SysTreeview32

vb中木有systreeview,是.net里的么?

systreeview 指的是外部软件，其他软件中的

窗体:
Option ExplicitPrivate Sub Command1_Click()
    Dim mhwnd As Long    mhwnd = Val(Text1.Text) 'Text1里 treeview的句柄
    Dim i As Long, s As String
    Dim dwProcessId As Long, hProcess As Long
    Dim dwBytesRead As Long, dwBytesWrite As Long
    Dim bSuccess As Long
    Call GetWindowThreadProcessId(mhwnd, dwProcessId)
    Dim lpTreeItemRemote As Long, lpTextRemote As Long
    Dim nMaxLen As Long
    nMaxLen = 1023
    Dim szBuf() As Byte
    ReDim szBuf(nMaxLen)
    Dim lvItemLocal As TVITEM
    Dim bWriteOK As Long
        Dim sItemText As String

    hProcess = OpenProcess(PROCESS_VM_OPERATION Or PROCESS_VM_READ Or PROCESS_VM_WRITE, 0&, dwProcessId)
    If hProcess <> 0 Then
        lpTextRemote = VirtualAllocEx(ByVal hProcess, ByVal 0&, nMaxLen + 1, MEM_COMMIT, PAGE_READWRITE)
        lpTreeItemRemote = VirtualAllocEx(ByVal hProcess, ByVal 0&, Len(lvItemLocal), MEM_COMMIT, PAGE_READWRITE)
        bWriteOK = WriteProcessMemory(ByVal hProcess, ByVal lpTextRemote, szBuf(0), nMaxLen + 1, dwBytesWrite)

        'write structure
        dwBytesWrite = 0
        lvItemLocal.hItem = SendMessage(mhwnd, TVM_GETNEXTITEM, TVGN_CARET, ByVal 0)
        lvItemLocal.mask = TVIF_TEXT + TVIF_HANDLE
        lvItemLocal.cchTextMax = nMaxLen
        lvItemLocal.pszText = lpTextRemote
        bWriteOK = WriteProcessMemory(ByVal hProcess, ByVal lpTreeItemRemote, ByVal VarPtr(lvItemLocal), Len(lvItemLocal), dwBytesWrite)

        'get item
        i = SendMessage(mhwnd, TVM_GETITEM, 0&, ByVal lpTreeItemRemote)


        'read result
        bSuccess = ReadProcessMemory(ByVal hProcess, ByVal lpTextRemote, szBuf(0), nMaxLen + 1, dwBytesRead)
        Call VirtualFreeEx(hProcess, ByVal lpTreeItemRemote, 0, MEM_DECOMMIT)
        Call VirtualFreeEx(hProcess, ByVal lpTextRemote, 0, MEM_DECOMMIT)
    End If
    CloseHandle hProcess

    '*************** 显示结果
    sItemText = StrConv(LeftB(szBuf, InStrB(szBuf, ChrB(0))), vbUnicode)
    Text2.Text = sItemText
End Sub

Option Explicit
Public Declare Function WindowFromPoint Lib "user32" (ByVal xPoint As Long, ByVal yPoint As Long) As Long
Public Declare Function GetClassName Lib "user32" Alias "GetClassNameA" (ByVal hwnd As Long, ByVal lpClassName As String, ByVal nMaxCount As Long) As Long'Structures
Public Type TVITEM
    mask As Long
    hItem As Long
    state As Long
    stateMask As Long
    pszText As Long
    cchTextMax As Long
    iImage As Long
    iSelectedImage As Long
    cChildren As Long
    lParam As Long
End Type
'public constants
Public Const TVIF_TEXT = 1
Public Const TVIF_HANDLE = &H10
Public Const TV_FIRST = &H1100&
Public Const TVM_GETCOUNT = TV_FIRST + 5
Public Const TVM_SELECTITEM = TV_FIRST + 11
Public Const TVM_GETITEM = TV_FIRST + 12
Public Const TVM_GETNEXTITEM = TV_FIRST + 10
Public Const TVGN_ROOT = 0
Public Const TVGN_NEXT = 1
Public Const TVGN_CHILD = 4
Public Const TVGN_CARET = 9
'API declarations
Public Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As LongPublic Declare Function GetWindowThreadProcessId Lib "user32" (ByVal hwnd As Long, lpdwProcessId As Long) As Long
Public Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredAccess As Long, ByVal bInheritHandle As Long, ByVal dwProcessId As Long) As Long
Public Declare Function VirtualAlloc Lib "kernel32" (lpAddress As Any, ByVal dwSize As Long, ByVal flAllocationType As Long, ByVal flProtect As Long) As Long
Public Declare Function WriteProcessMemory Lib "kernel32" (ByVal hProcess As Long, lpBaseAddress As Any, lpBuffer As Any, ByVal nSize As Long, lpNumberOfBytesWritten As Long) As Long
Public Declare Function ReadProcessMemory Lib "kernel32" (ByVal hProcess As Long, lpBaseAddress As Any, lpBuffer As Any, ByVal nSize As Long, lpNumberOfBytesWritten As Long) As Long
Public Declare Function VirtualFree Lib "kernel32" (lpAddress As Any, ByVal dwSize As Long, ByVal dwFreeType As Long) As Long
Public Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long
Public Declare Function FindWindow& Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String)
Public Declare Function FindWindowEx& Lib "user32" Alias "FindWindowExA" (ByVal hWndParent As Long, ByVal hWndChildAfter As Long, ByVal lpClassName As String, ByVal lpWindowName As String)
'============NT Shared memory staff======================
Public Const PROCESS_QUERY_INFORMATION = &H400
Public Const PROCESS_VM_OPERATION = &H8
Public Const PROCESS_VM_READ = &H10
Public Const PROCESS_VM_WRITE = &H20
Public Const PROCESS_ALL_ACCESS = 0
Public Declare Function VirtualAllocEx Lib "kernel32" (ByVal hProcess As Long, ByVal lpAddress As Long, ByVal dwSize As Long, ByVal flAllocationType As Long, ByVal flProtect As Long) As Long
Public Declare Function VirtualFreeEx Lib "kernel32" (ByVal hProcess As Long, lpAddress As Any, ByVal dwSize As Long, ByVal dwFreeType As Long) As LongPublic Const MEM_COMMIT = &H1000
Public Const MEM_RESERVE = &H2000
Public Const MEM_DECOMMIT = &H4000
Public Const MEM_RELEASE = &H8000
Public Const MEM_FREE = &H10000
Public Const MEM_PRIVATE = &H20000
Public Const MEM_MAPPED = &H40000
Public Const MEM_TOP_DOWN = &H100000'==========Memory access public constants===========
Public Const PAGE_NOACCESS = &H1&
Public Const PAGE_READONLY = &H2&
Public Const PAGE_READWRITE = &H4&
Public Const PAGE_WRITECOPY = &H8&
Public Const PAGE_EXECUTE = &H10&
Public Const PAGE_EXECUTE_READ = &H20&
Public Const PAGE_EXECUTE_READWRITE = &H40&
Public Const PAGE_EXECUTE_WRITECOPY = &H80&
Public Const PAGE_GUARD = &H100&
Public Const PAGE_NOCACHE = &H200&

8F---模块代码
(是以前的代码,很久没看了. 这个systreeview32和treeview是一样的. 看看VB的编辑器,工程资源管理器就是个systreeview32)

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