><a name="accept"></a>void QDragMoveEvent::accept ( const <a href="qrect.html">QRect</a> & <i>rectangle</i> )</h3>
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<p>The same as accept(), but also notifies that future moves will also be acceptable if they remain within the <i>rectangle</i> given on the widget. This can improve performance, but may also be ignored by the underlying system.</p>
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<p>If the rectangle is empty, drag move events will be sent continuously. This is useful if the source is scrolling in a timer event.</p>
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<h3 class="fn"><a name="accept-3"></a>void QDragMoveEvent::accept ()</h3>
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<p>This is an overloaded member function, provided for convenience. It behaves essentially like the above function.</p>
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<p>Calls <a href="qdropevent.html#accept">QDropEvent::accept</a>().</p>
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<h3 class="fn"><a name="answerRect"></a><a href="qrect.html">QRect</a> QDragMoveEvent::answerRect () const</h3>
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<p>Returns the rectangle in the widget where the drop will occur if accepted. You can use this information to restrict drops to certain places on the widget.</p>
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<h3 class="fn"><a name="ignore"></a>void QDragMoveEvent::ignore ( const <a href="qrect.html">QRect</a> & <i>rectangle</i> )</h3>
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<p>The opposite of the accept(const <a href="qrect.html">QRect</a>&) function. Moves within the <i>rectangle</i> are not acceptable, and will be ignored.</p>
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<h3 class="fn"><a name="ignore-2"></a>void QDragMoveEvent::ignore ()</h3>
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<p>This is an overloaded member function, provided for convenience. It behaves essentially like the above function.</p>
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<p>Calls <a href="qevent.html#ignore">QDropEvent::ignore</a>().</p>
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