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| author | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2011-07-10 15:24:15 -0500 |
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| committer | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2011-07-10 15:24:15 -0500 |
| commit | bd0f3345a938b35ce6a12f6150373b0955b8dd12 (patch) | |
| tree | 7a520322212d48ebcb9fbe1087e7fca28b76185c /doc/html/qcursor.html | |
| download | qt3-bd0f3345a938b35ce6a12f6150373b0955b8dd12.tar.gz qt3-bd0f3345a938b35ce6a12f6150373b0955b8dd12.zip | |
Add Qt3 development HEAD version
Diffstat (limited to 'doc/html/qcursor.html')
| -rw-r--r-- | doc/html/qcursor.html | 287 |
1 files changed, 287 insertions, 0 deletions
diff --git a/doc/html/qcursor.html b/doc/html/qcursor.html new file mode 100644 index 0000000..927c182 --- /dev/null +++ b/doc/html/qcursor.html @@ -0,0 +1,287 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> +<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/kernel/qcursor.cpp:47 --> +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> +<title>QCursor Class</title> +<style type="text/css"><!-- +fn { margin-left: 1cm; text-indent: -1cm; } +a:link { color: #004faf; text-decoration: none } +a:visited { color: #672967; text-decoration: none } +body { background: #ffffff; color: black; } +--></style> +</head> +<body> + +<table border="0" cellpadding="0" cellspacing="0" width="100%"> +<tr bgcolor="#E5E5E5"> +<td valign=center> + <a href="index.html"> +<font color="#004faf">Home</font></a> + | <a href="classes.html"> +<font color="#004faf">All Classes</font></a> + | <a href="mainclasses.html"> +<font color="#004faf">Main Classes</font></a> + | <a href="annotated.html"> +<font color="#004faf">Annotated</font></a> + | <a href="groups.html"> +<font color="#004faf">Grouped Classes</font></a> + | <a href="functions.html"> +<font color="#004faf">Functions</font></a> +</td> +<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>QCursor Class Reference</h1> + +<p>The QCursor class provides a mouse cursor with an arbitrary +shape. +<a href="#details">More...</a> +<p><tt>#include <<a href="qcursor-h.html">qcursor.h</a>></tt> +<p>Inherits <a href="qt.html">Qt</a>. +<p><a href="qcursor-members.html">List of all member functions.</a> +<h2>Public Members</h2> +<ul> +<li class=fn><a href="#QCursor"><b>QCursor</b></a> ()</li> +<li class=fn><a href="#QCursor-2"><b>QCursor</b></a> ( int shape )</li> +<li class=fn><a href="#QCursor-3"><b>QCursor</b></a> ( const QBitmap & bitmap, const QBitmap & mask, int hotX = -1, int hotY = -1 )</li> +<li class=fn><a href="#QCursor-4"><b>QCursor</b></a> ( const QPixmap & pixmap, int hotX = -1, int hotY = -1 )</li> +<li class=fn><a href="#QCursor-5"><b>QCursor</b></a> ( const QCursor & c )</li> +<li class=fn><a href="#~QCursor"><b>~QCursor</b></a> ()</li> +<li class=fn>QCursor & <a href="#operator-eq"><b>operator=</b></a> ( const QCursor & c )</li> +<li class=fn>int <a href="#shape"><b>shape</b></a> () const</li> +<li class=fn>void <a href="#setShape"><b>setShape</b></a> ( int shape )</li> +<li class=fn>const QBitmap * <a href="#bitmap"><b>bitmap</b></a> () const</li> +<li class=fn>const QBitmap * <a href="#mask"><b>mask</b></a> () const</li> +<li class=fn>QPoint <a href="#hotSpot"><b>hotSpot</b></a> () const</li> +<li class=fn>HCURSOR <b>handle</b> () const</li> +<li class=fn><a href="#QCursor-6"><b>QCursor</b></a> ( HCURSOR handle )</li> +<li class=fn>HANDLE <a href="#handle"><b>handle</b></a> () const</li> +</ul> +<h2>Static Public Members</h2> +<ul> +<li class=fn>QPoint <a href="#pos"><b>pos</b></a> ()</li> +<li class=fn>void <a href="#setPos"><b>setPos</b></a> ( int x, int y )</li> +<li class=fn>void <a href="#setPos-2"><b>setPos</b></a> ( const QPoint & )</li> +<li class=fn>void <a href="#initialize"><b>initialize</b></a> ()</li> +<li class=fn>void <a href="#cleanup"><b>cleanup</b></a> ()</li> +</ul> +<h2>Related Functions</h2> +<ul> +<li class=fn>QDataStream & <a href="#operator-lt-lt"><b>operator<<</b></a> ( QDataStream & s, const QCursor & c )</li> +<li class=fn>QDataStream & <a href="#operator-gt-gt"><b>operator>></b></a> ( QDataStream & s, QCursor & c )</li> +</ul> +<hr><a name="details"></a><h2>Detailed Description</h2> + + +<p> The QCursor class provides a mouse cursor with an arbitrary +shape. +<p> + +<p> This class is mainly used to create mouse cursors that are +associated with particular widgets and to get and set the position +of the mouse cursor. +<p> Qt has a number of standard cursor shapes, but you can also make +custom cursor shapes based on a <a href="qbitmap.html">QBitmap</a>, a mask and a hotspot. +<p> To associate a cursor with a widget, use <a href="qwidget.html#setCursor">QWidget::setCursor</a>(). To +associate a cursor with all widgets (normally for a short period +of time), use <a href="qapplication.html#setOverrideCursor">QApplication::setOverrideCursor</a>(). +<p> To set a cursor shape use <a href="#setShape">QCursor::setShape</a>() or use the QCursor +constructor which takes the shape as argument, or you can use one +of the predefined cursors defined in the <a href="qt.html#CursorShape-enum">CursorShape</a> enum. +<p> If you want to create a cursor with your own bitmap, either use +the QCursor constructor which takes a bitmap and a mask or the +constructor which takes a pixmap as arguments. +<p> To set or get the position of the mouse cursor use the static +methods <a href="#pos">QCursor::pos</a>() and <a href="#setPos">QCursor::setPos</a>(). +<p> <center><img src="cursors.png" alt="Cursor Shapes"></center> +<p> <p>See also <a href="qwidget.html">QWidget</a>, <a href="guibooks.html#fowler">GUI Design Handbook: + Cursors</a>, <a href="appearance.html">Widget Appearance and Style</a>, and <a href="shared.html">Implicitly and Explicitly Shared Classes</a>. + +<p> On X11, Qt supports the <a href="http://www.xfree86.org/4.3.0/Xcursor.3.html">Xcursor</a> +library, which allows for full color icon themes. The table below +shows the cursor name used for each Qt::CursorShape value. If a +cursor cannot be found using the name shown below, a standard X11 +cursor will be used instead. Note: X11 does not provide +appropriate cursors for all possible Qt::CursorShape values. It +is possible that some cursors will be taken from the Xcursor +theme, while others will use an internal bitmap cursor. +<p> <center><table cellpadding="4" cellspacing="2" border="0"> +<tr bgcolor="#a2c511"> <th valign="top">Qt::CursorShape Values <th valign="top">Cursor Names +<tr bgcolor="#f0f0f0"> <td valign="top">Qt::ArrowCursor <td valign="top">left_ptr +<tr bgcolor="#d0d0d0"> <td valign="top">Qt::UpArrowCursor <td valign="top">up_arrow +<tr bgcolor="#f0f0f0"> <td valign="top">Qt::CrossCursor <td valign="top">cross +<tr bgcolor="#d0d0d0"> <td valign="top">Qt::WaitCursor <td valign="top">wait +<tr bgcolor="#f0f0f0"> <td valign="top">Qt::BusyCursor <td valign="top">left_ptr_watch +<tr bgcolor="#d0d0d0"> <td valign="top">Qt::IbeamCursor <td valign="top">ibeam +<tr bgcolor="#f0f0f0"> <td valign="top">Qt::SizeVerCursor <td valign="top">size_ver +<tr bgcolor="#d0d0d0"> <td valign="top">Qt::SizeHorCursor <td valign="top">size_hor +<tr bgcolor="#f0f0f0"> <td valign="top">Qt::SizeBDiagCursor <td valign="top">size_bdiag +<tr bgcolor="#d0d0d0"> <td valign="top">Qt::SizeFDiagCursor <td valign="top">size_fdiag +<tr bgcolor="#f0f0f0"> <td valign="top">Qt::SizeAllCursor <td valign="top">size_all +<tr bgcolor="#d0d0d0"> <td valign="top">Qt::SplitVCursor <td valign="top">split_v +<tr bgcolor="#f0f0f0"> <td valign="top">Qt::SplitHCursor <td valign="top">split_h +<tr bgcolor="#d0d0d0"> <td valign="top">Qt::PointingHandCursor <td valign="top">pointing_hand +<tr bgcolor="#f0f0f0"> <td valign="top">Qt::ForbiddenCursor <td valign="top">forbidden +<tr bgcolor="#d0d0d0"> <td valign="top">Qt::WhatsThisCursor <td valign="top">whats_this +</table></center> + +<hr><h2>Member Function