cannot write to QListWidget or QLineEdit

[landonmkelsey]

Thanks I'll try that !

Strange that QApplication:rocessEvents(); didn't help!

getting a message from qtcentre but it states that popup blocker is the problem.

I think I have the code as you recommended. Still doesn't work!

The tcp/ip section still works under the cover of the gui.

BTW the gui features (close, etc) are also locked up!

Can't be far from success!

The Qt documentation example for QThread uses run().

//                                                      tcpip.h
#ifndef TCPIP_H
#define TCPIP_H
#include <QThread>
#include <QtGui/QWidget>
#include "ui_tcpip.h"
class tcpip_client;
class tcpip : public QWidget
{
    Q_OBJECT
 
public:
    tcpip(QWidget *parent = 0);
    ~tcpip();
 
private:
    Ui::tcpipClass ui;
    ushort port;
private slots:
  void StartTCPServer();
  void StartTCPClient();
  void str_client(tcpip_client* tcpip_x,  Ui::tcpipClass ui);
  void currChanged(QWidget*);
};
class tcpipThread : public QThread
{
	 Ui::tcpipClass ui;
	 ushort port;
public:
	 tcpipThread( Ui::tcpipClass uiparm, unsigned portParam):ui(uiparm),port(portParam)
	 {}
	 void run(){}
     void start();
};
 
#endif // TCPIP_H
 
//                               tcpip.cpp
 
#include "tcpip.h"
#include "tcpip_server.cpp"
#include "tcpip_client.cpp"
#include <iostream>
//#include <QtDebug>
tcpip::tcpip(QWidget *parent)
    : QWidget(parent)
{
	ui.setupUi(this);
	connect( ui.pushButtonStartTCPServer, SIGNAL(clicked()), this, SLOT(StartTCPServer()) );
	connect( ui.pushButtonStartTCPClient, SIGNAL(clicked()), this, SLOT(StartTCPClient()) );
 
     ui.listWidgetServer->addItem(QString("server constructor"));
 
}
 
tcpip::~tcpip()
{
}
void tcpip::StartTCPServer()
{
	   ui.listWidgetServer->addItem(QString("server StartTCPServer"));
 
	//    QApplication::processEvents();
		bool ok = true;
		QString qstr = ui.lineEditTCPIPServerPortServer->text();
		port = qstr.toInt(&ok);
		//qDebug()<<" server port "<<port;
		ui.lineEditServerStatus->setText("server started");
 
		QApplication::processEvents();
 
	tcpipThread tcpipThreadStart(ui, port);
	tcpipThreadStart.start();
	//      tcpipThreadStart.wait(ULONG_MAX);
 
}
void tcpip::StartTCPClient()
{
    ui.listWidgetClient->addItem(QString("client StartTCPClient"));
	bool ok = true;
	QString qstr = ui.lineEditTCPIPServerPortClient->text();
 
	//QApplication::processEvents();
	ushort port = qstr.toInt(&ok);
	//qDebug()<<"client port = "<<port;
    tcpip_client* p_client = new tcpip_client((int)19999,port,FALSE, ui);
 
    str_client(p_client, ui); /* process the request */
    close();
}
//
#define MAXLINE 512
 
// str_client is the client processing program
// particular to the application and depends on
// what the server is doing
void tcpip::str_client(tcpip_client* tcpip_x,  Ui::tcpipClass ui)
{
        int     n;
        char    sendline[MAXLINE], recvline[MAXLINE + 1];
        bool done=FALSE;
        while (!done)
        {
                cout<<"enter keyboard string"<<endl;
                cin.getline(sendline,256);
                n = strlen(sendline);
                if(n==0) break;
                sendline[n] = '\n';     /* newline terminate */
                sendline[n+1] = 0;      /* newline terminate */
                n++;
        // use our client object to write to the server
                ui.listWidgetClient->addItem(QString("client constructorstr_client"));
                tcpip_x->tcp_write(sendline,n);
                cout<<"sendline:"<<sendline<<endl;
                /*
                 * Now read a line from the socket and write it to
                 * our standard output.
                 */
 
                n = tcpip_x->tcp_read(recvline);
                recvline[n] = '\n';     /* null terminate */
                recvline[n+1] = 0;      /* null terminate */
                n++;
                cout<<"bytes received "<<n;
                cout<<"client received:echo = "<<recvline<<endl;
        }
 
