objacts.cls

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VERSION 1.0 CLASS
BEGIN
  MultiUse = -1  'True
  Persistable = 0  'NotPersistable
  DataBindingBehavior = 0  'vbNone
  DataSourceBehavior  = 0  'vbNone
  MTSTransactionMode  = 0  'NotAnMTSObject
END
Attribute VB_Name = "ObjActs"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = True
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = False
Attribute VB_Ext_KEY = "SavedWithClassBuilder6" ,"Yes"
Attribute VB_Ext_KEY = "Top_Level" ,"No"
Attribute VB_Ext_KEY = "Collection" ,"ObjDraw"
Attribute VB_Ext_KEY = "Member0" ,"ObjDraw"
Option Explicit

'局部变量，保存集合
Private mCol As Collection

Public Function Add(objNewMember As ObjDraw, Optional sKey As String) As ObjDraw

    If Len(sKey) = 0 Then
        mCol.Add objNewMember
    Else
        mCol.Add objNewMember, sKey
    End If

    '返回已创建的对象
    Set Add = objNewMember

End Function

Public Property Get Item(vntIndexKey As Variant) As ObjDraw
    Set Item = mCol(vntIndexKey)
End Property

Public Property Get Count() As Long
    '检索集合中的元素数时使用。语法：Debug.Print x.Count
    Count = mCol.Count
End Property


Public Sub Remove(vntIndexKey As Variant)
    mCol.Remove vntIndexKey
End Sub


Public Property Get NewEnum() As IUnknown
Attribute NewEnum.VB_UserMemId = -4
Attribute NewEnum.VB_MemberFlags = "40"
    '本属性允许用 For...Each 语法枚举该集合。
    Set NewEnum = mCol.[_NewEnum]
End Property


Private Sub Class_Initialize()
    '创建类后创建集合
    Set mCol = New Collection
End Sub


Private Sub Class_Terminate()
    '类终止后破坏集合
    Set mCol = Nothing
End Sub