'Type NOTIFYICONDATA
' cbSize As Long 需填入NOTIFYICONDATA数据结构的长度
' HWnd As Long 设置成窗口的句柄
' Uid As Long 为图标所设置的ID值
' UFlags As Long 用来设置以下三个参数uCallbackMessage、hIcon、szTip是否有效
' UCallbackMessage As Long 消息编号
' HIcon As Long 显示在状态栏上的图标
' SzTip As String * 64 提示信息
'End Type
Declare Function Shell_NotifyIcon Lib "shell32.dll" Alias "Shell_NotifyIconA" (ByVal dwMessage As Long, lpData As NOTIFYICONDATA) As Long
Public Const WM_USER = &H400
Public Const WM_LBUTTONUP = &H202
Public Const WM_MBUTTONUP = &H208
Public Const WM_RBUTTONUP = &H205
Public Const TRAY_CALLBACK = (WM_USER + 1001&)
Public Const GWL_WNDPROC = (-4)
Public Const GWL_USERDATA = (-21)
Public Const NIF_ICON = &H2
Public Const NIF_TIP = &H4
Public Const NIM_ADD = &H0
Public Const NIF_MESSAGE = &H1
Public Const NIM_MODIFY = &H1
Public Const NIM_DELETE = &H2
'记录 设置托盘图标的数据 的数据类型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 * 64
End Type
'TheData变量记录设置托盘图标的数据
Private TheData As NOTIFYICONDATA
' *********************************************
' 新的窗口过程--主程序中采用SetWindowLong函数改变了窗口函数的地址,消息转向由NewWindowProc处理
' *********************************************
Public Function NewWindowProc(ByVal HWnd As Long, ByVal Msg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
'如果用户点击了托盘中的图标,则进行判断是点击了左键还是右键
If Msg = TRAY_CALLBACK Then
'如果点击了左键
If lParam = WM_LBUTTONUP Then
'而这时窗体的状态是最小化时
If TheForm.WindowState = vbMinimized Then _
'恢复到最小化前的窗体状态
TheForm.WindowState = TheForm.LastState
TheForm.SetFocus
Exit Function
End If
End If
'如果点击了右键
If lParam = WM_RBUTTONUP Then
'则弹出右键菜单
TheForm.PopupMenu TheMenu
Exit Function
End If
End If'如果是其他类型的消息则传递给原有默认的窗口函数
NewWindowProc = CallWindowProc(OldWindowProc, HWnd, Msg, wParam, lParam)
End Function
' *********************************************
' 把主窗体的图标(Form1.icon属性可改变)添加到托盘中
' *********************************************
Public Sub AddToTray(frm As Form, mnu As Menu)
'知识点滴:HWnd属性
'返回窗体或控件的句柄。语法: object.HWnd
'说明:Microsoft Windows 运行环境,通过给应用程序中的每个窗体和控件
'分配一个句柄(或 hWnd)来标识它们。hWnd 属性用于Windows API调用。
'将主窗体图标添加在托盘中
With TheData
.Uid = 0 '忘了吗?参考一下前面内容,Uid图标的序号,做动画图标有用
.HWnd = frm.HWnd
.cbSize = Len(TheData)
.HIcon = frm.Icon.Handle
.UFlags = NIF_ICON '指明要对图标进行设置
.UCallbackMessage = TRAY_CALLBACK
.UFlags = .UFlags Or NIF_MESSAGE '指明要设置图标或返回信息给主窗体,此句不能省去
.cbSize = Len(TheData) '为什么呢?我们需要在添加图标的同时,让其返回信息
End With '给主窗体,Or的意思是同时进行设置和返回消息
Shell_NotifyIcon NIM_ADD, TheData '根据前面定义NIM_ADD,设置为“添加模式”
End Sub
' *********************************************
' 删除系统托盘中的图标
' *********************************************
Public Sub RemoveFromTray()
'删除托盘中的图标
With TheData
.UFlags = 0
End With
Shell_NotifyIcon NIM_DELETE, TheData '根据前面定义NIM_DELETE,设置为“删除模式”
'恢复原有的设置
SetWindowLong TheForm.HWnd, GWL_WNDPROC, OldWindowProc
End Sub
' *********************************************
' 为托盘中的图标加上浮动提示(也就是鼠标移上去时出现的提示字条)
' *********************************************
Public Sub SetTrayTip(tip As String)
With TheData
.SzTip = tip & vbNullChar
.UFlags = NIF_TIP '指明要对浮动提示进行设置
End With
