QTreeWidget SIGNAL

QT:4.1.1

Hello everybody,

I am trying to call a function by clicking on a item with the signal: itemClicked()
It happens nothing beim clicking on a item. Can somebody see what is wrong:

Code:

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MainWindow::MainWindow()
 
    {
        ui.setupUi(this);
 
 
        connect(ui.tabellen_cb, SIGNAL(currentIndexChanged (int)), this, SLOT(selectTable()));
        connect(ui.actionverbinden, SIGNAL(triggered()), this, SLOT(openLoginDialog()));
        connect(ui.actionNeu, SIGNAL(triggered()), this, SLOT(insertNewRow()));
        connect(ui.abfrage_btn, SIGNAL(clicked()), this, SLOT(selectTable()));
        connect(ui.new_btn, SIGNAL(clicked()), this, SLOT(insertNewRow()));
        connect(ui.delete_btn, SIGNAL(clicked()), this, SLOT(deleteRow()));
        connect(ui.abfrage_btn, SIGNAL(clicked()), this, SLOT(addItemsToTreeWidget()));
 
 
		QTreeWidgetItem *root = new QTreeWidgetItem(ui.tree);
		QTreeWidgetItem *tables = new QTreeWidgetItem(root);
       	connect(ui.tree, SIGNAL(itemClicked (tables,0)), this, SLOT(selectTable()));
 
 
        init();
 
    }

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Code:

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void MainWindow::selectTable()
{
		/*
		QString table = ui.tabellen_cb->currentText();
		QSqlTableModel *model = new QSqlTableModel;
        model->setTable(table);
        //So kann man jeder Feld update: OnFiledChange
        model->setEditStrategy(QSqlTableModel::OnFieldChange);
        model->select();
       
 
        ui.tableView->setModel(model);
        ui.tableView->show();	
        */
        QTreeWidgetItem *root = new QTreeWidgetItem(ui.tree);
		root->setIcon(0, QIcon(QString::fromUtf8(":/images/images/database.jpg")));
		root->setText(0, "inventar");
 
		QTreeWidgetItem *tables = new QTreeWidgetItem(root);
		tables->setIcon(0, QIcon(QString::fromUtf8(":/images/images/table.jpg")));
		tables->setText(0, "tabellen");
        QString table = tables->text(0);
        	QMessageBox::information(this,"",table);
		QSqlTableModel *model = new QSqlTableModel;
        model->setTable(table);
        //So kann man jeder Feld update: OnFiledChange
        model->setEditStrategy(QSqlTableModel::OnFieldChange);
        model->select();
 
 
        ui.tableView->setModel(model);
        ui.tableView->show();	
 
}

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Code:

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void MainWindow::addItemsToTreeWidget()
{
		ui.tree->clear();
		ui.tree->setObjectName(QLatin1String("ui.tree"));
        ui.tree->setHeaderLabels(QStringList(tr("database")));
       // ui.tree->header()->setResizeMode(QHeaderView::Stretch);
 
		QTreeWidgetItem *root = new QTreeWidgetItem(ui.tree);
		root->setIcon(0, QIcon(QString::fromUtf8(":/images/images/database.jpg")));
		root->setText(0, "inventar");
 
		QTreeWidgetItem *tables = new QTreeWidgetItem(root);
		tables->setIcon(0, QIcon(QString::fromUtf8(":/images/images/table.jpg")));
		tables->setText(0, "tabellen");
 
	QSqlQuery select("select * from sysobjects where xtype = 'U' order by name");
	while(select.next())
	{
		QString tabelle = select.value(0).toString();
		//new QTreeWidgetItem(tables, tabelle, 0);
		QTreeWidgetItem *items = new QTreeWidgetItem(tables);
		items->setText(0, tabelle);
		items->setIcon(0, QIcon(QString::fromUtf8(":/images/images/table.jpg")));
 
	}      
 
}

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Code:

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connect(ui.tree, SIGNAL(itemClicked (tables,0)), this, SLOT(selectTable()))

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You can't set values in connect statements. You should use types there.

Try this:

Code:

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connect(ui.tree, SIGNAL(itemClicked (QTreeWidgetItem*,int)), this, SLOT(selectTable()))

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hi wysota!
It works like this:

Code:

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connect(ui.tree, SIGNAL(itemClicked (QTreeWidgetItem*,int)), this, SLOT(selectTable()))

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But i would like to call "selectTable()" just if i click a item of tables (not root and tables it self, but all items of tables should be able to call my function "selectTable()":

Code:

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.
.
QTreeWidgetItem *root = new QTreeWidgetItem(ui.tree);        
root->setIcon(0, QIcon(QString::fromUtf8(":/images/images/database.jpg")));        
root->setText(0, "inventar");                
QTreeWidgetItem *tables = new QTreeWidgetItem(root);
.
.

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Thats why i tryed:

Code:

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connect(ui.tree, SIGNAL(itemClicked (tables,0)), this, SLOT(selectTable()))

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Is that complex to implement? :rolleyes:

You can't use parameter values in SIGNAL macro.
You need to implement a slot for checking which item was clicked and then call selectTable() if appropriate.

Provide a custom slot which checks values of those parameters.

Code:

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void someclass::someslot(QTreeWidgetItem *item, int column){
  if(item && column==0) selectTable();
}

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Hi everybody :rolleyes:
Ok i will do that!
Is there a possibility to get my selected Item text? I found none function at QTreeWidget and QTreeWidgetItem :(
. I found just "text()".
In QT 3 i could use xx->currentText().

Its easy to get my selected text or its not possible?

Code:

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ui.tree->currentItem()->text()

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