VB 置托盘菜单 并动态显示 托盘提示

在Form中制作一个菜单，在窗体上点右键－菜单编辑器，标题随便，名称“F00”（不含引号，下同），去掉“可见”前的勾，“下一个”，标题“打开”，名称“F01”，点“右箭头”，“下一个”，标题退出，名称“F02”，点“右箭头”，“确定”

以下是代码，效果是程序运行时不显示在托盘中图标，点最小化后显示在托盘图标并且不在任务栏中显示窗口，双击图标打开窗口，右键点图标弹出菜单

‘———————–窗体中————————–
Dim WindowTop, WindowLeft

Function WindowStyle()
‘以下把程序放入System Tray====================================System Tray Begin
With nfIconData
.hWnd = Me.hWnd
.uID = Me.Icon
.uFlags = NIF_ICON Or NIF_MESSAGE Or NIF_TIP
.uCallbackMessage = WM_MOUSEMOVE
.hIcon = Me.Icon.Handle
‘定义鼠标移动到托盘上时显示的Tip
.szTip = “已最小化到托盘” & vbNullChar
.cbSize = Len(nfIconData)
End With
Call Shell_NotifyIcon(NIM_ADD, nfIconData)
‘=============================================================System Tray End
Me.Hide
End Function

Private Sub Form_Resize()
WindowTop = Me.Top
WindowLeft = Me.Left
If Me.WindowState = 1 Then
WindowStyle
End If
End Sub

Private Sub Form_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
Dim lMsg As Single
lMsg = X / Screen.TwipsPerPixelX
Select Case lMsg
Case WM_LBUTTONDBLCLK ‘双击左键显示窗体，要改成其他的看模块里的定义
ShowWindow Me.hWnd, SW_RESTORE
Me.Top = WindowTop
Me.Left = WindowLeft
‘Call Shell_NotifyIcon(NIM_DELETE, nfIconData)
Me.SetFocus
Case WM_RBUTTONUP ‘在托盘图标上点右键显示菜单
PopupMenu F00 ‘菜单名称为F00，做菜单时你可以改成别的，这里也得改成相应的
End Select
End Sub

Private Sub F01_Click()
ShowWindow Me.hWnd, SW_RESTORE
Me.Top = WindowTop
Me.Left = WindowLeft
Call Shell_NotifyIcon(NIM_DELETE, nfIconData)
End Sub

Private Sub F02_Click()
Call Shell_NotifyIcon(NIM_DELETE, nfIconData)
End
End Sub

Private Sub Form_QueryUnload(Cancel As Integer, UnloadMode As Integer)
‘退出程序时删除托盘图标
Call Shell_NotifyIcon(NIM_DELETE, nfIconData)
End Sub

‘———————–模块中————————–
‘在系统托盘显示图标的模块

Option Explicit
Public Const MAX_TOOLTIP As Integer = 64
Public Const NIF_ICON = &H2
Public Const NIF_MESSAGE = &H1
Public Const NIF_TIP = &H4
Public Const NIM_ADD = &H0
Public Const NIM_DELETE = &H2
Public Const WM_MOUSEMOVE = &H200
Public Const WM_LBUTTONDOWN = &H201
Public Const WM_LBUTTONUP = &H202
Public Const WM_LBUTTONDBLCLK = &H203
Public Const WM_RBUTTONDOWN = &H204
Public Const WM_RBUTTONUP = &H205
Public Const WM_RBUTTONDBLCLK = &H206
Public Const SW_RESTORE = 9
Public Const SW_HIDE = 0
Public nfIconData As NOTIFYICONDATA
Public Type NOTIFYICONDATA
cbSize As Long
hWnd As Long
uID As Long
uFlags As Long
uCallbackMessage As Long
hIcon As Long
szTip As String * MAX_TOOLTIP
End Type
Public Declare Function ShowWindow Lib “user32” (ByVal hWnd As Long, ByVal nCmdShow As Long) As Long
Public Declare Function Shell_NotifyIcon Lib “shell32.dll” Alias “Shell_NotifyIconA” (ByVal dwMessage As Long, lpData As NOTIFYICONDATA) As Long

如果要实现动态 百分比 提示 可以增加如下代码

新增一个时钟控件

  With     ProgressBar1    
                              If     .Value     =     .Max     Then    
                                              Timer1.Enabled     =     False    
                                              Exit     Sub    
                              End     If    
                                 
                              .Value     =     .Value     +     1    
                              Label1.Caption     =     Format(.Value     *     100     /     .Max,     “## “)     &     “% ”    
              End     With    

第一次这样是没有问题的，在之后的调用中，因为托盘项已经存在，需要使用
Shell_NotifyIcon NIM_MODIFY, NotifyIcon
来更改托盘中的图标或信息。

这是关于的Shell_NotifyIcon第一个参数可用的三个常量的声明：
Public Const NIM_ADD = &H0
Public Const NIM_DELETE = &H2
Public Const NIM_MODIFY = &H1