}
void tcpip::currChanged(QWidget*){};
 
void tcpipThread::start()
{
	    tcpip_server* p_serv = new tcpip_server((int)19999,port,tcpip_server::str_echo, ui);
	             qDebug()<<"oops...back from CTOR";
	    delete p_serv;
}

//                                                      tcpip.h
#ifndef TCPIP_H
#define TCPIP_H
#include <QThread>
#include <QtGui/QWidget>
#include "ui_tcpip.h"
class tcpip_client;
class tcpip : public QWidget
{
    Q_OBJECT

public:
    tcpip(QWidget *parent = 0);
    ~tcpip();

private:
    Ui::tcpipClass ui;
    ushort port;
private slots:
  void StartTCPServer();
  void StartTCPClient();
  void str_client(tcpip_client* tcpip_x,  Ui::tcpipClass ui);
  void currChanged(QWidget*);
};
class tcpipThread : public QThread
{
	 Ui::tcpipClass ui;
	 ushort port;
public:
	 tcpipThread( Ui::tcpipClass uiparm, unsigned portParam):ui(uiparm),port(portParam)
	 {}
	 void run(){}
     void start();
};

#endif // TCPIP_H

//                               tcpip.cpp

#include "tcpip.h"
#include "tcpip_server.cpp"
#include "tcpip_client.cpp"
#include <iostream>
//#include <QtDebug>
tcpip::tcpip(QWidget *parent)
    : QWidget(parent)
{
	ui.setupUi(this);
	connect( ui.pushButtonStartTCPServer, SIGNAL(clicked()), this, SLOT(StartTCPServer()) );
	connect( ui.pushButtonStartTCPClient, SIGNAL(clicked()), this, SLOT(StartTCPClient()) );

     ui.listWidgetServer->addItem(QString("server constructor"));

}

tcpip::~tcpip()
{
}
void tcpip::StartTCPServer()
{
	   ui.listWidgetServer->addItem(QString("server StartTCPServer"));
	    
	//    QApplication::processEvents();
		bool ok = true;
		QString qstr = ui.lineEditTCPIPServerPortServer->text();
		port = qstr.toInt(&ok);
		//qDebug()<<" server port "<<port;
		ui.lineEditServerStatus->setText("server started");
		
		QApplication::processEvents();
		
	tcpipThread tcpipThreadStart(ui, port);
	tcpipThreadStart.start();
	//      tcpipThreadStart.wait(ULONG_MAX);
 
}
void tcpip::StartTCPClient()
{
    ui.listWidgetClient->addItem(QString("client StartTCPClient"));
	bool ok = true;
	QString qstr = ui.lineEditTCPIPServerPortClient->text();

	//QApplication::processEvents();
	ushort port = qstr.toInt(&ok);
	//qDebug()<<"client port = "<<port;
    tcpip_client* p_client = new tcpip_client((int)19999,port,FALSE, ui);

    str_client(p_client, ui); /* process the request */
    close();
}
//
#define MAXLINE 512

// str_client is the client processing program
// particular to the application and depends on
// what the server is doing
void tcpip::str_client(tcpip_client* tcpip_x,  Ui::tcpipClass ui)
{
        int     n;
        char    sendline[MAXLINE], recvline[MAXLINE + 1];
        bool done=FALSE;
        while (!done)
        {
                cout<<"enter keyboard string"<<endl;
                cin.getline(sendline,256);
                n = strlen(sendline);
                if(n==0) break;
                sendline[n] = '\n';     /* newline terminate */
                sendline[n+1] = 0;      /* newline terminate */
                n++;
        // use our client object to write to the server
                ui.listWidgetClient->addItem(QString("client constructorstr_client"));
                tcpip_x->tcp_write(sendline,n);
                cout<<"sendline:"<<sendline<<endl;
                /*
                 * Now read a line from the socket and write it to
                 * our standard output.
                 */

                n = tcpip_x->tcp_read(recvline);
                recvline[n] = '\n';     /* null terminate */
                recvline[n+1] = 0;      /* null terminate */
                n++;
                cout<<"bytes received "<<n;
                cout<<"client received:echo = "<<recvline<<endl;
        }

}
void tcpip::currChanged(QWidget*){};

void tcpipThread::start()
{
	    tcpip_server* p_serv = new tcpip_server((int)19999,port,tcpip_server::str_echo, ui);
	             qDebug()<<"oops...back from CTOR";
	    delete p_serv;
}

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