隐藏或显示托盘图标

'声明定义
Option Explicit
Private Const WM_USER = &H400
Private Const TB_BUTTONCOUNT = (WM_USER + 24)
Private Const TB_HIDEBUTTON = (WM_USER + 4)
Private Const TB_GETBUTTONTEXTA = (WM_USER + 45)
Private Const TB_AUTOSIZE = (WM_USER + 33)

Private Const MEM_COMMIT = &H1000
Private Const MEM_RESERVE = &H2000
Private Const MEM_RELEASE = &H8000

Private Const PAGE_READWRITE = &H4

Private Const PROCESS_VM_OPERATION = (&H8)
Private Const PROCESS_VM_READ = (&H10)
Private Const PROCESS_VM_WRITE = (&H20)

Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Private Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA" (ByVal hWnd1 As Long, ByVal hwnd2 As Long, ByVal lpsz1 As String, ByVal lpsz2 As String) As Long
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Private Declare Function VirtualAllocEx Lib "kernel32.dll" (ByVal hProcess As Long, lpAddress As Any, ByRef dwSize As Long, ByVal flAllocationType As Long, ByVal flProtect As Long) As Long
Private Declare Function VirtualFreeEx Lib "kernel32.dll" (ByVal hProcess As Long, lpAddress As Any, ByRef dwSize As Long, ByVal dwFreeType As Long) As Long
Private Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredAccess As Long, ByVal bInheritHandle As Long, ByVal dwProcessId As Long) As Long
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long
Private Declare Function GetWindowThreadProcessId Lib "user32" (ByVal hWnd As Long, lpdwProcessId As Long) As Long
Private Declare Function ReadProcessMemory Lib "kernel32" (ByVal hProcess As Long, lpBaseAddress As Any, lpBuffer As Any, ByVal nSize As Long, lpNumberOfBytesWritten As Long) As Long
Private Declare Function WriteProcessMemory Lib "kernel32" (ByVal hProcess As Long, lpBaseAddress As Any, lpBuffer As Any, ByVal nSize As Long, lpNumberOfBytesWritten As Long) As Long
Private Declare Function GetCurrentProcessId Lib "kernel32" () As Long

'Form窗体
'需要的控件：Command1，Command2，Command3，ListBox

Private Sub Command1_Click() '隐藏指定图标
Dim pIdExplorer As Long, hwnd2 As Long, hExplorer As Long, lpIconText As Long
Dim i As Integer
Dim BtnCount As Integer
Dim IconText As String

hwnd2 = FindWindow("Shell_TrayWnd", vbNullString)
hwnd2 = FindWindowEx(hwnd2, 0, "TrayNotifyWnd", vbNullString)
hwnd2 = FindWindowEx(hwnd2, 0, "SysPager", vbNullString)
hwnd2 = FindWindowEx(hwnd2, 0, "ToolbarWindow32", vbNullString)

GetWindowThreadProcessId hwnd2, pIdExplorer
hExplorer = OpenProcess(PROCESS_VM_OPERATION Or PROCESS_VM_READ Or PROCESS_VM_WRITE, False, pIdExplorer)
lpIconText = VirtualAllocEx(ByVal hExplorer, ByVal 0&, Len(IconText), MEM_COMMIT Or MEM_RESERVE, PAGE_READWRITE)

BtnCount = SendMessage(hwnd2, TB_BUTT

ONCOUNT, 0, 0)

Dim lLen As Long, sBuff As String
For i = 0 To BtnCount - 1

IconText = Space$(256)
lLen = SendMessage(hwnd2, TB_GETBUTTONTEXTA, i, ByVal lpIconText)
ReadProcessMemory hExplorer, ByVal lpIconText, ByVal IconText, Len(IconText), 0
If lLen <> -1 Then IconText = Left$(IconText, InStr(1, IconText, Chr$(0)) - 1)
If IconText = List1.List(List1.ListIndex) Then ' 替换为需要隐藏的图标名称：就是鼠标放在图标上时显示的文字
SendMessage hwnd2, TB_HIDEBUTTON, i, ByVal True
SendMessage hwnd2, TB_AUTOSIZE, 0, 0
End If
Next
VirtualFreeEx hExplorer, lpIconText, Len(IconText), MEM_RELEASE
CloseHandle hExplorer
End Sub

