全选Dim trv As WinForm.TreeView = Forms("窗口1").Controls("TreeView1")
For Each nd As WinForm.TreeNode In trv.AllNodes
nd.Checked = True
Next
---------------------------------------------------------------------
反选
Dim trv As WinForm.TreeView = Forms("窗口1").Controls("TreeView1")
For Each nd As WinForm.TreeNode In trv.AllNodes
nd.Checked = not nd.Checked
Next