Problem showing a symbol from a custom font

Mc_Topaz

I have a custom font. The font contains symbols at specific addresses. I want to display one of the symbols in a TextBlock. The font (ttf-file) is located in my applications's folder: Fonts. I have included the font in the application and set the BuildAction to Resource. I have verified the font's name (not file name) to reference it in my code. I have verified which "address" the symbol should be fetched from in the font. I have tried this both in XAML and with C#. But it won't work. XAML

        <Setter Property="TextElement.FontFamily" Value="pack://application:,,,/Main;component/Fonts/#MyFont" />

Notice: Never mind the space in the middle of "address" for the first and second TextBlock. The code-view here at CodeProject failes to display the address. It tries, and fails, to fetch the correct symbols by that address - if I remove the space in the addresses... C# Here is the handler for the Loaded event:

private void Window_Loaded(object sender, RoutedEventArgs e)
{
txt1.FontFamily = new FontFamily("pack://application:,,,/Main;component/Fonts/#MyFont");
txt1.Text = "\xe905";

txt2.FontFamily = new FontFamily("Segoe MDL2 Assets");
txt2.Text = "\\xe7777";

}

Result The result are displayed in the four TextBlocks. From top to bottom: * First: This fails. I get an empty rectangle, like these rectangles. * Second: This line works. You should be able to copy this line into your own application with success. * Third: Same as the first TextBlock. An empty rectangle. *

Richard Deeming

As far as I can see, you can't use a full pack: URI to reference an embedded font:

Packaging Fonts with Applications - WPF .NET Framework | Microsoft Docs[^]:

In order to reference font resource items from code, you must supply a two-part font resource reference: the base uniform resource identifier (URI); and the font location reference.

If it's a single application, try using ./Fonts/#MyFont from XAML, and new FontFamily(new Uri("pack://application:,,,/Fonts/"), "./#MyFont") from code.

"These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer

Mc_Topaz

Thanks for the reply. Unfortunately it didn't work. Changing the syntax for the reference of the Font didn't solve the problem. Thanks for suggesting that anyway. It was worth a try. For this question I have created a simple application where the Fonts are stored in the same project as my executable. I can reproduce the error in this small application for myself and to post in this forum. In my real project I have all this is in a WPF User Control Library. That is way I have the exact path to the font with the assembly reference.

Lost User

Show the code you tried; maybe you didn't get it right.

It was only in wine that he laid down no limit for himself, but he did not allow himself to be confused by it. ― Confucian Analects: Rules of Confucius about his food

Mc_Topaz

I have tried this:

    <Setter Property="TextElement.FontFamily" Value="pack://application:,,,/Main;component/Fonts/#MyFont" />

<Setter Property="TextElement.FontFamily" Value="./Fonts/#MyFont" />

./Fonts/#MyFont

In the code, I have tried these different ways to set the FontFamily property. I have just listed them here. But have run them separately. All failed...

private void Window_Loaded(object sender, RoutedEventArgs e)
{
txt1.FontFamily = new FontFamily("pack://application:,,,/Main;component/Fonts/#MyFont");
txt1.FontFamily = new FontFamily(new Uri("pack://application:,,,/Fonts/"), "./#MyFont");
txt1.FontFamily = new FontFamily("MyFont");
txt1.Text = "\xe905";
}

Notice the txt1.FontFamily = new FontFamily("MyFont"); I have installed the font from it's ttf-file. If I open the Character map application in Windows I can see all symbols that I require. I just can't understand what is going on...

Mc_Topaz

I have solved it! It was the darn TTF-file which was the problem. When I changed to another font, the XAML-code worked straight away!

Lost User

What does setting FontFamily "3 times" accomplish? (Doesn't work as an example of what you tried in Richard's case)

txt1.FontFamily = new FontFamily("pack://application:,,,/Main;component/Fonts/#MyFont");
txt1.FontFamily = new FontFamily(new Uri("pack://application:,,,/Fonts/"), "./#MyFont");
txt1.FontFamily = new FontFamily("MyFont");

See what this does for you (re: installed fonts): [How to: Enumerate Installed Fonts - Windows Forms .NET Framework | Microsoft Docs](https://docs.microsoft.com/en-us/dotnet/desktop/winforms/advanced/how-to-enumerate-installed-fonts?view=netframeworkdesktop-4.8) [How to: Enumerate System Fonts - WPF .NET Framework | Microsoft Docs](https://docs.microsoft.com/en-us/dotnet/desktop/wpf/advanced/how-to-enumerate-system-fonts?view=netframeworkdesktop-4.8)

It was only in wine that he laid down no limit for himself, but he did not allow himself to be confused by it. ― Confucian Analects: Rules of Confucius about his food