// Read: CtbFile ctb = new CtbFile("input.ctb"); // Write: ctb.WriteTo("output.ctb");

/// <summary> /// Example for using different colors for some color indexes. /// </summary> public class IndexedColorExchanger { private readonly IDictionary<short, ArgbColor> indexToColorMapping; /// <summary> /// Initializes a new instance of the <see cref="IndexedColorExchanger"/> class. /// </summary> /// <param name="colorMap">The color map, which only contains the colors indexes to be exchanged.</param> public IndexedColorExchanger(IDictionary<short, ArgbColor> colorMap) { indexToColorMapping = colorMap; } /// <summary> /// Gets the plot style. /// </summary> /// <remarks>This method can be used as a <see cref="GraphicsConfig.PlotStyleManager"/>.</remarks> /// <param name="plotPropertyOwner">The plot property owner (usually an entity).</param> /// <param name="drawContext">The draw context.</param> /// <returns>The plot style.</returns> public IPlotStyle GetPlotStyle(IPlotPropertyOwner plotPropertyOwner, DrawContext drawContext) { EntityColor entityColor = plotPropertyOwner.GetEntityColor(drawContext); if (entityColor.ColorType == ColorType.ByColorIndex) { ArgbColor substitutionColor; if (indexToColorMapping.TryGetValue(entityColor.ColorIndex, out substitutionColor)) { return new OverrideColorPlotStyle(substitutionColor, plotPropertyOwner, drawContext); } } return new DefaultPlotStyle(plotPropertyOwner, drawContext); } } /// <summary> /// Plot manager class allowing to exchange line weights by color index. /// </summary> /// <remarks> /// Use <see cref="ApplyLineWeightPlotting"/> how to prepare any /// <see cref="GraphicsConfig"/> to use exchanged line weights. /// </remarks> public class LineWeightChanger { private readonly IDictionary<short, short> indexToLineWeightMapping; /// <summary> /// Initializes a new instance of the <see cref="LineWeightChanger"/> class. /// </summary> /// <param name="indexToLineWeightMapping"> /// The exchanged line weights. /// Keys are color indices, values are exchanged line weights in 100th of mm. /// If a color index is not present in this map, the entity's effective line weight is taken. /// </param> public LineWeightChanger(IDictionary<short, short> indexToLineWeightMapping) { this.indexToLineWeightMapping = indexToLineWeightMapping; } /// <summary> /// Gets the plot style. /// </summary> /// <remarks>This method can be used as a <see cref="GraphicsConfig.PlotStyleManager"/>.</remarks> /// <param name="plotPropertyOwner">The plot property owner (usually an entity).</param> /// <param name="drawContext">The draw context.</param> /// <returns>The plot style.</returns> public IPlotStyle GetPlotStyle(IPlotPropertyOwner plotPropertyOwner, DrawContext drawContext) { EntityColor entityColor = plotPropertyOwner.GetEntityColor(drawContext); if (entityColor.ColorType == ColorType.ByColorIndex) { short substitutionLineWeight; if (indexToLineWeightMapping.TryGetValue(entityColor.ColorIndex, out substitutionLineWeight)) { switch (substitutionLineWeight) { case LineWeight.ByBlock: substitutionLineWeight = drawContext.ByBlockLineWeight; break; case LineWeight.ByLayer: DxfLayer layer = plotPropertyOwner.GetLayer(drawContext); substitutionLineWeight = layer.GetLineWeight(drawContext.Config); break; case LineWeight.Standard: substitutionLineWeight = drawContext.Config.DefaultLineWeight; break; } return new OverrideLineWeightPlotStyle(substitutionLineWeight, plotPropertyOwner, drawContext); } } return new DefaultPlotStyle(plotPropertyOwner, drawContext); } /// <summary> /// Prepare a graphics configuration which uses line weight mapping. /// </summary> /// <param name="config">The graphics configuration, unchanged.</param> /// <param name="indexToLineWeightMapping">Line weight mapping to use.</param> /// <return>Clone of <paramref name="config"/>, prepared to exchange line weights.</return> public static GraphicsConfig ApplyLineWeightPlotting(GraphicsConfig config, IDictionary<short, short> indexToLineWeightMapping) { LineWeightChanger changer = new LineWeightChanger(indexToLineWeightMapping); GraphicsConfig result = (GraphicsConfig)config.Clone(); result.PlotStyleManager = changer.GetPlotStyle; return result; } }

WW.Cad.Examples.PdfExportOptions options = new WW.Cad.Examples.PdfExportOptions(); CtbFile ctbFile = new CtbFile(@"C:\your ctb file.ctb"); options.PlotStyleProvider = ctbFile.GetPlotStyle; WW.Cad.Examples.PdfExporterExample.ExportToPdf(@"C:\your dwg file.dwg", options);