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authorMichele Calgaro <michele.calgaro@yahoo.it>2024-07-24 21:06:28 +0900
committerMichele Calgaro <michele.calgaro@yahoo.it>2024-07-28 18:25:42 +0900
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downloadtqt3-8ef4ea451dd81dd66b34ed31aaa631f6df24a192.tar.gz
tqt3-8ef4ea451dd81dd66b34ed31aaa631f6df24a192.zip
Rename environment class nt* related files to equivalent tq*
Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
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+<title>TQDesktopWidget 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>TQDesktopWidget Class Reference</h1>
+
+<p>The TQDesktopWidget class provides access to screen information on multi-head systems.
+<a href="#details">More...</a>
+<p><tt>#include &lt;<a href="tqdesktopwidget-h.html">tqdesktopwidget.h</a>&gt;</tt>
+<p>Inherits <a href="tqwidget.html">TQWidget</a>.
+<p><a href="tqdesktopwidget-members.html">List of all member functions.</a>
+<h2>Public Members</h2>
+<ul>
+<li class=fn><a href="#TQDesktopWidget"><b>TQDesktopWidget</b></a> ()</li>
+<li class=fn><a href="#~TQDesktopWidget"><b>~TQDesktopWidget</b></a> ()</li>
+<li class=fn>bool <a href="#isVirtualDesktop"><b>isVirtualDesktop</b></a> () const</li>
+<li class=fn>int <a href="#numScreens"><b>numScreens</b></a> () const</li>
+<li class=fn>int <a href="#primaryScreen"><b>primaryScreen</b></a> () const</li>
+<li class=fn>int <a href="#screenNumber"><b>screenNumber</b></a> ( TQWidget&nbsp;*&nbsp;widget = 0 ) const</li>
+<li class=fn>int <a href="#screenNumber-2"><b>screenNumber</b></a> ( const&nbsp;TQPoint&nbsp;&amp;&nbsp;point ) const</li>
+<li class=fn>TQWidget * <a href="#screen"><b>screen</b></a> ( int&nbsp;screen = -1 )</li>
+<li class=fn>const TQRect &amp; <a href="#screenGeometry"><b>screenGeometry</b></a> ( int&nbsp;screen = -1 ) const</li>
+<li class=fn>const TQRect &amp; <a href="#screenGeometry-2"><b>screenGeometry</b></a> ( TQWidget&nbsp;*&nbsp;widget ) const</li>
+<li class=fn>const TQRect &amp; <a href="#screenGeometry-3"><b>screenGeometry</b></a> ( const&nbsp;TQPoint&nbsp;&amp;&nbsp;p ) const</li>
+<li class=fn>const TQRect &amp; <a href="#availableGeometry"><b>availableGeometry</b></a> ( int&nbsp;screen = -1 ) const</li>
+<li class=fn>const TQRect &amp; <a href="#availableGeometry-2"><b>availableGeometry</b></a> ( TQWidget&nbsp;*&nbsp;widget ) const</li>
+<li class=fn>const TQRect &amp; <a href="#availableGeometry-3"><b>availableGeometry</b></a> ( const&nbsp;TQPoint&nbsp;&amp;&nbsp;p ) const</li>
+</ul>
+<h2>Signals</h2>
+<ul>
+<li class=fn>void <a href="#resized"><b>resized</b></a> ( int&nbsp;screen )</li>
+</ul>
+<hr><a name="details"></a><h2>Detailed Description</h2>
+
+
+The TQDesktopWidget class provides access to screen information on multi-head systems.
+<p>
+
+<p> Systems with more than one graphics card and monitor can manage the
+physical screen space available either as multiple desktops, or as a
+large virtual desktop, which usually has the size of the bounding
+rectangle of all the screens (see <a href="#isVirtualDesktop">isVirtualDesktop</a>()). For an
+application, one of the available screens is the primary screen, i.e.
