Declare Function Shell_NotifyIcon Lib "shell32.dll" Alias _
"Shell_NotifyIconA" (ByVal dwMessage As Long, lpData As _ NOTIFYICONDATA) As Long 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 Public Const NIM_ADD = &H0 Public Const NIM_MODIFY = &H1 Public Const NIM_DELETE = &H2 Public Const NIF_MESSAGE = &H1 Public Const NIF_ICON = &H2 Public Const NIF_TIP = &H4 'Make your own constant, e.g.: Public Const NIF_DOALL = NIF_MESSAGE Or NIF_ICON Or NIF_TIP Public Const WM_MOUSEMOVE = &H200 Public Const WM_LBUTTONDBLCLK = &H203 Public Const WM_LBUTTONDOWN = &H201 Public Const WM_RBUTTONDOWN = &H204 '2) Add a form to the project, and add the following code: Public Sub CreateIcon() Dim Tic As NOTIFYICONDATA Tic.cbSize = Len(Tic) Tic.hwnd = Picture1.hwnd Tic.uID = 1& Tic.uFlags = NIF_DOALL Tic.uCallbackMessage = WM_MOUSEMOVE Tic.hIcon = Picture1.Picture Tic.szTip = "Visual Basic Demo Project" & Chr$(0) erg = Shell_NotifyIcon(NIM_ADD, Tic) End Sub Public Sub DeleteIcon() Dim Tic As NOTIFYICONDATA Tic.cbSize = Len(Tic) Tic.hwnd = Picture1.hwnd Tic.uID = 1& erg = Shell_NotifyIcon(NIM_DELETE, Tic) End Sub '3) Add two command buttons (command1 and command2) and a 'picture box (picture1) to the form. For the picture 'property of the form, select an icon. 'To to Click event of Command1, add the following code: CreateIcon 'To the Click event of Command2, add the following code: DeleteIcon 'To the MouseMove event of Picture1, add the following code: X = X / Screen.TwipsPerPixelX Select Case X Case WM_LBUTTONDOWN Caption = "Left Click" Case WM_RBUTTONDOWN Caption = "Right Click" Case WM_MOUSEMOVE Caption = "Move" Case WM_LBUTTONDBLCLK Caption = "Double Click" End Select '4) Run the project. ' Click on Command1. ' The icon you selected in Picture1 should appear in the ' tray area. Now, move the mouse over the icon. ' The caption of the form should change to "Move". ' Left click the icon, and the caption will change to ' "Left". Right click the icon, and the caption will ' change to "Right". Double Click the icon, and the ' caption will change to "Double". To delete the icon ' from the tray, click Command2. One of the questions that occurs most often in the VB Q and A forum is how to add an icon to the tray area of the Windows 95 taskbar. This tip will show you how to add and delete the icon, and also trap the mouse events. |