You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
306 lines
11 KiB
306 lines
11 KiB
<!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/examples/iconview/simple_dd/simple_dd.doc:1 -->
|
|
<html>
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
|
<title>Drag and Drop (Simple)</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>Drag and Drop (Simple)</h1>
|
|
|
|
|
|
<p>
|
|
This provides a very simple example of TQt's drag and drop
|
|
functionality.
|
|
<p> For a more complete example see the <a href="dragdrop-example.html">Drag and Drop example</a>.
|
|
<p> <hr>
|
|
<p> Header file:
|
|
<p> <pre>/****************************************************************************
|
|
** $Id: qt/main.h 3.3.8 edited Jan 11 14:37 $
|
|
**
|
|
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
|
|
**
|
|
** This file is part of an example program for TQt. This example
|
|
** program may be used, distributed and modified without limitation.
|
|
**
|
|
*****************************************************************************/
|
|
|
|
#include <<a href="qapplication-h.html">ntqapplication.h</a>>
|
|
#include <<a href="tqcursor-h.html">tqcursor.h</a>>
|
|
#include <<a href="qsplitter-h.html">ntqsplitter.h</a>>
|
|
#include <<a href="tqlistbox-h.html">tqlistbox.h</a>>
|
|
#include <<a href="tqiconview-h.html">tqiconview.h</a>>
|
|
#include <<a href="tqpixmap-h.html">tqpixmap.h</a>>
|
|
|
|
class TQDragEnterEvent;
|
|
class TQDragDropEvent;
|
|
|
|
|
|
class DDListBox : public <a href="tqlistbox.html">TQListBox</a>
|
|
{
|
|
<a href="metaobjects.html#TQ_OBJECT">TQ_OBJECT</a>
|
|
public:
|
|
DDListBox( <a href="tqwidget.html">TQWidget</a> * parent = 0, const char * name = 0, WFlags f = 0 );
|
|
// Low-level drag and drop
|
|
void dragEnterEvent( <a href="tqdragenterevent.html">TQDragEnterEvent</a> *evt );
|
|
void dropEvent( <a href="tqdropevent.html">TQDropEvent</a> *evt );
|
|
void mousePressEvent( <a href="tqmouseevent.html">TQMouseEvent</a> *evt );
|
|
void mouseMoveEvent( <a href="tqmouseevent.html">TQMouseEvent</a> * );
|
|
private:
|
|
int dragging;
|
|
};
|
|
|
|
|
|
class DDIconViewItem : public <a href="tqiconviewitem.html">TQIconViewItem</a>
|
|
{
|
|
public:
|
|
DDIconViewItem( <a href="tqiconview.html">TQIconView</a> *parent, const <a href="tqstring.html">TQString</a>& text, const <a href="tqpixmap.html">TQPixmap</a>& icon ) :
|
|
<a href="tqiconviewitem.html">TQIconViewItem</a>( parent, text, icon ) {}
|
|
DDIconViewItem( <a href="tqiconview.html">TQIconView</a> *parent, const <a href="tqstring.html">TQString</a> &text ) :
|
|
<a href="tqiconviewitem.html">TQIconViewItem</a>( parent, text ) {}
|
|
// High-level drag and drop
|
|
bool acceptDrop( const <a href="tqmimesource.html">TQMimeSource</a> *mime ) const;
|
|
void dropped( <a href="tqdropevent.html">TQDropEvent</a> *evt, const <a href="tqvaluelist.html">TQValueList</a><TQIconDragItem>& );
|
|
};
|
|
|
|
|
|
class DDIconView : public <a href="tqiconview.html">TQIconView</a>
|
|
{
|
|
TQ_OBJECT
|
|
public:
|
|
DDIconView( <a href="tqwidget.html">TQWidget</a> * parent = 0, const char * name = 0, WFlags f = 0 ) :
|
|
<a href="tqiconview.html">TQIconView</a>( parent, name, f ) {}
|
|
// High-level drag and drop
|
|
<a href="tqdragobject.html">TQDragObject</a> *dragObject();
|
|
public slots:
|
|
void slotNewItem( <a href="tqdropevent.html">TQDropEvent</a> *evt, const <a href="tqvaluelist.html">TQValueList</a><TQIconDragItem>& list );
|
|
};
|
|
|
|
</pre>
|
|
|
|
<p> <hr>
|
|
<p> Implementation:
|
|
<p> <pre>/****************************************************************************
