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106 lines
5.0 KiB
106 lines
5.0 KiB
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<title>TQDragMoveEvent Class</title>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQDragMoveEvent Class Reference</h1>
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<p>The TQDragMoveEvent class provides an event which is sent while a drag and drop is in progress.
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<a href="#details">More...</a>
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<p><tt>#include <<a href="qevent-h.html">ntqevent.h</a>></tt>
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<p>Inherits <a href="qdropevent.html">TQDropEvent</a>.
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<p>Inherited by <a href="qdragenterevent.html">TQDragEnterEvent</a>.
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<p><a href="qdragmoveevent-members.html">List of all member functions.</a>
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<h2>Public Members</h2>
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<ul>
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<li class=fn><a href="#TQDragMoveEvent"><b>TQDragMoveEvent</b></a> ( const TQPoint & pos, Type type = DragMove )</li>
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<li class=fn>TQRect <a href="#answerRect"><b>answerRect</b></a> () const</li>
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<li class=fn>void <a href="#accept"><b>accept</b></a> ( const TQRect & r )</li>
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<li class=fn>void <a href="#ignore"><b>ignore</b></a> ( const TQRect & r )</li>
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</ul>
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<hr><a name="details"></a><h2>Detailed Description</h2>
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The TQDragMoveEvent class provides an event which is sent while a drag and drop is in progress.
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<p> When a widget <a href="ntqwidget.html#setAcceptDrops">accepts drop
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events</a>, it will receive this event repeatedly while the
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drag is within the widget's boundaries. The widget should examine
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the event to see what data it <a href="qdropevent.html#provides">provides</a>, and <a href="#accept">accept</a>() the drop if appropriate.
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<p> Note that this class inherits most of its functionality from
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<a href="qdropevent.html">TQDropEvent</a>.
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<p>See also <a href="draganddrop.html">Drag And Drop Classes</a> and <a href="events.html">Event Classes</a>.
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<hr><h2>Member Function Documentation</h2>
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<h3 class=fn><a name="TQDragMoveEvent"></a>TQDragMoveEvent::TQDragMoveEvent ( const <a href="ntqpoint.html">TQPoint</a> & pos, <a href="ntqevent.html#Type-enum">Type</a> type = DragMove )
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</h3>
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<p> Creates a TQDragMoveEvent for which the mouse is at point <em>pos</em>,
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and the event is of type <em>type</em>.
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<p> <b>Warning:</b> Do not create a TQDragMoveEvent yourself since these
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objects rely on TQt's internal state.
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<h3 class=fn>void <a name="accept"></a>TQDragMoveEvent::accept ( const <a href="ntqrect.html">TQRect</a> & r )
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</h3>
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<p> The same as <a href="#accept">accept</a>(), but also notifies that future moves will
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also be acceptable if they remain within the rectangle <em>r</em> on the
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widget: this can improve performance, but may also be ignored by
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the underlying system.
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<p> If the rectangle is <a href="ntqrect.html#isEmpty">empty</a>, then
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drag move events will be sent continuously. This is useful if the
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source is scrolling in a timer event.
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<p>Examples: <a href="desktop-example.html#x1727">desktop/desktop.cpp</a> and <a href="dirview-example.html#x1668">dirview/dirview.cpp</a>.
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<h3 class=fn><a href="ntqrect.html">TQRect</a> <a name="answerRect"></a>TQDragMoveEvent::answerRect () const
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</h3>
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<p> Returns the rectangle for which the acceptance of the move event
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applies.
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<h3 class=fn>void <a name="ignore"></a>TQDragMoveEvent::ignore ( const <a href="ntqrect.html">TQRect</a> & r )
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</h3>
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<p> The opposite of <a href="#accept">accept</a>(const <a href="ntqrect.html">TQRect</a>&), i.e. says that moves within
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rectangle <em>r</em> are not acceptable (will be ignored).
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<p>Example: <a href="dirview-example.html#x1669">dirview/dirview.cpp</a>.
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