The drawing script is used to draw a rectangle between four points.

#region Namespaces using System; #endregion namespace ScriptCode { /// <summary> /// Drawing scripts are used for drawing a visual object. /// /// This script can be used in several ways: /// (1) It can be used on a chart by clicking the chart in order to set the drawing's anchor points. /// (2) It can be used from another script by having that script set the drawing's anchor points. /// </summary> public partial class MyDrawing : DrawingScriptBase // NEVER CHANGE THE CLASS NAME { #region Variables #endregion #region OnInitialize /// <summary> /// This function is called when a new drawing instance is created. /// </summary> /// -------------------------------------------------------------------------------------------------- /// THIS FUNCTION MUST ACCEPT THE SYMBOL INDEX PARAMETER AND SHOULD NOT ACCEPT ANY OTHER PARAMETERS. /// -------------------------------------------------------------------------------------------------- /// <param name="symbolIndex" type="Symbol">The underlying symbol index for the drawing.</param> public void OnInitialize(int symbolIndex) { // Initialize the drawing for the symbol to accept 2 anchor points. DrawingInitialize(symbolIndex, 2); } #endregion #region OnChartSetup /// <summary> /// This function is used for setting up the drawing on the chart and registering its pens (see the DrawingRegisterPen function). /// </summary> public override void OnChartSetup() { // Register the pen with which to stroke the rectangle. DrawingRegisterPen("Stroke Pen", new byte[] { 5, 110, 180, 255 }, AT_DashStyle.SOLID, 2); // Register the pen with which to fill the rectangle. DrawingRegisterPen("Fill Pen", new byte[] { 5, 110, 180, 75 }, AT_DashStyle.SOLID, 2); } #endregion #region OnDraw /// <summary> /// This function is used to draw the drawing by setting all of its anchor points, lines and labels on a virtual canvas. /// The canvas x-axis values are the date and time of the underlying symbol bars and its y-axis values are the symbol prices. /// /// The location of the drawing on the canvas is specified by the drawing anchor points, which can either be specified by /// clicking on a chart or from another script (see the Drawing functions). /// </summary> public override void OnDraw() { // Get the X value of anchor point 0. int line1X = DrawingAnchorPointBarShift(0); // Get the Y value of anchor point 0. double line1Y = DrawingAnchorPointValue(0); // Get the X value of anchor point 1. int line3X = DrawingAnchorPointBarShift(1); // Get the Y value of anchor point 1. double line3Y = DrawingAnchorPointValue(1); int line2X = line3X; double line2Y = line1Y; int line4X = line1X; double line4Y = line3Y; // Draw the polygon. DrawingSetPolygon("Stroke Pen", "Fill Pen", new int[] { line1X, line2X, line3X, line4X }, new double[] { line1Y, line2Y, line3Y, line4Y }, new string[] { "", "", "", "" }); } #endregion } }

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