在通常情况下，treeview的背景色是不可以修改的，我们可以通过API实现，源码如下

Option Explicit

Private Declare Function SendMessage Lib "User32" Alias "SendMessageA" (ByVal hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Long) As Long

Private Declare Function GetWindowLong Lib "User32" Alias "GetWindowLongA" (ByVal hWnd As Long, ByVal nIndex As Long) As Long

Private Declare Function SetWindowLong Lib "User32" Alias "SetWindowLongA" (ByVal hWnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long

Private Const GWL_STYLE = -16&

Private Const TVM_SETBKCOLOR = 4381&

Private Const TVM_GETBKCOLOR = 4383&

Private Const TVS_HASLINES = 2&

Private Sub Form_Load()

Dim nodex As Node

Dim i As Integer

Dim lStyle As Long

Call SendMessage(TreeView1.hWnd, TVM_SETBKCOLOR, 0, ByVal RGB(255, 0, 0))

lStyle = GetWindowLong(TreeView1.hWnd, GWL_STYLE)

Call SetWindowLong(TreeView1.hWnd, GWL_STYLE, lStyle - TVS_HASLINES)

Call SetWindowLong(TreeView1.hWnd, GWL_STYLE, lStyle)

TreeView1.Style = tvwTreelinesPlusMinusPictureText

TreeView1.BorderStyle = ccFixedSingle

With TreeView1.Nodes

Set nodex = .Add(, , "R", "Root")

nodex.BackColor = RGB(255, 0, 0)

For i = 1 To 10

Set nodex = .Add("R", tvwChild, "C" & i, "Child " & i)

nodex.BackColor = RGB(255, 0, 0)

nodex.EnsureVisible

Next

End With

End Sub

完