From Forum Nokia Wiki

ID	...	Creation date	28 January 2009
Platform	S60 3rd Edition FP1, S60 3rd Edition FP2, S60 5th Edition	Tested on devices	Emulator
Category	Qt for Symbian	Subcategory

Keywords (APIs, classes, methods, functions): QColorDialog,QColor,QPalette,QLabel

Overview

This code snippet demonstrates how to allow user to select a color of his choice and use it as either a background or foreground color in Qt for S60.

Qt provides a QColorDialog class for performing this task.

Preconditions

• Download and Install latest version Qt for Symbian - Installation packages which has links on how to install the latest version

Source File

#include "dialogcolor.h"
 
dialogcolor::dialogcolor(QWidget *parent)
    : QDialog(parent)
{
	button = new QPushButton("Select Color", this);
	connect(button, SIGNAL(clicked()), this, SLOT(setcolor()));
 
	colorLabel =new QLabel(this);
	layout = new QVBoxLayout(this);
	layout->addWidget(button);
	layout->addWidget(colorLabel);
	setLayout(layout);
}
 
dialogcolor::~dialogcolor()
{
// No need to delete any object that got a parent that is properly deleted.
}
void dialogcolor::setcolor()
{
    QColor color = QColorDialog::getColor(Qt::green, this);
    if (color.isValid())
    {	
		colorLabel->setText(color.name());
        colorLabel->setPalette(QPalette(color));
        colorLabel->setAutoFillBackground(true);
    }
}

Header File

#ifndef DIALOGCOLOR_H
#define DIALOGCOLOR_H
 
#include <QtGui/QDialog>
#include "ui_dialogcolor.h"
#include <QPushButton>
#include <QColorDialog>
#include <QLabel>
#include <QVBoxLayout>
 
class dialogcolor : public QDialog
{
    Q_OBJECT
 
public:
	dialogcolor(QWidget *parent = 0);
    ~dialogcolor();
private slots:
	void setcolor();
 
private:
	QPushButton *button;		
	QLabel *colorLabel;
	QVBoxLayout *layout;
};
 
#endif // DIALOGCOLOR_H

Screenshot

QColorDialog

QColorDialog