还原层状态 （.NET）

该方法将图层设置重置为图层状态，并且需要四个值。第一个值是要还原的图层状态的名称，第二个值是要还原其图层设置的视口的对象 ID。第三个值是一个整数，用于定义如何处理未处于图层状态的图层。第四个值确定要恢复的图层设置。RestoreLayerState

以下值确定如何处理未处于图层状态的图层：

• 0 - 未处于图层状态的图层保持不变
• 1 - 未处于图层状态的图层处于关闭状态
• 2 - 未处于图层状态的图层将冻结在当前视口中
• 4 - 图层设置恢复为视口覆盖

例如，如果将颜色和线型设置保存在名称“ColorLinetype”下，然后更改这些设置，则还原“ColorLinetype”会将图层重置为保存“ColorLinetype”时的颜色和线型。如果在保存“ColorLinetype”后向图形添加新图层，则在恢复“ColorLinetype”时，这些新图层不受影响。

恢复图形图层的颜色和线型设置

假设当前图形中图层的颜色和线型设置以前保存在名称“ColorLinetype”下，则以下代码将图形中每个图层的颜色和线型设置恢复到保存“ColorLinetype”时的值。

Imports Autodesk.AutoCAD.Runtime
Imports Autodesk.AutoCAD.ApplicationServices
Imports Autodesk.AutoCAD.DatabaseServices
 
<CommandMethod("RestoreLayerState")> _
Public Sub RestoreLayerState()
    '' Get the current document
    Dim acDoc As Document = Application.DocumentManager.MdiActiveDocument
 
    Dim acLyrStMan As LayerStateManager
    acLyrStMan = acDoc.Database.LayerStateManager
 
    Dim sLyrStName As String = "ColorLinetype"
 
    If acLyrStMan.HasLayerState(sLyrStName) = True Then
        acLyrStMan.RestoreLayerState(sLyrStName, _
                                     ObjectId.Null, _
                                     1, _
                                     LayerStateMasks.Color + _
                                     LayerStateMasks.LineType)
    End If
End Sub

using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
 
[CommandMethod("RestoreLayerState")]
public static void RestoreLayerState()
{
    // Get the current document
    Document acDoc = Application.DocumentManager.MdiActiveDocument;
 
    LayerStateManager acLyrStMan;
    acLyrStMan = acDoc.Database.LayerStateManager;
 
    string sLyrStName = "ColorLinetype";
 
    if (acLyrStMan.HasLayerState(sLyrStName) == true)
    {
        acLyrStMan.RestoreLayerState(sLyrStName,
                                     ObjectId.Null,
                                     1,
                                     LayerStateMasks.Color |
                                     LayerStateMasks.LineType);
    }
}

Sub RestoreLayerState()
    Dim oLSM As AcadLayerStateManager
    Set oLSM = ThisDrawing.Application. _
                   GetInterfaceObject("AutoCAD.AcadLayerStateManager.24")
 
    oLSM.SetDatabase ThisDrawing.Database
    oLSM.Restore "ColorLinetype"
End Sub