Vb.net PictureBox-给定坐标内的不透明度绘制

我有一个Picturebox，里面我想画一个给定坐标的确定区域（不透明度不完全隐藏绘制区域）

到目前为止，当用户单击picturebox时，我得到了“IF”语句，它检查是否是具有正确坐标的区域：

If LocalMousePosition.X >= 87 And LocalMousePosition.X <= 131 And LocalMousePosition.Y >= 5 And LocalMousePosition.Y <= 55 Then

            Label1.Text = "coordinate correct"
        Else
            Label1.Text = ""

End If

如果LocalMousePosition.X>=87且LocalMousePosition.X=5且LocalMousePosition.Y请尝试以下操作

Public Class Form1

    Private InTarget As Boolean = False
    Private Target As New Rectangle(New Point(87, 5), New Size(45, 51))

    Private Sub PictureBox1_Click(sender As System.Object, e As System.EventArgs) Handles PictureBox1.Click
        Dim clientCoords As Point = PictureBox1.PointToClient(Cursor.Position)
        InTarget = Target.Contains(clientCoords)
        Label1.Text = IIf(InTarget, "coordinate correct", "")
        PictureBox1.Refresh()
    End Sub

    Private Sub PictureBox1_Paint(sender As Object, e As System.Windows.Forms.PaintEventArgs) Handles PictureBox1.Paint
        If InTarget Then
            Using highlight As New SolidBrush(Color.FromArgb(128, Color.Yellow)) ' 0 to 255
                e.Graphics.FillRectangle(highlight, Target)
            End Using
        End If
    End Sub

End Class


哇，你真是个天才，你又帮我找到了解决办法！你在这个问题上也帮了我，非常感谢！那很好。别担心。我不记得你在什么声誉级别可以做特定的事情。