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| 6 | <title>QFocusEvent Class</title>
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| 32 | <td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>QFocusEvent Class Reference</h1>
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| 33 |
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| 34 | <p>The QFocusEvent class contains event parameters for widget focus
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| 35 | events.
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| 36 | <a href="#details">More...</a>
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| 37 | <p><tt>#include <<a href="qevent-h.html">qevent.h</a>></tt>
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| 38 | <p>Inherits <a href="qevent.html">QEvent</a>.
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| 39 | <p><a href="qfocusevent-members.html">List of all member functions.</a>
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| 40 | <h2>Public Members</h2>
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| 41 | <ul>
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| 42 | <li class=fn><a href="#QFocusEvent"><b>QFocusEvent</b></a> ( Type type )</li>
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| 43 | <li class=fn>bool <a href="#gotFocus"><b>gotFocus</b></a> () const</li>
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| 44 | <li class=fn>bool <a href="#lostFocus"><b>lostFocus</b></a> () const</li>
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| 45 | <li class=fn>enum <a href="#Reason-enum"><b>Reason</b></a> { Mouse, Tab, Backtab, ActiveWindow, Popup, Shortcut, Other }</li>
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| 46 | </ul>
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| 47 | <h2>Static Public Members</h2>
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| 48 | <ul>
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| 49 | <li class=fn>Reason <a href="#reason"><b>reason</b></a> ()</li>
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| 50 | <li class=fn>void <a href="#setReason"><b>setReason</b></a> ( Reason reason )</li>
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| 51 | <li class=fn>void <a href="#resetReason"><b>resetReason</b></a> ()</li>
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| 52 | </ul>
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| 53 | <hr><a name="details"></a><h2>Detailed Description</h2>
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| 54 |
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| 55 |
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| 56 | The QFocusEvent class contains event parameters for widget focus
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| 57 | events.
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| 58 | <p>
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| 59 | <p> Focus events are sent to widgets when the keyboard input focus
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| 60 | changes. Focus events occur due to mouse actions, keypresses (e.g.
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| 61 | Tab or Backtab), the window system, popup menus, keyboard
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| 62 | shortcuts or other application specific reasons. The reason for a
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| 63 | particular focus event is returned by <a href="#reason">reason</a>() in the appropriate
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| 64 | event handler.
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| 65 | <p> The event handlers <a href="qwidget.html#focusInEvent">QWidget::focusInEvent</a>() and
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| 66 | <a href="qwidget.html#focusOutEvent">QWidget::focusOutEvent</a>() receive focus events.
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| 67 | <p> Use <a href="#setReason">setReason</a>() to set the reason for all focus events, and
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| 68 | <a href="#resetReason">resetReason</a>() to set the reason for all focus events to the reason
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| 69 | in force before the last setReason() call.
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| 70 | <p> <p>See also <a href="qwidget.html#setFocus">QWidget::setFocus</a>(), <a href="qwidget.html#focusPolicy-prop">QWidget::focusPolicy</a>, and <a href="events.html">Event Classes</a>.
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| 71 |
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| 72 | <hr><h2>Member Type Documentation</h2>
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| 73 | <h3 class=fn><a name="Reason-enum"></a>QFocusEvent::Reason</h3>
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| 74 |
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| 75 | <p> This enum specifies why the focus changed.
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| 76 | <ul>
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| 77 | <li><tt>QFocusEvent::Mouse</tt> - because of a mouse action.
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| 78 | <li><tt>QFocusEvent::Tab</tt> - because of a Tab press.
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| 79 | <li><tt>QFocusEvent::Backtab</tt> - because of a Backtab press
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| 80 | (possibly including Shift/Control, e.g. Shift+Tab).
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| 81 | <li><tt>QFocusEvent::ActiveWindow</tt> - because the window system made this window (in)active.
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| 82 | <li><tt>QFocusEvent::Popup</tt> - because the application opened/closed a popup that grabbed/released focus.
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| 83 | <li><tt>QFocusEvent::Shortcut</tt> - because of a keyboard shortcut.
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| 84 | <li><tt>QFocusEvent::Other</tt> - any other reason, usually application-specific.
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| 85 | </ul><p> See the <a href="focus.html">keyboard focus overview</a> for more
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| 86 | about focus.
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| 87 |
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| 88 | <hr><h2>Member Function Documentation</h2>
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| 89 | <h3 class=fn><a name="QFocusEvent"></a>QFocusEvent::QFocusEvent ( <a href="qevent.html#Type-enum">Type</a> type )
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| 90 | </h3>
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| 91 |
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| 92 | <p> Constructs a focus event object.
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| 93 | <p> The <em>type</em> parameter must be either <a href="qevent.html#Type-enum">QEvent::FocusIn</a> or <a href="qevent.html#Type-enum">QEvent::FocusOut</a>.
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| 94 |
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| 95 | <h3 class=fn>bool <a name="gotFocus"></a>QFocusEvent::gotFocus () const
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| 96 | </h3>
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| 97 |
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| 98 | <p> Returns TRUE if the widget received the text input focus;
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| 99 | otherwise returns FALSE.
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| 100 |
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| 101 | <h3 class=fn>bool <a name="lostFocus"></a>QFocusEvent::lostFocus () const
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| 102 | </h3>
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| 103 |
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| 104 | <p> Returns TRUE if the widget lost the text input focus; otherwise
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| 105 | returns FALSE.
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| 106 |
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| 107 | <h3 class=fn><a href="qfocusevent.html#Reason-enum">Reason</a> <a name="reason"></a>QFocusEvent::reason ()<tt> [static]</tt>
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| 108 | </h3>
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| 109 | Returns the reason for this focus event.
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| 110 | <p> <p>See also <a href="#setReason">setReason</a>().
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| 111 |
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| 112 | <h3 class=fn>void <a name="resetReason"></a>QFocusEvent::resetReason ()<tt> [static]</tt>
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| 113 | </h3>
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| 114 | Resets the reason for all future focus events to the value before
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| 115 | the last <a href="#setReason">setReason</a>() call.
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| 116 | <p> <p>See also <a href="#reason">reason</a>() and <a href="#setReason">setReason</a>().
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| 117 |
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| 118 | <h3 class=fn>void <a name="setReason"></a>QFocusEvent::setReason ( <a href="qfocusevent.html#Reason-enum">Reason</a> reason )<tt> [static]</tt>
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| 119 | </h3>
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| 120 | Sets the reason for all future focus events to <em>reason</em>.
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| 121 | <p> <p>See also <a href="#reason">reason</a>() and <a href="#resetReason">resetReason</a>().
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| 122 |
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| 123 | <!-- eof -->
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| 125 | This file is part of the <a href="index.html">Qt toolkit</a>.
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| 126 | Copyright © 1995-2007
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| 131 | <td align=right><div align=right>Qt 3.3.8</div>
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