vb实现系统托盘的一个小问题，请大家帮帮！

[mickey_7]

我写系统托盘程序时，点按钮可以把程序最小化到任务栏，现在如何处理点任务栏图标重新出现窗口这个过程。我是菜鸟，请多指教啊！
代码如下：
module中：

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

Public a As Long

'以下为 Shell_NotifyIcon将用到的常量

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 NIM_MODIFY = &H1

'Shell_NotifyIcon的函数声明

Declare Function Shell_NotifyIcon Lib "shell32.dll" Alias "Shell_NotifyIconA" _
(ByVal dwMessage As Long, lpData As NOTIFYICONDATA) As Long

'处理消息将用到的结构、常量、API声明

Type POINTAPI

X As Long

Y As Long

End Type

Type Msg

hwnd As Long

message As Long

wParam As Long

lParam As Long

time As Long

pt As POINTAPI

End Type

Public Const WM_USER = &H400

Public Const WM_RBUTTONDOWN = &H204

Public Const WM_LBUTTONDOWN = &H201

Public Const GWL_WNDPROC = -4

Public trayflag As Boolean

Global lpPrevWndProc As Long

Global gHW As Long

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

'以下过程为消息循环处理

Function WindowProc(ByVal hw As Long, ByVal uMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long

If uMsg = WM_USER + 100 Then '检测到鼠标点动托盘图标

Select Case lParam

Case WM_LBUTTONDBLCLK

MsgBox "d"



Case Else

End Select

Else '调用缺省窗口指针
MsgBox "a"
WindowProc = CallWindowProc(lpPrevWndProc, hw, uMsg, wParam, lParam)

End If

End Function


frm中：

Dim MyNot As NOTIFYICONDATA '定义一个托盘结构


Private Sub Command1_Click() '按下创建按钮

Dim hh As Long

With MyNot

.hIcon = Form1.Icon

.hwnd = Form1.hwnd

.szTip = "托盘图标" & Chr(&H0)

.uCallbackMessage = WM_USER + 100

.uFlags = NIF_ICON Or NIF_TIP Or NIF_MESSAGE

.uID = 1

.cbSize = Len(MyNot)

End With

hh = Shell_NotifyIcon(NIM_ADD, MyNot) '添加一个托盘图标


trayflag = True '图标添加后trayflag为真

End Sub

Private Sub Form_Load()

gHW = Me.hwnd '取得本窗体指针


hook

End Sub

Public Sub hook()


lpPrevWndProc = SetWindowLong(gHW, GWL_WNDPROC, AddressOfWindowProc)

End Sub

Public Sub Unhook()

Dim temp As Long

temp = SetWindowLong(gHW, GWL_WNDPROC, lpPrevWndProc)

End Sub

[yunfeng007]

在这里将
If uMsg = WM_USER + 100 Then '检测到鼠标点动托盘图标

Select Case lParam

Case WM_LBUTTONDBLCLK

MsgBox "d" '-----这里修改为你要显示窗口代码
form1.show


Case Else

End Select

[SoHo_Andy]

托盘程序的模块详细代码

Option Explicit
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
Public a As Long
'以下为 Shell_NotifyIcon将用到的常量
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 NIM_MODIFY = &H1
'Shell_NotifyIcon的函数声明
Declare Function Shell_NotifyIcon Lib "shell32.dll" Alias "Shell_NotifyIconA" _
(ByVal dwMessage As Long, lpData As NOTIFYICONDATA) As Long
'处理消息将用到的结构、常量、API声明
Type POINTAPI
x As Long
y As Long
End Type
Type Msg
hwnd As Long
message As Long
wParam As Long
lParam As Long
time As Long
pt As POINTAPI
End Type
Public Const WM_USER = &H400
Public Const WM_RBUTTONDOWN = &H204
Public Const WM_LBUTTONDOWN = &H201
Public Const GWL_WNDPROC = -4
Public trayflag As Boolean
Global lpPrevWndProc As Long
Global gHW As Long
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

'以下过程为消息循环处理

Function WindowProc(ByVal hw As Long, ByVal uMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
If hw = Form1.hwnd And uMsg = WM_USER + 100 Then '检测到鼠标点动托盘图标
Select Case lParam
Case WM_RBUTTONDOWN '鼠标右键按下
'你的代码
Form1.PopupMenu Form1.traymnu '弹出菜单
Case WM_LBUTTONDOWN '鼠标左键按下
'你的代码
Form1.PopupMenu Form1.mnutray2 '弹出菜单
Case Else
End Select
Else '调用缺省窗口指针
' WindowProc = CallWindowProc(lpPrevWndProc, hw, uMsg, wParam, lParam)
End If
WindowProc = CallWindowProc(lpPrevWndProc, hw, uMsg, wParam, lParam)
End Function