|
|
** $Id: qt/main.cpp 3.3.8 edited Jan 11 14:37 $
|
|
**
|
|
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
|
|
**
|
|
** This file is part of an example program for TQt. This example
|
|
** program may be used, distributed and modified without limitation.
|
|
**
|
|
*****************************************************************************/
|
|
|
|
#include "main.h"
|
|
|
|
const char* red_icon[]={
|
|
"16 16 2 1",
|
|
"r c red",
|
|
". c None",
|
|
"................",
|
|
"................",
|
|
"..rrrrrrrrrrrr..",
|
|
"..rrrrrrrrrrrr..",
|
|
"..rrrrrrrrrrrr..",
|
|
"..rrr......rrr..",
|
|
"..rrr......rrr..",
|
|
"..rrr......rrr..",
|
|
"..rrr......rrr..",
|
|
"..rrr......rrr..",
|
|
"..rrr......rrr..",
|
|
"..rrrrrrrrrrrr..",
|
|
"..rrrrrrrrrrrr..",
|
|
"..rrrrrrrrrrrr..",
|
|
"................",
|
|
"................"};
|
|
|
|
const char* blue_icon[]={
|
|
"16 16 2 1",
|
|
"b c blue",
|
|
". c None",
|
|
"................",
|
|
"................",
|
|
"..bbbbbbbbbbbb..",
|
|
"..bbbbbbbbbbbb..",
|
|
"..bbbbbbbbbbbb..",
|
|
"..bbb......bbb..",
|
|
"..bbb......bbb..",
|
|
"..bbb......bbb..",
|
|
"..bbb......bbb..",
|
|
"..bbb......bbb..",
|
|
"..bbb......bbb..",
|
|
"..bbbbbbbbbbbb..",
|
|
"..bbbbbbbbbbbb..",
|
|
"..bbbbbbbbbbbb..",
|
|
"................",
|
|
"................"};
|
|
|
|
const char* green_icon[]={
|
|
"16 16 2 1",
|
|
"g c green",
|
|
". c None",
|
|
"................",
|
|
"................",
|
|
"..gggggggggggg..",
|
|
"..gggggggggggg..",
|
|
"..gggggggggggg..",
|
|
"..ggg......ggg..",
|
|
"..ggg......ggg..",
|
|
"..ggg......ggg..",
|
|
"..ggg......ggg..",
|
|
"..ggg......ggg..",
|
|
"..ggg......ggg..",
|
|
"..gggggggggggg..",
|
|
"..gggggggggggg..",
|
|
"..gggggggggggg..",
|
|
"................",
|
|
"................"};
|
|
|
|
|
|
// ListBox -- low level drag and drop
|
|
|
|
<a name="f589"></a>DDListBox::DDListBox( <a href="tqwidget.html">TQWidget</a> * parent, const char * name, WFlags f ) :
|
|
<a href="tqlistbox.html">TQListBox</a>( parent, name, f )
|
|
{
|
|
<a href="tqwidget.html#setAcceptDrops">setAcceptDrops</a>( TRUE );
|
|
dragging = FALSE;
|
|
}
|
|
|
|
|
|
<a name="x2829"></a>void DDListBox::<a href="tqwidget.html#dragEnterEvent">dragEnterEvent</a>( <a href="tqdragenterevent.html">TQDragEnterEvent</a> *evt )
|
|
{
|
|
<a name="x2827"></a> if ( TQTextDrag::<a href="tqtextdrag.html#canDecode">canDecode</a>( evt ) )
|
|
<a name="x2819"></a> evt-><a href="tqdragmoveevent.html#accept">accept</a>();
|
|
}
|
|
|
|
|
|
<a name="x2830"></a>void DDListBox::<a href="tqwidget.html#dropEvent">dropEvent</a>( <a href="tqdropevent.html">TQDropEvent</a> *evt )
|
|
{
|
|
<a href="tqstring.html">TQString</a> text;
|
|
|
|
<a name="x2828"></a> if ( TQTextDrag::<a href="tqtextdrag.html#decode">decode</a>( evt, text ) )
|
|
<a href="tqlistbox.html#insertItem">insertItem</a>( text );
|
|
}
|
|
|
|
|
|
<a name="x2832"></a>void DDListBox::<a href="tqwidget.html#mousePressEvent">mousePressEvent</a>( <a href="tqmouseevent.html">TQMouseEvent</a> *evt )
|
|
{
|
|
TQListBox::<a href="tqwidget.html#mousePressEvent">mousePressEvent</a>( evt );
|
|
dragging = TRUE;
|
|
}
|
|
|
|
|
|
<a name="x2831"></a>void DDListBox::<a href="tqwidget.html#mouseMoveEvent">mouseMoveEvent</a>( <a href="tqmouseevent.html">TQMouseEvent</a> * )
|
|
{
|
|
if ( dragging ) {
|
|
<a href="tqdragobject.html">TQDragObject</a> *d = new <a href="tqtextdrag.html">TQTextDrag</a>( currentText(), this );
|
|
<a name="x2818"></a> d-><a href="tqdragobject.html#dragCopy">dragCopy</a>(); // do NOT delete d.
