Linear Brush: draw ellipse filled with a blue-yellow gradient

 
Imports System
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
Imports System.Drawing.Text

Public Class MainClass

   Shared Sub Main()
        Dim myform As Form = New FrmDrawShapes()
        Application.Run(myform)
   End Sub ' Main

End Class


Public Class FrmDrawShapes
   Inherits System.Windows.Forms.Form

#Region " Windows Form Designer generated code "

   Public Sub New()
      MyBase.New()

      'This call is required by the Windows Form Designer.
      InitializeComponent()

      'Add any initialization after the InitializeComponent() call

   End Sub

   'Form overrides dispose to clean up the component list.
   Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
      If disposing Then
         If Not (components Is Nothing) Then
            components.Dispose()
         End If
      End If
      MyBase.Dispose(disposing)
   End Sub

   'Required by the Windows Form Designer
   Private components As System.ComponentModel.Container

   'NOTE: The following procedure is required by the Windows Form Designer
   'It can be modified using the Windows Form Designer.  
   'Do not modify it using the code editor.
   <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
      '
      'frmDrawShapes
      '
      Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
      Me.ClientSize = New System.Drawing.Size(520, 197)
      Me.Name = "frmDrawShapes"
      Me.Text = "Drawing Shapes"

   End Sub

#End Region

   ' draw various shapes on form
   Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)

      ' references to object we will use
      Dim graphicsObject As Graphics = e.Graphics

      ' ellipse rectangle and gradient brush
      Dim drawArea1 As Rectangle = New Rectangle(5, 35, 30, 100)
      Dim linearBrush As LinearGradientBrush = _
         New LinearGradientBrush(drawArea1, Color.Blue, _
         Color.Yellow, LinearGradientMode.ForwardDiagonal)

      ' draw ellipse filled with a blue-yellow gradient
      graphicsObject.FillEllipse(linearBrush, 5, 30, 65, 100)

   End Sub ' OnPaint

End Class

1.	Make a rectangle that shades from black to white
2.	Linear Gradient Brushes: Color Blend
3.	Linear Gradient Brushes: Make a brush that makes 50 percent of the color change
4.	Linear Gradient Brushes: This brush's line is too short to cross the whole rectangle
5.	Linear Gradient Brushes: Change the brush's WrapMode
6.	Linear Gradient Brushes: Trangular brush
7.	Linear Gradient Brushes: Sigma bell shape
8.	Linear Gradient Brushes: A diagonal brush
9.	Path Gradient Brush: rectangle
10.	Fill an ellipse setting CenterColor and SurroundColors
11.	Fill an ellipse using SetBlendTriangularShape
12.	Fill an ellipse using SetSigmaBellShape
13.	Linear Gradient Brushes: Normal, Triangle, Bell and custom color
14.	Path Gradient Brushes: Diamond, Rectangle, Cirlce and quad
15.	Gradient Paint

Linear Brush: draw ellipse filled with a blue-yellow gradient : Gradient « 2D « VB.Net

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