+the screen where the main widget resides (see <a href="#primaryScreen">primaryScreen</a>()). All
+windows opened in the context of the application must be
+constrained to the boundaries of the primary screen; for example,
+it would be inconvenient if a dialog box popped up on a different
+screen, or split over two screens.
+<p> The TQDesktopWidget provides information about the geometry of the
+available screens with <a href="#screenGeometry">screenGeometry</a>(). The number of screens
+available is returned by <a href="#numScreens">numScreens</a>(). The screen number that a
+particular point or widget is located in is returned by
+<a href="#screenNumber">screenNumber</a>().
+<p> Widgets provided by TQt use this class, for example, to place
+tooltips, menus and dialog boxes according to the parent or
+application widget.
+<p> Applications can use this class to save window positions, or to place
+child widgets on one screen.
+<p> <center><img src="tqdesktopwidget.png" alt="Managing Multiple Screens"></center>
+<p> In the illustration above, Application One's primary screen is
+screen 0, and App Two's primary screen is screen 1.
+<p> <p>See also <a href="advanced.html">Advanced Widgets</a> and <a href="environment.html">Environment Classes</a>.
+
+<hr><h2>Member Function Documentation</h2>
+<h3 class=fn><a name="TQDesktopWidget"></a>TQDesktopWidget::TQDesktopWidget ()
+</h3>
+Creates the desktop widget.
+<p> If the system supports a virtual desktop, this widget will have
+the size of the virtual desktop; otherwise this widget will have
+the size of the primary screen.
+<p> Instead of using TQDesktopWidget directly, use
+<a href="ntqapplication.html#desktop">TQApplication::desktop</a>().
+
+<h3 class=fn><a name="~TQDesktopWidget"></a>TQDesktopWidget::~TQDesktopWidget ()
+</h3>
+Destroy the object and free allocated resources.
+
+<h3 class=fn>const&nbsp;<a href="tqrect.html">TQRect</a>&nbsp;&amp; <a name="availableGeometry"></a>TQDesktopWidget::availableGeometry ( int&nbsp;screen = -1 ) const
+</h3>
+Returns the available geometry of the screen with index <em>screen</em>. What
+is available will be subrect of <a href="#screenGeometry">screenGeometry</a>() based on what the
+platform decides is available (for example excludes the Dock and Menubar
+on Mac OS X, or the taskbar on Windows).
+<p> <p>See also <a href="#screenNumber">screenNumber</a>() and <a href="#screenGeometry">screenGeometry</a>().
+
+<h3 class=fn>const&nbsp;<a href="tqrect.html">TQRect</a>&nbsp;&amp; <a name="availableGeometry-2"></a>TQDesktopWidget::availableGeometry ( <a href="tqwidget.html">TQWidget</a>&nbsp;*&nbsp;widget ) const
+</h3>
+This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
+<p> Returns the available geometry of the screen which contains <em>widget</em>.
+<p> <p>See also <a href="#screenGeometry">screenGeometry</a>().
+
+<h3 class=fn>const&nbsp;<a href="tqrect.html">TQRect</a>&nbsp;&amp; <a name="availableGeometry-3"></a>TQDesktopWidget::availableGeometry ( const&nbsp;<a href="tqpoint.html">TQPoint</a>&nbsp;&amp;&nbsp;p ) const
+</h3>
+This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
+<p> Returns the available geometry of the screen which contains <em>p</em>.
+<p> <p>See also <a href="#screenGeometry">screenGeometry</a>().
+
+<h3 class=fn>bool <a name="isVirtualDesktop"></a>TQDesktopWidget::isVirtualDesktop () const
+</h3>
+Returns TRUE if the system manages the available screens in a
+virtual desktop; otherwise returns FALSE.
+<p> For virtual desktops, <a href="#screen">screen</a>() will always return the same widget.
+The size of the virtual desktop is the size of this desktop
+widget.
+
+<h3 class=fn>int <a name="numScreens"></a>TQDesktopWidget::numScreens () const
+</h3>
+Returns the number of available screens.