Private Sub Command2_Click() '显示指定图标
Dim pIdExplorer As Long, hwnd2 As Long, hExplorer As Long, lpIconText As Long
Dim i As Integer
Dim BtnCount As Integer
Dim IconText As String

hwnd2 = FindWindow("Shell_TrayWnd", vbNullString)
hwnd2 = FindWindowEx(hwnd2, 0, "TrayNotifyWnd", vbNullString)
hwnd2 = FindWindowEx(hwnd2, 0, "SysPager", vbNullString)
hwnd2 = FindWindowEx(hwnd2, 0, "ToolbarWindow32", vbNullString)

GetWindowThreadProcessId hwnd2, pIdExplorer
hExplorer = OpenProcess(PROCESS_VM_OPERATION Or PROCESS_VM_READ Or PROCESS_VM_WRITE, False, pIdExplorer)
lpIconText = VirtualAllocEx(ByVal hExplorer, ByVal 0&, Len(IconText), MEM_COMMIT Or MEM_RESERVE, PAGE_READWRITE)

BtnCount = SendMessage(hwnd2, TB_BUTTONCOUNT, 0, 0)

Dim lLen As Long, sBuff As String
For i = 0 To BtnCount - 1

IconText = Space$(256)
lLen = SendMessage(hwnd2, TB_GETBUTTONTEXTA, i, ByVal lpIconText)
ReadProcessMemory hExplorer, ByVal lpIconText, ByVal IconText, Len(IconText), 0
If lLen <> -1 Then IconText = Left$(IconText, InStr(1, IconText, Chr$(0)) - 1)
If IconText = List1.List(List1.ListIndex) Then ' ' 替换为需要隐藏的图标名称：就是鼠标放在图标上时显示的文字
SendMessage hwnd2, TB_HIDEBUTTON, i, ByVal False
SendMessage hwnd2, TB_AUTOSIZE, 0, 0
End If
Next
VirtualFreeEx hExplorer, lpIconText, Len(IconText), MEM_RELEASE
CloseHandle hExplorer
End Sub

Private Sub Command3_Click() '刷新图标列表
List1.Clear
Dim pIdExplorer As Long, hwnd2 As Long, hExplorer As Long, lpIconText As Long
Dim i As Integer
Dim BtnCount As Integer
Dim IconText As String

hwnd2 = FindWindow("Shell_TrayWnd", vbNullString)
hwnd2 = FindWindowEx(hwnd2, 0, "TrayNotifyWnd", vbNullString)
hwnd2 = FindWindowEx(hwnd2, 0, "SysPager", vbNullString)
hwnd2 = FindWindowEx(hwnd2, 0, "ToolbarWindow32", vbNullString)

GetWindowThreadProcessId hwnd2, pIdExplorer
hExplorer = OpenProcess(PROCESS_VM_OPERATION Or PROCESS_VM_READ Or PROCESS_VM_WRITE, False, pIdExplorer)
lpIconText = VirtualAllocEx(ByVal

hExplorer, ByVal 0&, Len(IconText), MEM_COMMIT Or MEM_RESERVE, PAGE_READWRITE)

BtnCount = SendMessage(hwnd2, TB_BUTTONCOUNT, 0, 0)

Dim lLen As Long, sBuff As String
For i = 0 To BtnCount - 1

IconText = Space$(256)
lLen = SendMessage(hwnd2, TB_GETBUTTONTEXTA, i, ByVal lpIconText)
ReadProcessMemory hExplorer, ByVal lpIconText, ByVal IconText, Len(IconText), 0
If lLen <> -1 Then IconText = Left$(IconText, InStr(1, IconText, Chr$(0)) - 1)
List1.AddItem IconText

Next
VirtualFreeEx hExplorer, lpIconText, Len(IconText), MEM_RELEASE
CloseHandle hExplorer
End Sub

Private Sub Form_Load()
Command3_Click
Command1_Click
End Sub