Shell_NotifyIcon NIM_MODIFY, TheData '根据前面定义NIM_MODIFY,设置为“修改模式”
End Sub
' *********************************************
' 设置托盘的图标(在本例中没有用到,如果要动态改变托盘内显示的图标,它非常有用)
' 例如:1、显示动画图标(方法你一定猜到了,对!使用Timer控件,不断调用此过程,注意把动画放在pic数组中)
' 2、程序处于不同状态时,显示不同的图标,方法是类似的
' 有兴趣的话试一试吧。
' *********************************************
Public Sub SetTrayIcon(pic As Picture)
'判断一下pic中存放的是不是图标
If pic.Type <> vbPicTypeIcon Then Exit Sub
'更换图标为pic中存放的图标
With TheData
.HIcon = pic.Handle
.UFlags = NIF_ICON
End With
Shell_NotifyIcon NIM_MODIFY, TheData
End Sub
Public Function NewWindowProc(ByVal HWnd As Long, ByVal Msg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
'如果用户点击了托盘中的图标,则进行判断是点击了左键还是右键
If Msg = TRAY_CALLBACK Then
'如果点击了左键
If lParam = WM_LBUTTONUP Then
'而这时窗体的状态是最小化时
If TheForm.WindowState = vbMinimized Then _
'恢复到最小化前的窗体状态
TheForm.WindowState = TheForm.LastState
TheForm.SetFocus
Exit Function
End If
End If
'如果点击了右键
If lParam = WM_RBUTTONUP Then
'则弹出右键菜单
TheForm.PopupMenu TheMenu
Exit Function
End If
End If
'如果是其他类型的消息则传递给原有默认的窗口函数
NewWindowProc = CallWindowProc(OldWindowProc, HWnd, Msg, wParam, lParam)
End Function 这样我们就取得并处理了来自托盘图标的消息,现在的问题是在鼠标右键菜单弹出后,怎么控制程序主窗体的状态,这时我们需要用到SendMessage函数来向主窗体发送最大化、最小化、关闭、移动等消息,具体的代码实现如下,其中HWnd是主窗体的句柄,WM_SYSCOMMAND表示发送的是系统控制类的消息,SC_MOVE、SC_SIZE、SC_RESTORE便是要发送的消息了:
'托盘图标右键菜单上的“移动”项被点击时
Private Sub mnuTrayMove_Click()
SendMessage HWnd, WM_SYSCOMMAND, SC_MOVE, 0&
End Sub
'托盘图标右键菜单上的“恢复”项被点击时
Private Sub mnuTrayRestore_Click()
SendMessage HWnd, WM_SYSCOMMAND, SC_RESTORE, 0&
End Sub
'托盘图标右键菜单上的“退出”项被点击时
Private Sub mnuTraySize_Click()
SendMessage HWnd, WM_SYSCOMMAND, SC_SIZE, 0&
End Sub
程序(附后)用到了Shell_NotifyIcon、SendMessage、CallWindowProc、SetWindowLong等API函数,其中Shell_NotifyIcon是主要的函数,它用来添加、删除、更改系统托盘区(taskbar status area)的图标,所以我们先来看看这个函数的声明和参数:
使用API函数之前必须先在程序中声明如下:
Declare Function Shell_NotifyIcon Lib "shell32.dll" Alias "Shell_NotifyIconA" (ByVal dwMessage As Long, lpData As NOTIFYICONDATA) As Long
cbSize As Long 需填入NOTIFYICONDATA数据结构的长度
HWnd As Long 设置成窗口的句柄
Uid As Long 为图标所设置的ID值
UFlags As Long 设置uCallbackMessage,hIcon,szTip是否有效
UCallbackMessage As Long 消息编号
HIcon As Long 显示在状态栏上的图标
SzTip As String * 64 提示信息
End Type
返回值 Long,非零表示成功,零表示失败
在使用这个API函数之前我们应该先定义结构类型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 * 64
End Type
然后定义一个NOTIFYICONDATA的变量TheData来记录设置托盘图标的数据
Private TheData As NOTIFYICONDATA
这时我们就可以使用这个函数来设置系统托盘图标了,具体方法如下:
1、添加图标
With TheData
.Uid = 0
.HWnd = frm.HWnd 'frm.HWnd是程序主窗体的句柄
.cbSize = Len(TheData)
.HIcon = frm.Icon.Handle 'frm.Icon.Handle指向主窗体的图标
.UFlags = NIF_ICON
.UCallbackMessage = TRAY_CALLBACK
'作用是允许返回消息,在下一节中会有详细解释。
.UFlags = .UFlags Or NIF_MESSAGE
.cbSize = Len(TheData)
End With
Shell_NotifyIcon NIM_ADD, TheData
'根据前面定义NIM_ADD,设置为“添加模式”,然后添加
2、删去图标
With TheData
.UFlags = 0
End With
Shell_NotifyIcon NIM_DELETE, TheData
'根据前面定义NIM_DELETE,设置为“删除模式”
3、更改图标
With TheData
.HIcon = pic.Handle
'pic是图片狂PictureBox,存放图标文件
.UFlags = NIF_ICON
End With
Shell_NotifyIcon NIM_MODIFY, TheData
'根据前面定义NIM_MODIFY,设置为“更改模式”
4、为图标添加浮动提示信息
