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<title>A qt-interest mail archive search</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>A qt-interest mail archive search</h1>

 
<p> 
<p> This example does a search on the qt-interest mailinglist archives. It uses
<a href="qhttp.html">TQHttp</a> to issue the search command and to fetch the results. The GUI parts
were done using <a href="designer-manual.html">TQt Designer</a>.
<p> <hr>
<p> The implementation of the HTTP requests (archivedialog.ui.h):
<p> <pre>/****************************************************************************
** $Id: qt/archivedialog.ui.h   3.3.8   edited Jan 29 15:54 $
**
** 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.
**
*****************************************************************************/

/****************************************************************************
** ui.h extension file, included from the uic-generated form implementation.
**
** If you wish to add, delete or rename functions or slots use
** TQt Designer which will update this file, preserving your code. Create an
** init() function in place of a constructor, and a destroy() function in
** place of a destructor.
*****************************************************************************/

void ArchiveDialog::init()
{
    connect(&amp;articleSearcher, SIGNAL(done(bool)), this, SLOT(searchDone(bool)));
    connect(&amp;articleFetcher, SIGNAL(done(bool)), this, SLOT(fetchDone(bool)));
    connect(myListView, SIGNAL(selectionChanged(TQListViewItem*)), this, SLOT(fetch(TQListViewItem*)));
    connect(myLineEdit, SIGNAL(returnPressed()), this, SLOT(search()));
    connect(myListView, SIGNAL(returnPressed(TQListViewItem*)), this, SLOT(fetch(TQListViewItem*)));
    connect(myPushButton, SIGNAL(clicked()), this, SLOT(close()));
}

void ArchiveDialog::fetch( <a href="qlistviewitem.html">TQListViewItem</a> *it )
{
<a name="x477"></a>    <a href="qurl.html">TQUrl</a> u(it-&gt;<a href="qlistviewitem.html#text">text</a>(1));
<a name="x485"></a>    articleFetcher.setHost(u.<a href="qurl.html#host">host</a>());
    articleFetcher.get(it-&gt;<a href="qlistviewitem.html#text">text</a>(1));
}

void ArchiveDialog::fetchDone( bool error )
{
    if (error) {
<a name="x478"></a>        TQMessageBox::<a href="qmessagebox.html#critical">critical</a>(this, "Error fetching",
                              "An error occurred when fetching this document: "
                              + articleFetcher.errorString(),
                              TQMessageBox::Ok, TQMessageBox::NoButton);
    } else {
        myTextBrowser-&gt;setText(articleFetcher.readAll());
    }
}

void ArchiveDialog::search()
{
    if (articleSearcher.state() == TQHttp::HostLookup
        || articleSearcher.state() == TQHttp::Connecting
        || articleSearcher.state() == TQHttp::Sending
        || articleSearcher.state() == TQHttp::Reading) {
        articleSearcher.abort();
    }

    if (myLineEdit-&gt;text() == "") {
        TQMessageBox::<a href="qmessagebox.html#critical">critical</a>(this, "Empty query",
                              "Please type a search string.",
                              TQMessageBox::Ok, TQMessageBox::NoButton);
    } else {
<a name="x474"></a>        TQApplication::<a href="qapplication.html#setOverrideCursor">setOverrideCursor</a>(TQCursor(TQt::WaitCursor));

        articleSearcher.setHost("lists.trolltech.com");

        <a href="qhttprequestheader.html">TQHttpRequestHeader</a> header("POST", "/qt-interest/search.php");
<a name="x476"></a>        header.<a href="qhttpheader.html#setValue">setValue</a>("Host", "lists.trolltech.com");
<a name="x475"></a>        header.<a href="qhttpheader.html#setContentType">setContentType</a>("application/x-www-form-urlencoded");

        <a href="qstring.html">TQString</a> encodedTopic = myLineEdit-&gt;text();
<a name="x484"></a>        TQUrl::<a href="qurl.html#encode">encode</a>(encodedTopic);
        <a href="qstring.html">TQString</a> searchString = "qt-interest=on&amp;search=" + encodedTopic;

<a name="x483"></a>        articleSearcher.request(header, searchString.<a href="qstring.html#utf8">utf8</a>());
    }

}

void ArchiveDialog::searchDone( bool error )
{
    if (error) {
        TQMessageBox::<a href="qmessagebox.html#critical">critical</a>(this, "Error searching",
                              "An error occurred when searching: "
                              + articleSearcher.errorString(),
                              TQMessageBox::Ok, TQMessageBox::NoButton);
    } else {
        <a href="qstring.html">TQString</a> result(articleSearcher.readAll());

        <a href="qregexp.html">TQRegExp</a> rx("&lt;a href=\"(http://lists\\.trolltech\\.com/qt-interest/.*)\"&gt;(.*)&lt;/a&gt;");
<a name="x482"></a>        rx.<a href="qregexp.html#setMinimal">setMinimal</a>(TRUE);
        int pos = 0;
        while (pos &gt;= 0) {
<a name="x481"></a>            pos = rx.<a href="qregexp.html#search">search</a>(result, pos);
            if (pos &gt; -1) {
<a name="x480"></a>                pos += rx.<a href="qregexp.html#matchedLength">matchedLength</a>();
<a name="x479"></a>                new <a href="qlistviewitem.html">TQListViewItem</a>(myListView, rx.<a href="qregexp.html#cap">cap</a>(2), rx.<a href="qregexp.html#cap">cap</a>(1));
            }
        }
    }

<a name="x473"></a>    TQApplication::<a href="qapplication.html#restoreOverrideCursor">restoreOverrideCursor</a>();
}
</pre>

<p> <hr>
<p> Main (main.cpp):
<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 "archivedialog.h"
#include &lt;<a href="qapplication-h.html">qapplication.h</a>&gt;

int main(int argc, char **argv)
{
    <a href="qapplication.html">TQApplication</a> a( argc, argv );
    ArchiveDialog ad;
    ad.show();

<a name="x489"></a><a name="x487"></a>    TQObject::<a href="qobject.html#connect">connect</a>( &amp;a, SIGNAL(<a href="qapplication.html#lastWindowClosed">lastWindowClosed</a>()),
<a name="x488"></a>                      &amp;a, SLOT(<a href="qapplication.html#quit">quit</a>()) );

<a name="x486"></a>    return a.<a href="qapplication.html#exec">exec</a>();
}
</pre>

<p>See also <a href="network-examples.html">Network Examples</a>.

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