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Task Bar Icons

Posted on 2001-08-14
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Last Modified: 2010-05-02
So I've successfully added an icon to the system tray for my app and defined the mouse clicks and such, only they don't work.  When I try to get the values for them, they are constant 34's and a right-button doubleclick is 35.  Outside of that, it doesn't work.  Here's my code...


Private 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

'Declare the constants for the API function. These constants can be
'found in the header file Shellapi.h.

'The following constants are the messages sent to the
'Shell_NotifyIcon function to add, modify, or delete an icon from the
'taskbar status area.
Private Const NIM_ADD = &H0
Private Const NIM_MODIFY = &H1
Private Const NIM_DELETE = &H2

'The following constant is the message sent when a mouse event occurs
'within the rectangular boundaries of the icon in the taskbar status
'area.
Private Const WM_MOUSEMOVE = &H200

'The following constants are the flags that indicate the valid
'members of the NOTIFYICONDATA data type.
Private Const NIF_MESSAGE = &H1
Private Const NIF_ICON = &H2
Private Const NIF_TIP = &H4

'The following constants are used to determine the mouse input on the
'the icon in the taskbar status area.

'Left-click constants.
Private Const WM_LBUTTONDBLCLK = &H203   'Double-click
Private Const WM_LBUTTONDOWN = &H201     'Button down
Private Const WM_LBUTTONUP = &H202       'Button up

'Right-click constants.
Private Const WM_RBUTTONDBLCLK = &H206   'Double-click
Private Const WM_RBUTTONDOWN = &H204     'Button down
Private Const WM_RBUTTONUP = &H205       'Button up

'Declare the API function call.
Private Declare Function Shell_NotifyIcon Lib "shell32" Alias "Shell_NotifyIconA" (ByVal dwMessage As Long, pnid As NOTIFYICONDATA) As Boolean

'Dimension a variable as the user-defined data type.
Dim nid As NOTIFYICONDATA

Private Sub Form_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
    Dim msg As Long
   
    If Moving Then
        Me.Left = Me.Left + X - mX
        Me.Top = Me.Top + Y - mY
    Else
        'Event occurs when the mouse pointer is within the rectangular
        'boundaries of the icon in the taskbar status area.
   
        msg = X / Screen.TwipsPerPixelX

        'when not commented out, the following line tells me the value of msg.  because 34
        'happens whenever the mouse is over it and even if it's not moving, I sometimes add
        'If msg <> 34 Then
        'MsgBox "msg=" & msg & vbCrLf & "x=" & X & vbCrLf & "y=" & Y & vbCrLf & "TwipsX=" & Screen.TwipsPerPixelX & vbCrLf & "TwipsY=" & Screen.TwipsPerPixelY
        Select Case msg
            Case WM_LBUTTONDOWN
                MsgBox "lbd"
            Case WM_LBUTTONUP
                MsgBox "ldu"
            Case WM_LBUTTONDBLCLK
                MsgBox "lbdc"
            Case WM_RBUTTONDOWN
                MsgBox "rbd"
            Case WM_RBUTTONUP
                MsgBox "rbu"
            Case WM_RBUTTONDBLCLK
                MsgBox "rbdc"
        End Select
 
    End If
End Sub

Private Sub Form_Load()
       nid.cbSize = Len(nid)
       nid.hWnd = MainForm.hWnd
       nid.uId = vbNull
       nid.uFlags = NIF_ICON Or NIF_TIP Or NIF_MESSAGE
       nid.uCallBackMessage = WM_MOUSEMOVE
       nid.hIcon = MainForm.Icon
       nid.szTip = "Taskbar Status Area Sample Program" & vbNullChar
   
       'Call the Shell_NotifyIcon function to add the icon to the taskbar
       'status area.
       Shell_NotifyIcon NIM_ADD, nid
End Sub



So what do I have to do to make the buttons work?
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Question by:Lee W, MVP
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8 Comments
 
LVL 20

Expert Comment

by:hes
Comment Utility
Take a look at ths example

http://www.allapi.net/api/api333.php
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LVL 95

Author Comment

by:Lee W, MVP
Comment Utility
I'll look it over in greater detail shortly, however, can you see anything wrong with my code?
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Expert Comment

by:JanusFury
Comment Utility
Um, I don't think you're supposed to get the Message number from the X location, just a guess... I haven't worked with the system tray directly from a form.
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Expert Comment

by:hes
Comment Utility
I think you have to get the x in the mousedown event not the mousemove
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LVL 12

Accepted Solution

by:
jgv earned 150 total points
Comment Utility
Try this:

If Me.ScaleMode = vbPixels Then
    msg = X
Else
    msg = X / Screen.TwipsPerPixelX
End If
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Author Comment

by:Lee W, MVP
Comment Utility
jgv - perfect - you're a god, thank you.  (well... maybe a demi-god)
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Expert Comment

by:JanusFury
Comment Utility
??? what was msg for anyway? I'm a bit confused as to how it has to do with X and Pixels O_o
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Author Comment

by:Lee W, MVP
Comment Utility
Anyone?  I just cut and paste from a sample on www.vbcode.com, making a couple of minor changes.
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