excel 将事件分配给多个动态标签

xuo3flqw 于 2023-03-24 发布在其他

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在VBA中，我很难将事件分配给动态创建的标签。我想将tbEvents_Click分配给每个标签。
我上的是Class1

Option Explicit

Public WithEvents tbEvents As MSForms.Label

Private Sub tbEvents_Click()
   
        MsgBox "You clicked label"

End Sub

和形式frMain

Dim HH As Long, VV As Long

Public tbPin As MSForms.Label
Dim Question As New Class1

Dim objMyEventClass As New Class1
  

Option Explicit

Private Sub UserForm_Initialize()
    
    HH = shQuestions.Range("C1").CurrentRegion.Columns.Count
    VV = shQuestions.Range("A3").CurrentRegion.Rows.Count
  
End Sub

Private Sub addQuestions()

    Dim i As Long, j As Long
    Dim mmm As String

    For i = 1 To VV + 1
        
        For j = 1 To HH + 1
    
        Set tbPin = frMain.Controls.Add("Forms.Label.1", "label" & i & j, True)
            
            With tbPin
                              
                If i = 1 Then
                    .Caption = "Question" & i & j
                    .Height = 80
                    .Top = 230
                    .BackColor = RGB(100, 116, 168)
                    
                Else

                    .Caption = "labelPoints" & i & j
                    .Height = 460 / VV
                    .Top = 310 + (i - 2) * (460 / VV)
                    .BackColor = RGB(0, 116, 168)                 

                End If

                           
                If j = 1 Then
                    .Caption = "Points" & i & j
                    .Width = 325
                    .Left = 50
                    .BackColor = RGB(100, 116, 168)
                    
                Else

                    .Width = 750 / HH
                    .Left = 375 + (j - 2) * (750 / HH)
                                       
                    Set objMyEventClass.tbEvents = tbPin

                End If
                
            End With
        Next j
    Next i
    
End Sub

我希望

Set objMyEventClass.tbEvents = tbPin

将事件分配给所有标签。但它只将事件添加到最后创建的标签。我做错了什么？谢谢。

excel

来源：https://stackoverflow.com/questions/75815980/assigning-events-to-multiple-dynamic-labels

1条答案

按热度按时间

wljmcqd81#

您正在创建Class1的多个示例（每个标签一个），因此您需要将它们存储在类似于Collection的地方，以便在addQuestions sub完成后，它们都可以留在作用域中。
下面是一个简化的示例
1类：

Public WithEvents lblEvents As MSForms.Label

Private Sub lblEvents_Click()
    MsgBox "You clicked label " & lblEvents.Caption
End Sub

用户表单：

Option Explicit

Dim Questions As Collection 'needs to hold >1 Class1 object

Private Sub UserForm_Initialize()
    addQuestions 10, 10
End Sub

'create and return an instance of Class1
Function getLabelHandler(lbl As MSForms.Label)
    Set getLabelHandler = New Class1
    Set getLabelHandler.lblEvents = lbl
End Function

Private Sub addQuestions(numRows As Long, numCols As Long)
    Dim r As Long, c As Long, lbl As MSForms.Label
    Set Questions = New Collection

    For r = 1 To numRows
        For c = 1 To numCols
            Set lbl = Me.Controls.Add("Forms.Label.1", "lblR" & r & "C" & c, True) 'Me
            Questions.Add getLabelHandler(lbl)
            lbl.Caption = "R" & r & "-C" & c
            lbl.BackColor = IIf(r = 1 Or c = 1, RGB(100, 116, 168), RGB(0, 116, 168))
            lbl.Top = 20 + (r - 1) * 20
            lbl.Left = 20 + (c - 1) * 40
            lbl.Height = 19
            lbl.Width = 39
        Next c
    Next r
End Sub

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excel 将事件分配给多个动态标签

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