vb.net - Graphics.Drawstring 在 PictureBox 中看起来不错，但在 Bitmap 中看起来很糟糕

Question

我正在尝试使用 DrawString将文本写为图像，然后将其旋转 90 度。它适用于位图或直接在 PictureBox 上工作，但最大的区别在于质量。 PictureBox绘制的文字质量很好，看起来不错。当我将它绘制在图像上时，它看起来很可怕而且块状。我做了一些改变，试图让它看起来更漂亮，但它看起来并不像它应该的那么漂亮。

示例代码:

使用 Windows 窗体项目并在其上放置 2 个图片框和一个按钮，然后使用以下代码运行它以了解我的意思:

Public Class Form1
   Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

       Dim g As System.Drawing.Graphics
       g = PictureBox1.CreateGraphics

       ' x.DrawRectangle(New Pen(Brushes.White, 200), New Rectangle(0, 0, 200, 200))
       g.TranslateTransform(10.0F, 0.0F)
       g.RotateTransform(90)
       g.DrawString("MM Components", New Font("Arial", 7, FontStyle.Regular), Brushes.DarkBlue, New PointF(0, 0))

       Dim g2 As System.Drawing.Graphics
       Dim img As New Bitmap(300, 300, Drawing.Imaging.PixelFormat.Format24bppRgb)
       g2 = Graphics.FromImage(img)

       g2.SmoothingMode = Drawing2D.SmoothingMode.AntiAlias
       g2.TextRenderingHint = Drawing.Text.TextRenderingHint.AntiAliasGridFit
       g2.CompositingQuality = Drawing2D.CompositingQuality.HighQuality
       ' img.SetResolution(150, 150)

       ' x.DrawRectangle(New Pen(Brushes.White, 200), New Rectangle(0, 0, 200, 200))
       g2.TranslateTransform(10.0F, 0.0F)
       g2.RotateTransform(90)
       g2.FillRectangle(Brushes.White, 0, 0, 300, 300)
       g2.DrawString("MM Components", New Font("Arial", 7, FontStyle.Regular), Brushes.DarkBlue, New PointF(0, 0))
       PictureBox2.Image = img

      'System.Threading.Thread.Sleep(20)
   End Sub
End Class

Answer 1

这些变化似乎让它看起来不错......

    g2.SmoothingMode = Drawing2D.SmoothingMode.HighQuality
    g2.TextRenderingHint = Drawing.Text.TextRenderingHint.ClearTypeGridFit
    g2.CompositingQuality = Drawing2D.CompositingQuality.HighQuality