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
125
|
/****************************************************************************
**
** Copyright (C) 1992-2008 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 <tqsocket.h>
#include <ntqapplication.h>
#include <ntqvbox.h>
#include <ntqhbox.h>
#include <tqtextview.h>
#include <tqlineedit.h>
#include <tqlabel.h>
#include <tqpushbutton.h>
#include <tqtextstream.h>
class Client : public TQVBox
{
TQ_OBJECT
public:
Client( const TQString &host, TQ_UINT16 port )
{
// GUI layout
infoText = new TQTextView( this );
TQHBox *hb = new TQHBox( this );
inputText = new TQLineEdit( hb );
TQPushButton *send = new TQPushButton( tr("Send") , hb );
TQPushButton *close = new TQPushButton( tr("Close connection") , this );
TQPushButton *quit = new TQPushButton( tr("Quit") , this );
connect( send, TQ_SIGNAL(clicked()), TQ_SLOT(sendToServer()) );
connect( close, TQ_SIGNAL(clicked()), TQ_SLOT(closeConnection()) );
connect( quit, TQ_SIGNAL(clicked()), tqApp, TQ_SLOT(quit()) );
// create the socket and connect various of its signals
socket = new TQSocket( this );
connect( socket, TQ_SIGNAL(connected()),
TQ_SLOT(socketConnected()) );
connect( socket, TQ_SIGNAL(connectionClosed()),
TQ_SLOT(socketConnectionClosed()) );
connect( socket, TQ_SIGNAL(readyRead()),
TQ_SLOT(socketReadyRead()) );
connect( socket, TQ_SIGNAL(error(int)),
TQ_SLOT(socketError(int)) );
// connect to the server
infoText->append( tr("Trying to connect to the server\n") );
socket->connectToHost( host, port );
}
~Client()
{
}
private slots:
void closeConnection()
{
socket->close();
if ( socket->state() == TQSocket::Closing ) {
// We have a delayed close.
connect( socket, TQ_SIGNAL(delayedCloseFinished()),
TQ_SLOT(socketClosed()) );
} else {
// The socket is closed.
socketClosed();
}
}
void sendToServer()
{
// write to the server
TQTextStream os(socket);
os << inputText->text() << "\n";
inputText->setText( "" );
}
void socketReadyRead()
{
// read from the server
while ( socket->canReadLine() ) {
infoText->append( socket->readLine() );
}
}
void socketConnected()
{
infoText->append( tr("Connected to server\n") );
}
void socketConnectionClosed()
{
infoText->append( tr("Connection closed by the server\n") );
}
void socketClosed()
{
infoText->append( tr("Connection closed\n") );
}
void socketError( int e )
{
infoText->append( tr("Error number %1 occurred\n").arg(e) );
}
private:
TQSocket *socket;
TQTextView *infoText;
TQLineEdit *inputText;
};
int main( int argc, char** argv )
{
TQApplication app( argc, argv );
Client client( argc<2 ? "localhost" : argv[1], 4242 );
app.setMainWidget( &client );
client.show();
return app.exec();
}
#include "client.moc"
|
