C#获取CAD中的当前正在编辑的BlockReference
时间: 2024-04-30 12:18:27 浏览: 20
可以使用AutoCAD的API来获取当前正在编辑的BlockReference,以下是一段示例代码:
```csharp
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
public static BlockReference GetCurrentBlockReference()
{
Document doc = Application.DocumentManager.MdiActiveDocument;
Database db = doc.Database;
Editor ed = doc.Editor;
// 获取当前选择集
PromptSelectionResult selResult = ed.SelectImplied();
if (selResult.Status != PromptStatus.OK)
{
ed.WriteMessage("No objects selected.");
return null;
}
SelectionSet selSet = selResult.Value;
// 获取当前正在编辑的块参照
using (Transaction tr = db.TransactionManager.StartTransaction())
{
foreach (ObjectId id in selSet.GetObjectIds())
{
Entity ent = tr.GetObject(id, OpenMode.ForRead) as Entity;
if (ent is BlockReference && ent.IsWriteEnabled)
{
BlockReference blockRef = ent as BlockReference;
if (blockRef.IsDynamicBlock && blockRef.IsDynamicBlockReference)
{
return blockRef;
}
}
}
}
ed.WriteMessage("No dynamic block references found.");
return null;
}
```
该代码中,我们使用了AutoCAD的API来获取当前选择集,并在选择集中查找当前正在编辑的动态块参照。如果找到了动态块参照,则返回该参照的实例,否则返回null。