With TheData
.SzTip = tip & vbNullChar
'tip是字符串string,存储提示信息
.UFlags = NIF_TIP
'指明要对浮动提示进行设置
End With
Shell_NotifyIcon NIM_MODIFY, TheData
'根据前面定义NIM_MODIFY,设置为“修改模式”
Declare Function CallWindowProc Lib "user32" Alias "CallWindowProcA" (ByVal lpPrevWndFunc As Long, ByVal HWnd As Long, ByVal Msg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal HWnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) 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 Type NOTIFYICONDATA '托盘结构
cbSize As Long
hwnd As Long
uID As Long
uFlags As Long
uCallbackMessage As Long
hIcon As Long
szTip As String * 128
dwState As Long
dwStateMask As Long
szInfo As String * 256
uTimeoutAndVersion As Long
szInfoTitle As String * 64
dwInfoFlags As Long
End Type
Private Declare Function Shell_NotifyIcon Lib "shell32" Alias "Shell_NotifyIconA" (ByVal dwMessage As Long, pnid As NOTIFYICONDATA) As Boolean '托盘函数
Dim TrayI As NOTIFYICONDATA
Private Sub Command1_Click() '气泡提示(别忘了加一个command1控件)
Dim infotitle
infotitle = "题目"
Dim info
info = "内容"
With TrayI
.cbSize = Len(TrayI)
.hwnd = Form1.hwnd
.uID = vbNull
.uFlags = NIF_INFO
.dwInfoFlags = niif_info
.szInfoTitle = infotitle & vbNullChar
.szInfo = info & vbNullChar
End With
Shell_NotifyIcon NIM_MODIFY, TrayI
End Sub
Private Sub Form_Load()
Dim Title_tray As String
Title_tray = "我爱你"
With TrayI
.cbSize = Len(TrayI)
.hwnd = Form1.hwnd
.uID = vbNull
.uFlags = NIF_ICON Or NIF_TIP Or NIF_MESSAGE
.uCallbackMessage = WM_MOUSEMOVE
.hIcon = Form1.Icon
.szTip = Title_tray & vbNullChar
End With
Call Shell_NotifyIcon(NIM_ADD, TrayI)
End Sub
Private Sub Form_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
If Button = 1 Then
Me.WindowState = vbNormal
Me.Visible = True
' Form1.PopupMenu Form1.bb
End If
If Button = 2 Then
'右键
End If
End Sub
Private Sub Timer1_Timer()
Dim a
a = 1
End Sub
Private Sub Form_Resize()
If Me.WindowState = vbMinimized Then
Me.Visible = False
End If
End Sub
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 Const WM_SYSCOMMAND = &H112
Private Const SC_MOVE = &HF010&
Private Const SC_RESTORE = &HF120&
Private Const SC_SIZE = &HF000&
Private Sub Form_Load()
If WindowState = vbMinimized Then
LastState = vbNormal
Else
LastState = WindowState
End If
AddToTray Me, mnuTray
SetTrayTip "VB Helper tray icon program"
End Sub
' Enable the correct tray menu items.
Private Sub Form_Resize()
Select Case WindowState
Case vbMinimized
mnuTrayMaximize.Enabled = True
mnuTrayMinimize.Enabled = False
mnuTrayMove.Enabled = False
mnuTrayRestore.Enabled = True
mnuTraySize.Enabled = False
Case vbMaximized
mnuTrayMaximize.Enabled = False
mnuTrayMinimize.Enabled = True
mnuTrayMove.Enabled = False
mnuTrayRestore.Enabled = True
mnuTraySize.Enabled = False
Case vbNormal
mnuTrayMaximize.Enabled = True
mnuTrayMinimize.Enabled = True
mnuTrayMove.Enabled = True
mnuTrayRestore.Enabled = False
mnuTraySize.Enabled = True
End Select
If WindowState <> vbMinimized Then _
LastState = WindowState
End Sub
' Important! Remove the tray icon.
