1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
<!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/iconview/tqiconview.cpp:585 -->
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>TQIconDrag 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>TQIconDrag Class Reference<br><small>[<a href="iconview.html">iconview module</a>]</small></h1>
<p>The TQIconDrag class supports drag and drop operations
within a TQIconView.
<a href="#details">More...</a>
<p><tt>#include <<a href="tqiconview-h.html">tqiconview.h</a>></tt>
<p>Inherits <a href="tqdragobject.html">TQDragObject</a>.
<p><a href="tqicondrag-members.html">List of all member functions.</a>
<h2>Public Members</h2>
<ul>
<li class=fn><a href="#TQIconDrag"><b>TQIconDrag</b></a> ( TQWidget * dragSource, const char * name = 0 )</li>
<li class=fn>virtual <a href="#~TQIconDrag"><b>~TQIconDrag</b></a> ()</li>
<li class=fn>void <a href="#append"><b>append</b></a> ( const TQIconDragItem & i, const TQRect & pr, const TQRect & tr )</li>
<li class=fn>virtual TQByteArray <a href="#encodedData"><b>encodedData</b></a> ( const char * mime ) const</li>
</ul>
<h2>Static Public Members</h2>
<ul>
<li class=fn>bool <a href="#canDecode"><b>canDecode</b></a> ( TQMimeSource * e )</li>
</ul>
<hr><a name="details"></a><h2>Detailed Description</h2>
<p> The TQIconDrag class supports drag and drop operations
within a <a href="tqiconview.html">TQIconView</a>.
<p>
<p> A TQIconDrag object is used to maintain information about the
positions of dragged items and the data associated with the
dragged items. TQIconViews are able to use this information to
paint the dragged items in the correct positions. Internally
TQIconDrag stores the data associated with drag items in
<a href="tqicondragitem.html">TQIconDragItem</a> objects.
<p> If you want to use the extended drag-and-drop functionality of
TQIconView, create a TQIconDrag object in a reimplementation of
<a href="tqiconview.html#dragObject">TQIconView::dragObject</a>(). Then create a TQIconDragItem for each item
which should be dragged, set the data it represents with
<a href="tqicondragitem.html#setData">TQIconDragItem::setData</a>(), and add each TQIconDragItem to the drag
object using <a href="#append">append</a>().
<p> The data in TQIconDragItems is stored in a <a href="tqbytearray.html">TQByteArray</a> and is
mime-typed (see <a href="tqmimesource.html">TQMimeSource</a> and the
<a href="http://doc.trolltech.com/dnd.html">Drag and Drop</a>
overview). If you want to use your own mime-types derive a class
from TQIconDrag and reimplement <a href="tqmimesource.html#format">format</a>(), <a href="#encodedData">encodedData</a>() and
<a href="#canDecode">canDecode</a>().
<p> The fileiconview example program demonstrates the use of the
TQIconDrag class including subclassing and reimplementing
dragObject(), format(), encodedData() and canDecode(). See the files
<tt>qt/examples/fileiconview/tqfileiconview.h</tt> and
<tt>qt/examples/fileiconview/tqfileiconview.cpp</tt>.
<p> <p>See also <a href="tqmimesource.html#format">TQMimeSource::format</a>() and <a href="draganddrop.html">Drag And Drop Classes</a>.
<hr><h2>Member Function Documentation</h2>
<h3 class=fn><a name="TQIconDrag"></a>TQIconDrag::TQIconDrag ( <a href="tqwidget.html">TQWidget</a> * dragSource, const char * name = 0 )
</h3>
Constructs a drag object called <em>name</em>, which is a child of <em>dragSource</em>.
<p> Note that the drag object will be deleted when <em>dragSource</em> is deleted.
<h3 class=fn><a name="~TQIconDrag"></a>TQIconDrag::~TQIconDrag ()<tt> [virtual]</tt>
</h3>
Destructor.
<h3 class=fn>void <a name="append"></a>TQIconDrag::append ( const <a href="tqicondragitem.html">TQIconDragItem</a> & i, const <a href="tqrect.html">TQRect</a> & pr, const <a href="tqrect.html">TQRect</a> & tr )
</h3>
Append the <a href="tqicondragitem.html">TQIconDragItem</a>, <em>i</em>, to the TQIconDrag object's list of
items. You must also supply the geometry of the pixmap, <em>pr</em>, and
the textual caption, <em>tr</em>.
<p> <p>See also <a href="tqicondragitem.html">TQIconDragItem</a>.
<p>Example: <a href="fileiconview-example.html#x829">fileiconview/tqfileiconview.cpp</a>.
<h3 class=fn>bool <a name="canDecode"></a>TQIconDrag::canDecode ( <a href="tqmimesource.html">TQMimeSource</a> * e )<tt> [static]</tt>
</h3>
Returns TRUE if <em>e</em> can be decoded by the TQIconDrag, otherwise
return FALSE.
<p>Example: <a href="fileiconview-example.html#x830">fileiconview/tqfileiconview.cpp</a>.
<h3 class=fn><a href="tqbytearray.html">TQByteArray</a> <a name="encodedData"></a>TQIconDrag::encodedData ( const char * mime ) const<tt> [virtual]</tt>
</h3>
Returns the encoded data of the drag object if <em>mime</em> is
application/x-qiconlist.
<p>Example: <a href="fileiconview-example.html#x831">fileiconview/tqfileiconview.cpp</a>.
<p>Reimplemented from <a href="tqmimesource.html#encodedData">TQMimeSource</a>.
<!-- eof -->
<hr><p>
This file is part of the <a href="index.html">TQt 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>TQt 3.3.8</div>
</table></div></address></body>
</html>
|
