How to add Treewidget Items when clicking on PushButton

[Lykurg]

Please also post the corresponding header file. And for a simple debug, try following in your code and show us the output:

void newproject::on_okButton_clicked()
{
  qWarning() << "on_okButton_clicked";
  if(!eclogic)
    qWarning() << "no pointer!";
eclogic->createMainTree();
}
//---
void ECLogic::createMainTree()
{
qWarning() << "createMainTree";
QTreeWidgetItem *lnx = new QTreeWidgetItem(ui->treeWidget);
lnx->setText(0,tr("LOGIC"));
ui->treeWidget->addTopLevelItem(lnx);
}

void newproject::on_okButton_clicked()
{
  qWarning() << "on_okButton_clicked";
  if(!eclogic)
    qWarning() << "no pointer!";
eclogic->createMainTree();
}
//---
void ECLogic::createMainTree()
{
qWarning() << "createMainTree";
QTreeWidgetItem *lnx = new QTreeWidgetItem(ui->treeWidget);
lnx->setText(0,tr("LOGIC"));
ui->treeWidget->addTopLevelItem(lnx);
}

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[mkkguru]

Please also post the corresponding header file. And for a simple debug, try following in your code and show us the output:

void newproject::on_okButton_clicked()
{
  qWarning() << "on_okButton_clicked";
  if(!eclogic)
    qWarning() << "no pointer!";
eclogic->createMainTree();
}
//---
void ECLogic::createMainTree()
{
qWarning() << "createMainTree";
QTreeWidgetItem *lnx = new QTreeWidgetItem(ui->treeWidget);
lnx->setText(0,tr("LOGIC"));
ui->treeWidget->addTopLevelItem(lnx);
}
 
Hi,
 
//below is the newproject.h file 
[CODE]class newproject : public QDialog
{
     Q_OBJECT
public:
     Ui::NewProject  ui;
     newproject(QWidget *parent = 0);
    ~newproject();
     ECLogic *eclogic;
 
private:
 
   newproject *NewPrjct;
 
public slots:
    void on_cancelButton_clicked();
    void on_okButton_clicked();

void newproject::on_okButton_clicked()
{
  qWarning() << "on_okButton_clicked";
  if(!eclogic)
    qWarning() << "no pointer!";
eclogic->createMainTree();
}
//---
void ECLogic::createMainTree()
{
qWarning() << "createMainTree";
QTreeWidgetItem *lnx = new QTreeWidgetItem(ui->treeWidget);
lnx->setText(0,tr("LOGIC"));
ui->treeWidget->addTopLevelItem(lnx);
}

Hi,

//below is the newproject.h file 
[CODE]class newproject : public QDialog
{
     Q_OBJECT
public:
     Ui::NewProject  ui;
     newproject(QWidget *parent = 0);
    ~newproject();
     ECLogic *eclogic;

private:

   newproject *NewPrjct;
   
public slots:
    void on_cancelButton_clicked();
    void on_okButton_clicked();

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[/CODE]

//below is the ECLogic.h

#include "newproject.h"
 
#include <QApplication>
#include <QtGui/QMainWindow>
#include <QtGui/QDialog>
 
#include <QAbstractButton>
#include <QModelIndex>
 
class ECLogic;
class NewProject;
 
/*************************
 main window(eclogic) Ui name
 *************************/
namespace Ui
{
    class ECLogicClass;
}
 
class ECLogic : public QMainWindow
{
    Q_OBJECT
 
public:
     ECLogic(QWidget *parent = 0);
    ~ECLogic();
    ECLogic *eclogic;
    void createTreewidget();
    void create4Bins();
    void createMainTree();
 
 /*************************
   main window(eclogic) actions slots
  *************************/
private slots:
    //when i click on new menu,NewProject window will open.
    void  on_action_New_triggered();
    void on_actionAdd_PLC_triggered();
private:
    /*************************
       main window objects
    *************************/
     Ui::ECLogicClass *ui;
     newproject *NewProject;
    ECLogic *eclogic;

#include "newproject.h"

#include <QApplication>
#include <QtGui/QMainWindow>
#include <QtGui/QDialog>

#include <QAbstractButton>
#include <QModelIndex>

class ECLogic;
class NewProject;

/*************************
 main window(eclogic) Ui name
 *************************/
namespace Ui
{
    class ECLogicClass;
}

class ECLogic : public QMainWindow
{
    Q_OBJECT

public:
     ECLogic(QWidget *parent = 0);
    ~ECLogic();
    ECLogic *eclogic;
    void createTreewidget();
    void create4Bins();
    void createMainTree();

 /*************************
   main window(eclogic) actions slots
  *************************/
private slots:
    //when i click on new menu,NewProject window will open.
    void  on_action_New_triggered();
    void on_actionAdd_PLC_triggered();
private:
    /*************************
       main window objects
    *************************/
     Ui::ECLogicClass *ui;
     newproject *NewProject;
    ECLogic *eclogic;

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Out put is still getting closing when i click on (Ok)pushbutton

Starting /home/th/Desktop/E.0.1/bin/EL...
on_okButton_clicked 
no pointer! 
createMainTree 
 
The program has unexpectedly finished.
 
/home/sumith/Desktop/ECIL-2.0.1/bin/ECIL exited with code 0

Starting /home/th/Desktop/E.0.1/bin/EL...
on_okButton_clicked 
no pointer! 
createMainTree 

The program has unexpectedly finished.

/home/sumith/Desktop/ECIL-2.0.1/bin/ECIL exited with code 0

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[Lykurg]

The code could not be real! The message "no pointer!" indicates that you don't have initialized eclogic! Add to your constructor

eclogic = new ECLogic;

eclogic = new ECLogic;

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And therefore I can not understand why "createMainTree" is printed out. So maybe just upload a sample project, that reproduce your problem.

[faldzip]

And therefore I can not understand why "createMainTree" is printed out.

I don't understand why this guy is trying to write an application if he does not know any programming language... He has two eclogic class members: 1 public and 1 private...

So maybe just upload a sample project, that reproduce your problem.

This won't help. I tried to understand the code of his project earlier when there was another topic, but it is impossible as this guy has incredible coding style: almost every line starts with different numbers of spaces from the left... he is using global, local and member variables with the same name which he expect to be the same one variable and so on. He has no idea about C++ programming and can't understand that using umbrella doesn't make sense if you don't know how to open it in rainy day!

[mkkguru]

I don't understand why this guy is trying to write an application if he does not know any programming language... He has two eclogic class members: 1 public and 1 private...

This won't help. I tried to understand the code of his project earlier when there was another topic, but it is impossible as this guy has incredible coding style: almost every line starts with different numbers of spaces from the left... he is using global, local and member variables with the same name which he expect to be the same one variable and so on. He has no idea about C++ programming and can't understand that using umbrella doesn't make sense if you don't know how to open it in rainy day!

Hi faldzip,

Thanks for the answering ,As iam a fresher iam in learning stage ,if you know about my issue plz help regrding this,and dont underestimate others..if i confuse you with my code l will post my project ,

thanks & regards,