|
|
dragging = FALSE;
|
|
}
|
|
}
|
|
|
|
|
|
// IconViewIcon -- high level drag and drop
|
|
|
|
|
|
<a name="x2822"></a>bool DDIconViewItem::<a href="tqiconviewitem.html#acceptDrop">acceptDrop</a>( const <a href="tqmimesource.html">TQMimeSource</a> *mime ) const
|
|
{
|
|
<a name="x2825"></a> if ( mime-><a href="tqmimesource.html#provides">provides</a>( "text/plain" ) )
|
|
return TRUE;
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
<a name="x2823"></a>void DDIconViewItem::<a href="tqiconviewitem.html#dropped">dropped</a>( <a href="tqdropevent.html">TQDropEvent</a> *evt, const <a href="tqvaluelist.html">TQValueList</a><TQIconDragItem>& )
|
|
{
|
|
<a href="tqstring.html">TQString</a> label;
|
|
|
|
if ( TQTextDrag::<a href="tqtextdrag.html#decode">decode</a>( evt, label ) )
|
|
setText( label );
|
|
}
|
|
|
|
|
|
// IconView -- high level drag and drop
|
|
|
|
<a name="x2820"></a>TQDragObject *DDIconView::<a href="tqiconview.html#dragObject">dragObject</a>()
|
|
{
|
|
return new <a href="tqtextdrag.html">TQTextDrag</a>( <a href="tqiconview.html#currentItem">currentItem</a>()->text(), this );
|
|
}
|
|
|
|
void <a name="f588"></a>DDIconView::slotNewItem( <a href="tqdropevent.html">TQDropEvent</a> *evt, const <a href="tqvaluelist.html">TQValueList</a><TQIconDragItem>& )
|
|
{
|
|
<a href="tqstring.html">TQString</a> label;
|
|
|
|
if ( TQTextDrag::<a href="tqtextdrag.html#decode">decode</a>( evt, label ) ) {
|
|
DDIconViewItem *item = new DDIconViewItem( this, label );
|
|
<a name="x2824"></a> item-><a href="tqiconviewitem.html#setRenameEnabled">setRenameEnabled</a>( TRUE );
|
|
}
|
|
}
|
|
|
|
|
|
|
|
int main( int argc, char *argv[] )
|
|
{
|
|
<a href="ntqapplication.html">TQApplication</a> app( argc, argv );
|
|
|
|
// Create and show the widgets
|
|
<a href="ntqsplitter.html">TQSplitter</a> *split = new <a href="ntqsplitter.html">TQSplitter</a>();
|
|
DDIconView *iv = new DDIconView( split );
|
|
(void) new DDListBox( split );
|
|
app.<a href="ntqapplication.html#setMainWidget">setMainWidget</a>( split );
|
|
split-><a href="tqwidget.html#resize">resize</a>( 600, 400 );
|
|
split-><a href="tqwidget.html#show">show</a>();
|
|
|
|
// Set up the connection so that we can drop items into the icon view
|
|
TQObject::<a href="tqobject.html#connect">connect</a>(
|
|
<a name="x2821"></a> iv, TQ_SIGNAL(<a href="tqiconview.html#dropped">dropped</a>(TQDropEvent*, const <a href="tqvaluelist.html">TQValueList</a><TQIconDragItem>&)),
|
|
iv, TQ_SLOT(slotNewItem(TQDropEvent*, const <a href="tqvaluelist.html">TQValueList</a><TQIconDragItem>&)));
|
|
|
|
// Populate the TQIconView with icons
|
|
DDIconViewItem *item;
|
|
item = new DDIconViewItem( iv, "Red", TQPixmap( red_icon ) );
|
|
item-><a href="tqiconviewitem.html#setRenameEnabled">setRenameEnabled</a>( TRUE );
|
|
item = new DDIconViewItem( iv, "Green", TQPixmap( green_icon ) );
|
|
item-><a href="tqiconviewitem.html#setRenameEnabled">setRenameEnabled</a>( TRUE );
|
|
item = new DDIconViewItem( iv, "Blue", TQPixmap( blue_icon ) );
|
|
item-><a href="tqiconviewitem.html#setRenameEnabled">setRenameEnabled</a>( TRUE );
|
|
|
|
return app.<a href="ntqapplication.html#exec">exec</a>();
|
|
}
|
|
|
|
|
|
</pre>
|
|
|
|
<p> <p>See also <a href="examples.html">Examples</a>.
|
|
|
|
<!-- eof -->
|
|
<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>
|