怎么通过选择来过滤动态块的线性参数？
动态块内的线性参数想通过选择过滤后赋值，但是找不到过滤参数，请问动态块的线性参数怎么过滤？AddAllowedClass怎么过滤？using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.Runtime;
namespace DYCS_20200302
{
public class Commands
{
static public void DynamicBlockProps()
{
Document doc =
Application.DocumentManager.MdiActiveDocument;
Database db = doc.Database;
Editor ed = doc.Editor;
PromptStringOptions pso =
new PromptStringOptions(
"\nEnter dynamic block name or enter to select: "
);
pso.AllowSpaces = true;
PromptResult pr = ed.GetString(pso);
if (pr.Status != PromptStatus.OK)
return;
Transaction tr =
db.TransactionManager.StartTransaction();
using (tr)
{
BlockReference br = null;
// If a null string was entered allow entity selection
if (pr.StringResult == "")
{
// Select a block reference
PromptEntityOptions peo =
new PromptEntityOptions(
"\nSelect dynamic block reference: "
);
peo.SetRejectMessage("\nEntity is not a block.");
peo.AddAllowedClass(typeof(BlockReference), false);
PromptEntityResult per =
ed.GetEntity(peo);
if (per.Status != PromptStatus.OK)
return;
// Access the selected block reference
br =
tr.GetObject(
per.ObjectId,
OpenMode.ForRead
) as BlockReference;
}
else
{
// Otherwise we look up the block by name
BlockTable bt =
tr.GetObject(
db.BlockTableId,
OpenMode.ForRead) as BlockTable;
if (!bt.Has(pr.StringResult))
{
ed.WriteMessage(
"\nBlock \"" + pr.StringResult + "\" does not exist."
);
return;
}
// Create a new block reference referring to the block
br =
new BlockReference(
new Point3d(),
bt
);
}
BlockTableRecord btr =
(BlockTableRecord)tr.GetObject(
br.DynamicBlockTableRecord,
OpenMode.ForRead
);
// Call our function to display the block properties
DisplayDynBlockProperties(ed, br, btr.Name);
// Committing is cheaper than aborting
tr.Commit();
}
}
private static void DisplayDynBlockProperties(
Editor ed, BlockReference br, string name
)
{
// Only continue is we have a valid dynamic block
if (br != null && br.IsDynamicBlock)
{
ed.WriteMessage(
"\nDynamic properties for \"{0}\"\n",
name
);
// Get the dynamic block's property collection
DynamicBlockReferencePropertyCollection pc =
br.DynamicBlockReferencePropertyCollection;
// Loop through, getting the info for each property
foreach (DynamicBlockReferenceProperty prop in pc)
{
// Start with the property name, type and description
ed.WriteMessage(
"\nProperty: \"{0}\" : {1}",
prop.PropertyName,
prop.UnitsType
);
if (prop.Description != "")
ed.WriteMessage(
"\nDescription: {0}",
prop.Description
);
// Is it read-only?
if (prop.ReadOnly)
ed.WriteMessage(" (Read Only)");
// Get the allowed values, if it's constrained
bool first = true;
foreach (object value in prop.GetAllowedValues())
{
ed.WriteMessage(
(first ? "\nAllowed values: [" : ", ")
);
ed.WriteMessage("\"{0}\"", value);
first = false;
}
if (!first)
ed.WriteMessage("]");
// And finally the current value
ed.WriteMessage(
"\nCurrent value: \"{0}\"\n",
prop.Value
);
}
}
}
}
}
页:
[1]