WPF字形不正确地显示度符号

Question

我正在做一些自定义控件，并通过Glyph运行绘制了一些文本

我的问题是，°C没有被我的字形正确地呈现出来(不管字体系列如何)，如下所示：

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因此，我用于字形运行的代码(简化)是：

var typeface = new Typeface(this.FontFamily, this.FontStyle, this.FontWeight, this.FontStretch);

...

GlyphRun glyphRun = CreateGlyphRun(typeface, "°C", 10, new Point(0,0));
dc.DrawGlyphRun(brush, glyphRun);

哪里

internal static GlyphRun CreateGlyphRun(Typeface typeface, string text, double size, Point origin)
{
    if (text.Length == 0)
        return null;

    GlyphTypeface glyphTypeface;

    typeface.TryGetGlyphTypeface(out glyphTypeface)

    var glyphIndexes = new ushort[text.Length];
    var advanceWidths = new double[text.Length];

    for (int n = 0; n < text.Length; n++)
    {
        var glyphIndex = (ushort)(text[n] - 29);
        glyphIndexes[n] = glyphIndex;
        advanceWidths[n] = glyphTypeface.AdvanceWidths[glyphIndex] * size;
    }

    var glyphRun = new GlyphRun(glyphTypeface, 0, false, size, glyphIndexes, origin, advanceWidths, null, null,
                                null,
                                null, null, null);
    return glyphRun;
}

我想这是个本地化的问题。任何帮助都将不胜感激。

Answer 1

试着取代

var glyphIndex = (ushort)(text[n] - 29);

使用

var glyphIndex = glyphTypeface.CharacterToGlyphMap[text[n]];

Answer 2

不如用Glyphs class代替？使用时，学位标志将显示：

<Glyphs FontUri="C:\WINDOWS\Fonts\SegoeUI.TTF" FontRenderingEmSize="80" 
    StyleSimulations="BoldSimulation" UnicodeString="It's 30°C" 
    Fill="Black" HorizontalAlignment="Center" VerticalAlignment="Center" />

​

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