Private Sub Form_Unload(Cancel As Integer)
RemoveFromTray
End Sub
Private Sub mnuFileExit_Click()
Unload Me
End Sub
Private Sub mnuTrayClose_Click()
Unload Me
End Sub
Private Sub mnuTrayMaximize_Click()
WindowState = vbMaximized
End Sub
Private Sub mnuTrayMinimize_Click()
WindowState = vbMinimized
End Sub
Private Sub mnuTrayMove_Click()
SendMessage hwnd, WM_SYSCOMMAND, _
SC_MOVE, 0&
End Sub
Private Sub mnuTrayRestore_Click()
SendMessage hwnd, WM_SYSCOMMAND, _
SC_RESTORE, 0&
End Sub
Private Sub mnuTraySize_Click()
SendMessage hwnd, WM_SYSCOMMAND, _
SC_SIZE, 0&
End Sub
类模块APIStuff的代码
Option Explicit
Public OldWindowProc As Long
Public TheForm As Form
Public TheMenu As Menu
Declare Function CallWindowProc Lib "user32" Alias "CallWindowProcA" (ByVal lpPrevWndFunc As Long, ByVal hwnd As Long, ByVal Msg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
Declare Function Shell_NotifyIcon Lib "shell32.dll" Alias "Shell_NotifyIconA" (ByVal dwMessage As Long, lpData As NOTIFYICONDATA) As Long
Public Const WM_USER = &H400
Public Const WM_LBUTTONUP = &H202
Public Const WM_MBUTTONUP = &H208
Public Const WM_RBUTTONUP = &H205
Public Const TRAY_CALLBACK = (WM_USER + 1001&)
Public Const GWL_WNDPROC = (-4)
Public Const GWL_USERDATA = (-21)
Public Const NIF_ICON = &H2
Public Const NIF_TIP = &H4
Public Const NIM_ADD = &H0
Public Const NIF_MESSAGE = &H1
Public Const NIM_MODIFY = &H1
Public Const NIM_DELETE = &H2
Public Type NOTIFYICONDATA
cbSize As Long
hwnd As Long
uID As Long
uFlags As Long
uCallbackMessage As Long
hIcon As Long
szTip As String * 64
End Type
Private TheData As NOTIFYICONDATA
' *********************************************
' The replacement window proc.
' *********************************************
Public Function NewWindowProc(ByVal hwnd As Long, ByVal Msg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
If Msg = TRAY_CALLBACK Then
' The user clicked on the tray icon.
' Look for click events.
If lParam = WM_LBUTTONUP Then
' On left click, show the form.
If TheForm.WindowState = vbMinimized Then _
TheForm.WindowState = TheForm.LastState
TheForm.SetFocus
Exit Function
End If
If lParam = WM_RBUTTONUP Then
' On right click, show the menu.
TheForm.PopupMenu TheMenu
Exit Function
End If
End If
' Send other messages to the original
' window proc.
NewWindowProc = CallWindowProc( _
OldWindowProc, hwnd, Msg, _
wParam, lParam)
End Function
' *********************************************
' Add the form's icon to the tray.
' *********************************************
Public Sub AddToTray(frm As Form, mnu As Menu)
' ShowInTaskbar must be set to False at
' design time because it is read-only at
' run time.
' Save the form and menu for later use.
Set TheForm = frm
Set TheMenu = mnu
' Install the new WindowProc.
OldWindowProc = SetWindowLong(frm.hwnd, _
GWL_WNDPROC, AddressOf NewWindowProc)
' Install the form's icon in the tray.
With TheData
.uID = 0
.hwnd = frm.hwnd
.cbSize = Len(TheData)
.hIcon = frm.Icon.Handle
.uFlags = NIF_ICON
.uCallbackMessage = TRAY_CALLBACK
.uFlags = .uFlags Or NIF_MESSAGE
.cbSize = Len(TheData)
End With
Shell_NotifyIcon NIM_ADD, TheData
End Sub
' *********************************************
' Remove the icon from the system tray.
' *********************************************
Public Sub RemoveFromTray()
' Remove the icon from the tray.
With TheData
.uFlags = 0
End With
Shell_NotifyIcon NIM_DELETE, TheData
' Restore the original window proc.
SetWindowLong TheForm.hwnd, GWL_WNDPROC, _
OldWindowProc
End Sub
' *********************************************
' Set a new tray tip.
' *********************************************
Public Sub SetTrayTip(tip As String)
With TheData
.szTip = tip & vbNullChar
.uFlags = NIF_TIP
End With
Shell_NotifyIcon NIM_MODIFY, TheData
End Sub
' *********************************************
' Set a new tray icon.
' *********************************************
Public Sub SetTrayIcon(pic As Picture)
' Do nothing if the picture is not an icon.
If pic.Type <> vbPicTypeIcon Then Exit Sub
' Update the tray icon.
With TheData
.hIcon = pic.Handle
.uFlags = NIF_ICON
End With
Shell_NotifyIcon NIM_MODIFY, TheData
End Sub
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