how to add children to the QTree Widget

[ManiRon]

@mrjj sir i tried the way u mentioned but i got like this

my code:

QList<QTreeWidgetItem*>m_Data;
m_Data.append(new QTreeWidgetItem);

QString Data = 0;
for(int i=1;i<3;i++)
{
Data = QString("SubItem"+QString::number(i));
QTreeWidgetItem* item1 =new QTreeWidgetItem(ui->treeWidget);
item1->setText(0,"data1");
m_Data.append(item1);
item1->setText(0,Data.toLatin1().constData());
m_Data.append(item1);
item->addChild(item1);
item1->addChildren(m_Data);
}

[mrjj]

@ManiRon
hi
seems like blank texts. also i dont see u new item.??
anyway, that loop looks so messy and hard to read
if you use functions, it can look like this

QTreeWidgetItem * addTreeRoot(QTreeWidget* treeWidget, QString name, QString description) {
    QTreeWidgetItem *treeItem = new QTreeWidgetItem(treeWidget);
    treeItem->setText(0, name);
    treeItem->setText(1, description);
    return treeItem;
}

QTreeWidgetItem * addTreeChild(QTreeWidgetItem *parent,QString name, QString description) {
    QTreeWidgetItem *treeItem = new QTreeWidgetItem();
    treeItem->setText(0, name);
    treeItem->setText(1, description);
    parent->addChild(treeItem);
    return treeItem;
}
--

QTreeWidgetItem* root=addTreeRoot(ui->treeWidget,"ROOT","text");
addTreeChild(root,"bbbb","text");
addTreeChild(root,"ccc","text");
addTreeChild(root,"dddd","text");
QTreeWidgetItem* last=addTreeChild(root,"eeee","text");

addTreeChild(last,"eeeee","text"); // notice last as parent

[ManiRon]

@mrjj i am not getting sir,
how i will declare the these functions?

[mrjj]

@ManiRon
hi
Just paste them into cpp file. they are just free functions.

[ManiRon]

@mrjj errors came

[JonB]

@ManiRon
Look at your line #100. What in the world is the -- there?? You really ought be able to do this sort of thing for yourself....

[ManiRon]

@JonB I removed it sir, Same error coming

[JonB]

@ManiRon
So after removing the -- is still warns on line #102 with specific message "expected primary-expression before "*" token", that's what you're saying, right?

[ManiRon]

@JonB NO sir other than that all error are there

[JonB]

@ManiRon
Great, so I tell you one thing that is wrong, and you say it does not change the errors when in fact it does, and I have to guess....

Look at the very first error message line. It tells you you are still inside function on_pushButton_clicked(). Do you show us that function? No. There is nothing (else) wrong with what you have pasted, but you haven't pasted it in the correct place. Nobody is going to be able to help you on that with what you show. Good luck, I'm out.

[ManiRon]

@JonB

The whole code

void MainWindow::on_pushButton_clicked()
{
// Create new item (top level item)
QTreeWidgetItem *topLevelItem = new QTreeWidgetItem(ui->treeWidget);

// Set text for item
topLevelItem->setText(0,"Item");

// Add it on our tree as the top item.
ui->treeWidget->addTopLevelItem(topLevelItem);

// Create new item and add as child item
QTreeWidgetItem *item=new QTreeWidgetItem(topLevelItem)

 QList<QTreeWidgetItem*>m_Data;
 m_Data.append(new QTreeWidgetItem);

QString Data = 0;
QTreeWidgetItem* item1 =new QTreeWidgetItem(ui->treeWidget);
for(int i=1;i<3;i++)
{

   Data = QString("SubItem"+QString::number(i));

   item1->setText(0,"data1");
   m_Data.append(item1);
   item1->setText(0,Data.toLatin1().constData());
   m_Data.append(item1);


}

item1->addChildren(m_Data);
item->addChild(item1);

QTreeWidgetItem * addTreeRoot(QTreeWidget* treeWidget, QString name,QString description)
{
     QTreeWidgetItem *treeItem = new QTreeWidgetItem(treeWidget);
     treeItem->setText(0, name);
     treeItem->setText(1, description);
     return treeItem;
}

QTreeWidgetItem * addTreeChild(QTreeWidgetItem *parent,QString name,QString description)
{
     QTreeWidgetItem *treeItem = new QTreeWidgetItem();
     treeItem->setText(0, name);
     treeItem->setText(1, description);
     parent->addChild(treeItem);
     return treeItem;
}
QTreeWidgetItem* root=addTreeRoot(ui->treeWidget,"ROOT","text");
addTreeChild(root,"bbbb","text");
addTreeChild(root,"ccc","text");
addTreeChild(root,"dddd","text");
QTreeWidgetItem* last=addTreeChild(root,"eeee","text");

addTreeChild(last,"eeeee","text"); // notice last as parent

}

[mrjj]

@ManiRon
did u put the full functions INSIDE void MainWindow::on_pushButton_clicked() ????
it sure seems so. And that is plain wrong.
Should be OVER void MainWindow::on_pushButton_clicked()
and never, ever inside.
Look at the picture again. :)

[ManiRon]

@mrjj

I put it inside void MainWindow::on_pushButton_clicked() first . Now i removed it and pasted it over that still that error remains

[mrjj]

@ManiRon
please show the exact error

[ManiRon]

@mrjj errors solved

[ManiRon]

@ManiRon Thanks sir its working fine

[mrjj]

@ManiRon
ok super :)
Hard birth.
Using functions makes it easier to read and hopefully also easier for you
to create other tree structures.

[ManiRon]

@mrjj yes sir sure

[ManiRon]

@mrjj Working Code

QTreeWidgetItem * addTreeRoot(QTreeWidget* treeWidget, QString name,QString description)
{
QTreeWidgetItem *treeItem = new QTreeWidgetItem(treeWidget);
treeItem->setText(0, name);
treeItem->setText(1, description);
return treeItem;
}

QTreeWidgetItem * addTreeChild(QTreeWidgetItem *parent,QString name,QString description)
{
QTreeWidgetItem *treeItem = new QTreeWidgetItem();
treeItem->setText(0, name);
treeItem->setText(1, description);
parent->addChild(treeItem);
return treeItem;
}

void MainWindow::on_pushButton_clicked()
{

QTreeWidgetItem* root= addTreeRoot(ui->treeWidget,"ROOT","text");

addTreeChild(root,"bbbb","text");
addTreeChild(root,"ccc","text");
addTreeChild(root,"dddd","text");
QTreeWidgetItem* last = addTreeChild(root,"eeee","text");

addTreeChild(last,"eeeee","text"); // notice last as parent

}