LKBEN11634: How to set an application icon for a Qt application in main.cpp.

Symptom

You need to add a nice icon to your program.

Cause

Makes programs nicer.

Solution

To set an appllication icon, you can add a resource to your application and add the following line to your main.cpp before calling mainwindow.show();

#include "mainwindow.h"

#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    a.setOrganizationName("Dataport");
    a.setApplicationName("DeviceResetTool");

    MainWindow w;
    w.setWindowIcon(QIcon(":/ResourcePrefix/Images/someicon.png")); //set icon
    w.show();
    return a.exec();
}

Please note: this is one way of doing it, you can load the icon later or load it from file. You do not need to put this line into the main.cpp etc.

Have fun.

Disclaimer:

The information provided in this document is intended for your information only. Lubby makes no claims to the validity of this information. Use of this information is at own risk!

About the Author

Author: Wim Peeters - Keskon GmbH & Co. KG

Wim Peeters is electronics engineer with an additional master in IT and over 30 years of experience, including time spent in support, development, consulting, training and database administration. Wim has worked with SQL Server since version 6.5. He has developed in C/C++, Java and C# on Windows and Linux. He writes knowledge base articles to solve IT problems and publishes them on the Lubby Knowledge Platform.

Latest update: 16/01/2023