Font Embedding to TextBox

I have successfully loaded a .ttf font. Now, how do I use it in a TextBox?

FILE: MainWindow.xaml.cs

Code:

namespace myNameSpace
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
		public MainWindow()
		{
			InitializeComponent();
			LoadFont();
		}

		[DllImport("gdi32.dll")]
		private static extern IntPtr AddFontMemResourceEx(IntPtr pbFont, uint cbFont, IntPtr pdv, [In] ref uint pcFonts);
		PrivateFontCollection mFontCollection = new PrivateFontCollection();
		private void LoadFont()
		{
			// specify embedded resource name
			string resource = "myNameSpace.fixedsys.ttf";
			// receive resource stream
			Stream fontStream = Assembly.GetExecutingAssembly().GetManifestResourceStream(resource);
			//create an unsafe memory block for the data         
			System.IntPtr data = Marshal.AllocCoTaskMem((int)fontStream.Length);         
			//create a buffer to read in to         
			Byte[] fontData = new Byte[fontStream.Length];         
			//fetch the font program from the resource         
			fontStream.Read(fontData, 0, (int)fontStream.Length);         
			//copy the bytes to the unsafe memory block         
			Marshal.Copy(fontData, 0, data, (int)fontStream.Length);          
			// We HAVE to do this to register the font to the system (Weird .NET bug !)         
			uint cFonts = 0;         
			AddFontMemResourceEx(data, (uint)fontData.Length, IntPtr.Zero, ref cFonts);          
			//pass the font to the font collection         
			mFontCollection.AddMemoryFont(data, (int)fontStream.Length);
			//close the resource stream
			fontStream.Close();         
			//free the unsafe memory         
			Marshal.FreeCoTaskMem(data); 
		}
	}
}

FILE: MainWindow.xaml

Code:

<Window x:Class="myNameSpace.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Hello World" Height="768" Width="1366" Loaded="Window_Loaded" Closed="Window_Closed">
    <Grid Background="Black">
	
		<TextBox 
			x:Name="OutputWindow_TEST"
			TextWrapping="Wrap"
			HorizontalScrollBarVisibility="Auto"
			VerticalScrollBarVisibility="Auto"
			Background="Black" 
			Foreground="White"
			Width="338"
		/>
	</Grid>
</Window>

So, in my "OutputWindow_TEST" textbox, how do I add my embedded font?

I type the "FontFamily" property of the textbox and all my system fonts show up as options, but not the one I embedded.

Thanks.

I'd say you need to assign a FontFamily from the Families property of your collection to your textblock's FontFamily property. You will get no Intellisense in XAML for something you will only have loaded at runtime.

Originally Posted by nvoigt

I'd say you need to assign a FontFamily from the Families property of your collection to your textblock's FontFamily property. You will get no Intellisense in XAML for something you will only have loaded at runtime.

Okay, so I add:

Code:

this.myTextBox.FontFamily = mFontCollection.Families[0];

And get this error:
error CS0029: Cannot implicitly convert type 'System.Drawing.FontFamily' to 'System.Windows.Media.FontFamily'

When I debug mFontCollection.Families[0], sure enough, it contains:
Name:
((System.Drawing.Text.FontCollection)(mFontCollect ion)).Families[0].Name
Value:
"FixedsysTTF"

So I know it's getting loaded correctly.


Any ideas where I'm messing up?

Thanks.

If your font is known at compile-time, you may want to look at this MSDN page instead of loading it with an old windows forms method.