在 SharpDX / DirectWrite 中获取 ABC 字符宽度

Question

在 GDI 中获取我会调用 GetCharABCWidths 的字符的 ABC 宽度（左方位、右方位等）。

我如何使用 SharpDX 或 DirectWrite 实现相同的测量值，我是否应该期望这与 GDI 对于相同字符的值匹配？

到目前为止我做了什么？因缺少 Direct* 和 SharpDX 的文档而迷失方向。

Answer 1

/// <summary>
///  Takes a string, text format, and associated constraints, and produces an object that represents the fully analyzed and formatted result.
/// </summary>
/// <param name="factory">an instance of <see cref="T:SharpDX.DirectWrite.Factory" /></param>
/// <param name="text">An array of characters that contains the string to create a new <see cref="T:SharpDX.DirectWrite.TextLayout" /> object from. This array must be of length stringLength and can contain embedded NULL characters.</param>
/// <param name="textFormat">A pointer to an object that indicates the format to apply to the string.</param>
/// <param name="maxWidth">The width of the layout box.</param>
/// <param name="maxHeight">The height of the layout box.</param>
/// <unmanaged>HRESULT CreateTextLayout([In, Buffer] const wchar* string,[None] UINT32 stringLength,[None] IDWriteTextFormat* textFormat,[None] FLOAT maxWidth,[None] FLOAT maxHeight,[Out] IDWriteTextLayout** textLayout)</unmanaged>
public TextLayout(Factory factory, string text, TextFormat textFormat, float maxWidth, float maxHeight)

示例代码：

using (var dwFactory = new SharpDX.DirectWrite.Factory())
{
  var textLayout = new TextLayout(dwFactory, "ABC", textFormat, float.PositiveInfinity, float.PositiveInfinity);
  var width = textLayout.Metrics.Width
  ...
}