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using System;
using System.Runtime.InteropServices;

// Retrieving font and text metrics using C#
// http://www.cyotek.com/blog/retrieving-font-and-text-metrics-using-csharp
// Copyright © 2016 Cyotek Ltd. All Rights Reserved.


// ReSharper disable FieldCanBeMadeReadOnly.Global
// ReSharper disable InconsistentNaming

namespace GetTextMetricsDemo
{
  internal static class NativeMethods
  {
    #region Externals

    [DllImport("gdi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    public static extern bool DeleteObject(IntPtr hObject);

    [DllImport("gdi32.dll", CharSet = CharSet.Auto)]
    public static extern bool GetTextMetrics(IntPtr hdc, out TEXTMETRICW lptm);

    [DllImport("gdi32.dll", CharSet = CharSet.Auto)]
    public static extern IntPtr SelectObject(IntPtr hdc, IntPtr hgdiObj);

    #endregion

    #region Nested type: TEXTMETRICW

    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
    public struct TEXTMETRICW
    {
      public int tmHeight;

      public int tmAscent;

      public int tmDescent;

      public int tmInternalLeading;

      public int tmExternalLeading;

      public int tmAveCharWidth;

      public int tmMaxCharWidth;

      public int tmWeight;

      public int tmOverhang;

      public int tmDigitizedAspectX;

      public int tmDigitizedAspectY;

      public ushort tmFirstChar;

      public ushort tmLastChar;

      public ushort tmDefaultChar;

      public ushort tmBreakChar;

      public byte tmItalic;

      public byte tmUnderlined;

      public byte tmStruckOut;

      public byte tmPitchAndFamily;

      public byte tmCharSet;
    }

    #endregion
  }
}