Documentation</h2> +<h3 class=fn><a name="QCursor"></a>QCursor::QCursor () +</h3> +Constructs a cursor with the default arrow shape. + +<h3 class=fn><a name="QCursor-2"></a>QCursor::QCursor ( int shape ) +</h3> +Constructs a cursor with the specified <em>shape</em>. +<p> See <a href="qt.html#CursorShape-enum">CursorShape</a> for a list of shapes. +<p> <p>See also <a href="#setShape">setShape</a>(). + +<h3 class=fn><a name="QCursor-3"></a>QCursor::QCursor ( const <a href="qbitmap.html">QBitmap</a> & bitmap, const <a href="qbitmap.html">QBitmap</a> & mask, int hotX = -1, int hotY = -1 ) +</h3> +Constructs a custom bitmap cursor. +<p> <em>bitmap</em> and +<em>mask</em> make up the bitmap. +<em>hotX</em> and +<em>hotY</em> define the cursor's hot spot. +<p> If <em>hotX</em> is negative, it is set to the <tt>bitmap().width()/2</tt>. +If <em>hotY</em> is negative, it is set to the <tt>bitmap().height()/2</tt>. +<p> The cursor <em>bitmap</em> (B) and <em>mask</em> (M) bits are combined like this: +<ul> +<li> B=1 and M=1 gives black. +<li> B=0 and M=1 gives white. +<li> B=0 and M=0 gives transparent. +<li> B=1 and M=0 gives an undefined result. +</ul> +<p> Use the global Qt color <tt>color0</tt> to draw 0-pixels and <tt>color1</tt> to +draw 1-pixels in the bitmaps. +<p> Valid cursor sizes depend on the display hardware (or the +underlying window system). We recommend using 32x32 cursors, +because this size is supported on all platforms. Some platforms +also support 16x16, 48x48 and 64x64 cursors. +<p> <p>See also <a href="qbitmap.html#QBitmap">QBitmap::QBitmap</a>() and <a href="qpixmap.html#setMask">QBitmap::setMask</a>(). + +<h3 class=fn><a name="QCursor-4"></a>QCursor::QCursor ( const <a href="qpixmap.html">QPixmap</a> & pixmap, int hotX = -1, int hotY = -1 ) +</h3> +Constructs a custom pixmap cursor. +<p> <em>pixmap</em> is the image. It is usual to give it a mask (set using +<a href="qpixmap.html#setMask">QPixmap::setMask</a>()). <em>hotX</em> and <em>hotY</em> define the cursor's hot +spot. +<p> If <em>hotX</em> is negative, it is set to the <tt>pixmap().width()/2</tt>. +If <em>hotY</em> is negative, it is set to the <tt>pixmap().height()/2</tt>. +<p> Valid cursor sizes depend on the display hardware (or the +underlying window system). We recommend using 32x32 cursors, +because this size is supported on all platforms. Some platforms +also support 16x16, 48x48 and 64x64 cursors. +<p> Currently, only black-and-white pixmaps can be used. +<p> <p>See also <a href="qpixmap.html#QPixmap">QPixmap::QPixmap</a>() and <a href="qpixmap.html#setMask">QPixmap::setMask</a>(). + +<h3 class=fn><a name="QCursor-5"></a>QCursor::QCursor ( const <a href="qcursor.html">QCursor</a> & c ) +</h3> +Constructs a copy of the cursor <em>c</em>. + +<h3 class=fn><a name="QCursor-6"></a>QCursor::QCursor ( HCURSOR handle ) +</h3> + +<p> Creates a cursor with the specified window system handle <em>handle</em>. +<p> <b>Warning:</b> +Portable in principle, but if you use it you are probably about to +do something non-portable. Be careful. + +<h3 class=fn><a name="~QCursor"></a>QCursor::~QCursor () +</h3> +Destroys the cursor. + +<h3 class=fn>const <a href="qbitmap.html">QBitmap</a> * <a name="bitmap"></a>QCursor::bitmap () const +</h3> +Returns the cursor bitmap, or 0 if it is one of the standard +cursors. + +<h3 class=fn>void <a name="cleanup"></a>QCursor::cleanup ()<tt> [static]</tt> +</h3> +Internal function that deinitializes the predefined cursors. +This function is called from the <a href="qapplication.html">QApplication</a> destructor. +<p> <p>See also <a href="#initialize">initialize</a>(). + +<h3 class=fn>HANDLE <a name="handle"></a>QCursor::handle () const +</h3> +Returns the window system cursor handle. +<p> <b>Warning:</b> +Portable in principle, but if you use it you are probably about to +do something non-portable. Be careful. + +<h3 class=fn><a href="qpoint.html">QPoint</a> <a name="hotSpot"></a>QCursor::hotSpot () const +</h3> +Returns the cursor hot spot, or (0, 0) if it is one of the +standard cursors. + +<h3 class=fn>void <a name="initialize"></a>QCursor::initialize ()<tt> [static]</tt> +</h3> +Internal function that initializes the predefined cursors. +This function is called from the <a href="qapplication.html">QApplication</a> constructor. +<p> <p>See also <a href="#cleanup">cleanup</a>(). + +<h3 class=fn>const <a href="qbitmap.html">QBitmap</a> * <a name="mask"></a>QCursor::mask () const +</h3> +Returns the cursor bitmap mask, or 0 if it is one of the standard +cursors. + +<h3 class=fn><a href="qcursor.html">QCursor</a> & <a name="operator-eq"></a>QCursor::operator= ( const <a href="qcursor.html">QCursor</a> & c ) +</h3> +Assigns <em>c</em> to this cursor and returns a reference to this +cursor. + +<h3 class=fn><a href="qpoint.html">QPoint</a> <a name="pos"></a>QCursor::pos ()<tt> [static]</tt> +</h3> +Returns the position of the cursor (hot spot) in global screen +coordinates. +<p> You can call <a href="qwidget.html#mapFromGlobal">QWidget::mapFromGlobal</a>() to translate it to widget +coordinates. +<p> <p>See also <a href="#setPos">setPos</a>(), <a href="qwidget.html#mapFromGlobal">QWidget::mapFromGlobal</a>(), and <a href="qwidget.html#mapToGlobal">QWidget::mapToGlobal</a>(). + +<p>Examples: <a href="tutorial2-06.html#x2579">chart/canvasview.cpp</a>, <a href="fileiconview-example.html#x809">fileiconview/qfileiconview.cpp</a>, and <a href="menu-example.html#x1859">menu/menu.cpp</a>. +<h3 class=fn>void <a name="setPos"></a>QCursor::setPos ( int x, int y )<tt> [static]</tt> +</h3> +Moves the cursor (hot spot) to the global screen position (<em>x</em>, +<em>y</em>). +<p> You can call <a href="qwidget.html#mapToGlobal">QWidget::mapToGlobal</a>() to translate widget +coordinates to global screen coordinates. +<p> <p>See also <a href="#pos">pos</a>(), <a href="qwidget.html#mapFromGlobal">QWidget::mapFromGlobal</a>(), and <a href="qwidget.html#mapToGlobal">QWidget::mapToGlobal</a>(). + +<h3 class=fn>void <a name="setPos-2"></a>QCursor::setPos ( const <a href="qpoint.html">QPoint</a> & )<tt> [static]</tt> +</h3> +This is an overloaded member function, provided for convenience. It behaves essentially like the above function. +<p> +<h3 class=fn>void <a name="setShape"></a>QCursor::setShape ( int shape ) +</h3> +Sets the cursor to the shape identified by <em>shape</em>. +<p> See <a href="qt.html#CursorShape-enum">CursorShape</a> for the list of cursor shapes. +<p> <p>See also <a href="#shape">shape</a>(). + +<h3 class=fn>int <a name="shape"></a>QCursor::shape () const +</h3> +Returns the cursor shape identifier. The return value is one of +the <a href="qt.html#CursorShape-enum">CursorShape</a> enum values (cast to an int). +<p> <p>See also <a href="#setShape">setShape</a>(). + +<hr><h2>Related Functions</h2> +<h3 class=fn><a href="qdatastream.html">QDataStream</a> & <a name="operator-lt-lt"></a>operator<< ( <a href="qdatastream.html">QDataStream</a> & s, const <a href="qcursor.html">QCursor</a> & c ) +</h3> + +Writes the cursor <em>c</em> to the stream <em>s</em>. +<p> <p>See also <a href="datastreamformat.html">Format of the QDataStream operators</a>. + +<h3 class=fn><a href="qdatastream.html">QDataStream</a> & <a name="operator-gt-gt"></a>operator>> ( <a href="qdatastream.html">QDataStream</a> & s, <a href="qcursor.html">QCursor</a> & c ) +</h3> + +Reads a cursor from the stream <em>s</em> and sets <em>c</em> to the read data. +<p> <p>See also <a href="datastreamformat.html">Format of the QDataStream operators</a>. + +<!-- eof --> +<hr><p> +This file is part of the <a href="index.html">Qt toolkit</a>. +Copyright © 1995-2007 +<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center> +<table width=100% cellspacing=0 border=0><tr> +<td>Copyright © 2007 +<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a> +<td align=right><div align=right>Qt 3.3.8</div> +</table></div></address></body> +</html> |