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  解決されているようですが、`System.Drawing`を参照したくないのでWPFのみバージョンです。

 

  > "ＭＳＰ　明朝"

 

  "ＭＳ Ｐ明朝"じゃないですかね？

 

  <Window

  x:Class="Questions354935.MainWindow"

  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

  Width="800"

  Height="450">

  <Grid>

  <Canvas Name="canvas1" Background="LightGray" />

  <TextBlock

  FontFamily="ＭＳ Ｐ明朝"

  Foreground="Red"

  Text="XXXXX - TextBlock" FontSize="40pt" />

  </Grid>

  </Window>

  ```

 

  using System;

  using System.Globalization;

  using System.Windows;

  using System.Windows.Controls;

  using System.Windows.Interop;

  using System.Windows.Media;

  using System.Windows.Media.Imaging;

 

  namespace Questions354935

  {

  public partial class MainWindow : Window

  {

  public MainWindow()

  {

  InitializeComponent();

  TestImage();

  TestImage2();

  }

 

  private void TestImage()

  {

  //var font = new System.Drawing.Font("ＭＳＰ　明朝", 40);

  var font = new System.Drawing.Font("ＭＳ Ｐ明朝", 40);

 

  using (var bmp = new System.Drawing.Bitmap(800, 200))

  {

  bmp.SetResolution(96, 96);

  using (var g = System.Drawing.Graphics.FromImage(bmp))

  {

  g.DrawImage(bmp, 0, 0, bmp.Width, bmp.Height);

  using (var b = new System.Drawing.SolidBrush(System.Drawing.Color.Red))

  {

  g.Clear(System.Drawing.Color.Transparent/*FromArgb(212, 212, 212).*/);

  g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;

  g.DrawString("XXXXX - System.Drawing", font, b, 0, 0); // 10, 22);

  }

  }

 

  var hBmp = bmp.GetHbitmap();

  var bm = Imaging.CreateBitmapSourceFromHBitmap(

  hBmp,

  IntPtr.Zero,

  Int32Rect.Empty,

  BitmapSizeOptions.FromEmptyOptions());

 

  var img = new Image

  {

  Width = 800,

  Height = 200,

  Source = bm,

  };

  Canvas.SetTop(img, 100);

  //Canvas.SetLeft(img, 50);

 

  canvas1.Children.Add(img);

  }

  }

 

  private void TestImage2()

  {

  var text = new FormattedText("XXXXX - DrawingVisual",

  CultureInfo.CurrentCulture,

  FlowDirection.LeftToRight,

  new Typeface("ＭＳ Ｐ明朝"),

  40 * (96.0 / 72.0),

  Brushes.Red, 96);

 

  var drawingVisual = new DrawingVisual();

  var drawingContext = drawingVisual.RenderOpen();

  drawingContext.DrawText(text, new Point());

  drawingContext.Close();

 

  var bmp = new RenderTargetBitmap(800, 200, 96, 96, PixelFormats.Pbgra32);

  bmp.Render(drawingVisual);

 

  var img = new Image

  {

  Width = 800,

  Height = 200,

  Source = bmp,

  };

  Canvas.SetTop(img, 200);

  //Canvas.SetLeft(img, 50);

 

  canvas1.Children.Add(img);

  }

  }

  }

  ```

  

 

  微妙に違うのですが、なんでかはわかりません^^;