How to Change QMessageBox Icon and Title

Question

I am creating a ui app with Qt c++.

I have a error message that I have created by using QMessageBox Class like :

QMessageBox errorMessage;
errorMessage.critical(0, "Error", "An error has occured !");
errorMessage.setFixedSize(500, 200);

It is like:

And I want to change the red circled things which are the icon and the title.

I would appreciate any help.

Thanks in advance.

http://doc.qt.io/qt-5/qmessagebox.html#icon-prop, http://doc.qt.io/qt-5/qmessagebox.html#iconPixmap-prop — agent_bean, Jul 02 '18 at 07:01
I have already checked the documentation before asking the question, I would be glad if you can provide me with a working code snippet because it is not working when I use setIcon or setWindowIcon or setPixmap etc. — BUY, Jul 02 '18 at 07:07

score 6 · Accepted Answer · answered Jul 02 '18 at 07:07

6

However you can use of QMessageBox::critical(0, "Error", "An error has occured !"); because critical(...) method is static and theres no need for create an instance of QMessageBox.

Use bellow code :

QMessageBox mb("Application Name",
                           "Hardware failure.\n\nDisk error detected\nDo you want to stop?",
                           QMessageBox::NoIcon,
                           QMessageBox::Yes | QMessageBox::Default,
                           QMessageBox::NoButton,
                           QMessageBox::NoButton);

QPixmap exportSuccess("/media/msi/Information/Pictures/Icons/Icons Pack/PNG/48X48/about.png");
mb.setIconPixmap(exportSuccess);
mb.exec();

This example work 100%

answered Jul 02 '18 at 07:07

BattleTested_закалённый в бою

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Thanks!, it worked like a charm. But your exportSuccess part is the icon that is the blue circled 'i' at your example. – BUY Jul 02 '18 at 07:14
@BerkUtkuYenisey your welcome, yes you can change it arbitrary with your icon. – BattleTested_закалённый в бою Jul 02 '18 at 07:15
No I have done that already :D. But which part of the code should I change to change the Icon that I have encircled with red pen at my example.(That is near the application Name)? – BUY Jul 02 '18 at 07:16
@BerkUtkuYenisey its very simple, just add `QPixmap` then call `setIconPixmap` from your `QMessageBox` instance, finally call `exec` method from it. – BattleTested_закалённый в бою Jul 02 '18 at 07:26

score 4 · Answer 2 · answered Dec 03 '20 at 05:39

If you want to set the icon for every window you can do so globally with this:

QApplication::setWindowIcon(QIcon(":/GuiMain/gh_resource/GH Icon.ico"));

You also aren't required to use pixmap in my experience, you can use:

mb.setWindowIcon(QIcon(":/path/to/icon.ico"));

This will work on individual message boxes, just add your custom icon to your .qrc file

score 3 · Answer 3 · answered Jul 02 '18 at 21:09

3

Simply you can set Icon for your Application it will automatically set on your MessegeBox

answered Jul 02 '18 at 21:09

Dnyaneshwar

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How to Change QMessageBox Icon and Title

3 Answers3