How to embed a custom font in my application

Question

I want to add a custom font to my application, and I have already added to my resource file.

And my code as the following:

int id = QFontDatabase::addApplicationFont(":/fonts/ae_AlMateen.ttf");
QMessageBox::information(this,"Message",QString::number(id));

---

Also the content of .qrc file.

<RCC>
    <qresource prefix="/fonts">
        <file alias="ae_AlMateen">ae_AlMateen.ttf</file>
    </qresource>
</RCC>

But the problem is that the addApplicationFont always returns -1.

Note that when change the :/fonts/ae_AlMateen.ttf to direct path ex:C://ae_AlMateen.ttf it works fine.

I want the font file to be integrated with my application executable file, in order to make the application does not need to attach the font file with it.

Answer 1

Ahhh... now, after you added your .qrc, I understand. Easy to explain:

<file alias="ae_AlMateen">ae_AlMateen.ttf</file>

You added an alias in your .qrc file. If you remove alias="ae_AlMateen" it will work as we all expected... with .ttf extension.

Answer 2

If you are using qml also, you can load font in qml file in this way. I recommend it.

And if you still want to load font from cpp file, please read this article, it may help you.

Edit: The following code can work on Qt5.4.1 on OSX10.10. (The font is embedded in executable file)

int id = QFontDatabase::addApplicationFont(":/fonts/fontawesome-webfont.ttf");
QMessageBox::information(NULL,"Message",QString::number(id));  // this shows id is 0.

QFont font;
font.setFamily("FontAwesome");
font.setPointSize(30);
ui->commandLinkButton->setFont(font);
ui->commandLinkButton->setText("\uf021"); // this shows the Refresh icon.

Edit2: I made another test on Win7 with Qt5.4.1(msvc2013 64bit). The font is embedded in the exe file. Everything works fine.