ColorBlend Constructors

Definition

Namespace:

System.Drawing.Drawing2D

Assembly:

System.Drawing.Common.dll

Initializes a new instance of the ColorBlend class.

Overloads

ColorBlend()	Initializes a new instance of the ColorBlend class.
ColorBlend(Int32)	Initializes a new instance of the ColorBlend class with the specified number of colors and positions.

ColorBlend()

Initializes a new instance of the ColorBlend class.

public:
 ColorBlend();

public ColorBlend ();

Public Sub New ()

Examples

The following example is intended to be used in a Windows Forms environment. It demonstrates how to use the ColorBlend class in conjunction with the LinearGradientBrush class to draw an ellipse to screen that has its colors blended. The ellipse is green on the left, blends to yellow, then to blue, and finally to red on the right. This is accomplished through the settings in the myColors and myPositions arrays used in the Colors and Positions properties. Note that the InterpolationColors property of the LinearGradientBrush object named lgBrush2 must be made equal to the ColorBlend object myBlend.

protected:
   virtual void OnPaint( PaintEventArgs^ e ) override
   {
      //Draw ellipse using ColorBlend.
      Point startPoint2 = Point(20,110);
      Point endPoint2 = Point(140,110);
      array<Color>^ myColors =
            {Color::Green,Color::Yellow,Color::Yellow,Color::Blue,Color::Red,Color::Red};
      array<Single>^myPositions = {0.0f,.20f,.40f,.60f,.80f,1.0f};
      ColorBlend^ myBlend = gcnew ColorBlend;
      myBlend->Colors = myColors;
      myBlend->Positions = myPositions;
      LinearGradientBrush^ lgBrush2 =
            gcnew LinearGradientBrush( startPoint2,endPoint2,Color::Green,Color::Red );
      lgBrush2->InterpolationColors = myBlend;
      Rectangle ellipseRect2 = Rectangle(20,110,120,80);
      e->Graphics->FillEllipse( lgBrush2, ellipseRect2 );
   }

protected override void OnPaint(PaintEventArgs e)
{
             
    //Draw ellipse using ColorBlend.
    Point startPoint2 = new Point(20, 110);
    Point endPoint2 = new Point(140, 110);
    Color[] myColors = {Color.Green,
                           Color.Yellow,
                           Color.Yellow,
                           Color.Blue,
                           Color.Red,
                           Color.Red};
    float[] myPositions = {0.0f,.20f,.40f,.60f,.80f,1.0f};
    ColorBlend myBlend = new ColorBlend();
    myBlend.Colors = myColors;
    myBlend.Positions = myPositions;
    LinearGradientBrush lgBrush2 = new LinearGradientBrush(startPoint2,
        endPoint2,
        Color.Green,
        Color.Red);
    lgBrush2.InterpolationColors = myBlend;
    Rectangle ellipseRect2 = new Rectangle(20, 110, 120, 80);
    e.Graphics.FillEllipse(lgBrush2, ellipseRect2);
}

Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs)
    ' Draw ellipse using ColorBlend.
    Dim startPoint2 As New Point(20, 110)
    Dim endPoint2 As New Point(140, 110)
    Dim myColors As Color() = {Color.Green, Color.Yellow, _
    Color.Yellow, Color.Blue, Color.Red, Color.Red}
    Dim myPositions As Single() = {0.0F, 0.2F, 0.4F, 0.6F, 0.8F, 1.0F}
    Dim myBlend As New ColorBlend
    myBlend.Colors = myColors
    myBlend.Positions = myPositions
    Dim lgBrush2 As New LinearGradientBrush(startPoint2, endPoint2, _
    Color.Green, Color.Red)
    lgBrush2.InterpolationColors = myBlend
    Dim ellipseRect2 As New Rectangle(20, 110, 120, 80)
    e.Graphics.FillEllipse(lgBrush2, ellipseRect2)
End Sub

ColorBlend(Int32)

Initializes a new instance of the ColorBlend class with the specified number of colors and positions.

public:
 ColorBlend(int count);

public ColorBlend (int count);

new System.Drawing.Drawing2D.ColorBlend : int -> System.Drawing.Drawing2D.ColorBlend

Public Sub New (count As Integer)

Parameters

count

Int32

The number of colors and positions in this ColorBlend.

Examples

For an example see ColorBlend