Another quick post, as I'm just about to head back home after a long week in Boston. This post comes from a technical solution provided by Sreekar Devatha, from DevTech India.
I won't go into detail regarding the following code, but it should be fairly clear what's going on: from a particular colour-name it looks up a colour from a color-book (yes, I know I've used "colour" and "color" in the same sentence, but "color-book" is an AutoCAD term and it's hard for me to drop my u's when I don't have to, even after having lived in the US for a number of years... 🙂
Once it gets the colour, it then uses it to set the colour of an entity the user selects.
Here's the C# code:
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.Colors;
using System;
using System.ComponentModel;
using System.Globalization;
namespace ColorBookApplication
{
public class Commands
{
[CommandMethod("SC")]
static public void SetColorToRal()
{
Document doc =
Application.DocumentManager.MdiActiveDocument;
Database db = doc.Database;
Editor ed = doc.Editor;
ITypeDescriptorContext typeDes = null;
CultureInfo cult = null;
ColorConverter conv = new ColorConverter();
String str = "RAL CLASSIC$RAL 1000";
Color col = null;
try
{
// Retrieve color from color-book
col =
conv.ConvertFrom(typeDes, cult, str) as Color;
}
catch (System.Exception ex)
{
ed.WriteMessage("Exception: " + ex.Message);
}
if (col != null)
{
// Select an entity to set the retrieved color
PromptEntityResult per =
ed.GetEntity("Select an entity: ");
if (per.Status == PromptStatus.OK)
{
Transaction tr =
db.TransactionManager.StartTransaction();
using (tr)
{
try
{
Entity ent =
(Entity)tr.GetObject(
per.ObjectId,
OpenMode.ForWrite
);
// Set the color
ent.Color = col;
tr.Commit();
}
catch (Autodesk.AutoCAD.Runtime.Exception ex)
{
ed.WriteMessage("Exception: " + ex.Message);
tr.Abort();
}
}
}
}
}
}
}
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