C#:在文本框上使用嵌入字体 [英] C# : Using an embedded font on a textbox

问题描述

我将字体作为嵌入资源嵌入到我的 windows 窗体应用程序中，并希望在 TextBox 中使用它.

I'm embedding a font in my windows forms application as embedded resource, and want to use it in a TextBox.

AddMemoryFont() 的帮助说我必须将兼容文本渲染设置为 true 才能使用 GDI+，这样我的字体就可以使用了.但不知何故，它只是无法显示正确的字体.

The help of AddMemoryFont() says I have to set compatible text rendering to true in order to use GDI+, and so my font can then be used. But somehow it just won't display the right font.

在 Program.cs 中我明确声明:

In Program.cs I explicitly state:

Application.SetCompatibleTextRenderingDefault(true);

为什么它不起作用?有人知道如何为 TextBox 设置自定义字体吗?

So why is it not working? Anybody got a clue on how to set a custom font to a TextBox?

推荐答案

好的，多亏了互联网和 Google，我才搞清楚.

Okay, I figured it out thanks to the interwebs and Google.

为了将来参考，如果有人遇到这个问题，修复方法是:在将嵌入的字体作为流获取之后，在调用 AddMemoryFont 之前，你必须调用 AddFontMemResourceEx ！(在 C# 中不可用，因此您必须导入它:

For future reference, if anybody has this problem, the fix is : after getting your embedded font as a stream, and before calling AddMemoryFont, you have to call AddFontMemResourceEx ! (Not available in C# so you have to import it :

    [DllImport("gdi32.dll")]
    private static extern IntPtr AddFontMemResourceEx(IntPtr pbFont, uint cbFont, IntPtr pdv, [In] ref uint pcFonts);

然后:

            //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);

而且很快，您将能够使用该字体.如果没有 AddFontMemResourceEx，它将无法工作.

And presto, you'll be able to use the font. Without the AddFontMemResourceEx it wont work.

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