现在了实例,运行出现如下错误,该如何解决?
Run-time error '91':
Object variable or With block variable not set
Private Sub setUpColumns()
Dim cCol As cCTreeViewColumn
With tvwColumns
With .Columns .Item(1).Width = 128
Set cCol = .Add("TRACK", "Track")
Set cCol = .Add("LENGTH", "Length")
Set cCol = .Add("SIZE", "Size")
End With
End With
End Sub