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上传时间: 2010-08-17
详细说明： '窗体:______________ '声明:Public LastState As Integer '为图标定义窗体信息 '使用前: 'If WindowState = vbMinimized Then ' LastState = vbNormal 'Else ' LastState = WindowState 'End If '使用: 'AddToTray Me, mnuTray '加载图标 'SetTrayTip "VB Helper tray icon program" '图标标签 'RemoveFromTray'卸载图标 '模板:_________ 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 '左击 ' 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 '右 ' 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 ...展开收缩
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