How to display the information inside a QComboBox?

[mkhpad]

Hi,
I am new to Qt and I have created a QComboBox which consists of 5 items inside it.

What i am looking for is if the user clicks anyone of those items for example:if the user clicks the first item the page should drop down and displays the information about the first item.Hope everyone understood what i am trying to say.

Can anyone say me what is the next step i need to do so that i can get displayed the information..?
Here is my code:

#include "mainwindow.h"

#include <QtGui/QApplication>
#include<QComboBox>
#include<QHBoxLayout>



int main(int argc, char *argv[])
{
QApplication app(argc, argv);

QWidget *win =new QWidget;
QHBoxLayout *layout = new QHBoxLayout;
QComboBox *combo = new QComboBox();


combo->addItem("A");
combo->addItem("B");
combo->addItem("C");
combo->addItem("D");

layout->addWidget(combo);
win->setLayout(layout);
win->showMaximized();

return app.exec();
}

I am getting the combobox displayed with the 4 items which i had declared.I need to hold some information in A,B,C,D list items.

How to create information in list items and how to display those when clicked on anyone of those items?

Waiting for the reply.

Regards,
Harish.

[hamideh_tavakoli]

Hi
you can use the signal currentIndexChanged(int), that give you index of current row. and then set tooltip for this row.

connect(combo, SIGNAL(currentIndexChanged(int)), this, SLOT(setItemToolTip(int)));

void seItemToolTip(int index)
{
combo->setToolTip(tr("It is row %1.").arg(index));
}

[rahulvala]

You have not used signal and slot , try to implement it with label.

How to use QComboBox

regards,
rahul

[mkhpad]

I tried using Qlabel but i am expecting when anyone of those items is selected/clicked it must dropdown and display some text in the form of information and not in a label.

[savaj]

What about ToolTips as mentioned in #2?

[mkhpad]

I tried using setToolTip and i dont know when and where to use?Could you help me?I have tried in this way am i correct if wrong guide me..!

combo->addItem("A");


combo->addItem("B");


combo->addItem("C");


combo->setToolTip(QObject::tr("Here comes A").arg(0));
combo->setToolTip(QObject::tr("Here comes B").arg(1));
combo->setToolTip(QObject::tr("Here comes C"). arg(2));
QObject::connect(combo, SIGNAL(currentIndexChanged(int)),, SLOT(setItemToolTip(int)));

[Fuzzbender]

AFAIK, tooltips don't work in Qt/Symbian: https://bugreports.qt.nokia.com/browse/QTBUG-9028

[mkhpad]

Hi,
Could you say me in my code where i have to use this tooltip?Where i have to enter the text which i like to enter?

[mkhpad]

Hi,
I dont want to use tooltip because i am expecting for nly if the user clicks the item it should display a paragraph of text about it in a dropdown box and not as a tool tip.