+<p> <p>See also <a href="#primaryScreen">primaryScreen</a>().
+
+<h3 class=fn>int <a name="primaryScreen"></a>TQDesktopWidget::primaryScreen () const
+</h3>
+Returns the index of the primary screen.
+<p> <p>See also <a href="#numScreens">numScreens</a>().
+
+<h3 class=fn>void <a name="resized"></a>TQDesktopWidget::resized ( int&nbsp;screen )<tt> [signal]</tt>
+</h3>
+This signal is emitted when the size of <em>screen</em> changes.
+
+<h3 class=fn><a href="tqwidget.html">TQWidget</a>&nbsp;* <a name="screen"></a>TQDesktopWidget::screen ( int&nbsp;screen = -1 )
+</h3>
+Returns a widget that represents the screen with index <em>screen</em>.
+This widget can be used to draw directly on the desktop, using an
+unclipped painter like this:
+<p> <pre>
+ <a href="tqpainter.html">TQPainter</a> paint( TQApplication::<a href="ntqapplication.html#desktop">desktop</a>()-&gt;screen( 0 ), TRUE );
+ paint.draw...
+ ...
+ paint.<a href="tqpainter.html#end">end</a>();
+ </pre>
+
+<p> If the system uses a virtual desktop, the returned widget will
+have the geometry of the entire virtual desktop i.e. bounding
+every <em>screen</em>.
+<p> <p>See also <a href="#primaryScreen">primaryScreen</a>(), <a href="#numScreens">numScreens</a>(), and <a href="#isVirtualDesktop">isVirtualDesktop</a>().
+
+<h3 class=fn>const&nbsp;<a href="tqrect.html">TQRect</a>&nbsp;&amp; <a name="screenGeometry"></a>TQDesktopWidget::screenGeometry ( int&nbsp;screen = -1 ) const
+</h3>
+Returns the geometry of the screen with index <em>screen</em>.
+<p> <p>See also <a href="#screenNumber">screenNumber</a>().
+
+<h3 class=fn>const&nbsp;<a href="tqrect.html">TQRect</a>&nbsp;&amp; <a name="screenGeometry-2"></a>TQDesktopWidget::screenGeometry ( <a href="tqwidget.html">TQWidget</a>&nbsp;*&nbsp;widget ) const
+</h3>
+This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
+<p> Returns the geometry of the screen which contains <em>widget</em>.
+
+<h3 class=fn>const&nbsp;<a href="tqrect.html">TQRect</a>&nbsp;&amp; <a name="screenGeometry-3"></a>TQDesktopWidget::screenGeometry ( const&nbsp;<a href="tqpoint.html">TQPoint</a>&nbsp;&amp;&nbsp;p ) const
+</h3>
+This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
+<p> Returns the geometry of the screen which contains <em>p</em>.
+
+<h3 class=fn>int <a name="screenNumber"></a>TQDesktopWidget::screenNumber ( <a href="tqwidget.html">TQWidget</a>&nbsp;*&nbsp;widget = 0 ) const
+</h3>
+Returns the index of the screen that contains the largest
+part of <em>widget</em>, or -1 if the widget not on a screen.
+<p> <p>See also <a href="#primaryScreen">primaryScreen</a>().
+
+<h3 class=fn>int <a name="screenNumber-2"></a>TQDesktopWidget::screenNumber ( const&nbsp;<a href="tqpoint.html">TQPoint</a>&nbsp;&amp;&nbsp;point ) const
+</h3>
+This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
+<p> Returns the index of the screen that contains <em>point</em>, or -1 if
+no screen contains the point.
+<p> <p>See also <a href="#primaryScreen">primaryScreen</a>().
+
+<!-- eof -->
+<hr><p>
+This file is part of the <a href="index.html">TQt toolkit</a>.
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+<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
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+<td>Copyright &copy; 2007
+<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
+<td align=right><div align=right>TQt 3.3.8</div>
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+</html>