Function GetLabelCount() As Integer
Dim i As Integer
Dim c As Integer
Dim L As Object

Set L = Me.Controls("Label1")
For i = 1 To 10
If L.Item(i).Caption <> vbNullString Then
c = c + 1
End If
Next
Set L = Nothing
GetLabelCount = c
End Function

请问这段函数过程的红色字段是什么解释的意思？请帮忙解答!谢谢！

Function GetLabelCount() As Integer 'GetLabelCount是函数名字
Dim i As Integer
Dim c As Integer
Dim L As Object

Set L = Me.Controls("Label1")
For i = 1 To 10
If L.Item(i).Caption <> vbNullString Then
c = c + 1
End If
Next
Set L = Nothing '释放L对象……
GetLabelCount = c '将结果返回给GetLabelCount名字,调用时会得到它
End Function