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Overview

The Tray Icon Info application lets you enumerate your system tray icons and rearrange their positions, so that you can have your more frequently used icons positioned to the left most side (or right most depending on your personal preference). I wrote this as I got used to having the MSN Messenger icon on the left most side of the tray and found it annoying and inconvenient when newly added icons pushed it to the right. I had to exit and restart MSN Messenger to reposition it where I wanted. This application simplifies things for me.

Supported OS

This application only works on Windows XP. It may run on Windows 2003 too, but since I wasn't sure and since I didn't have the option to test it out, I have a version check and the program exits if it's a non-XP OS. If anyone's interested, they can comment out the version check and run it in on 2003 - but I have no idea as to whether it'll work or not.

Notes

Technical notes

The trick used here is to enumerate the buttons of the ToolbarWindow32 window that represents the system tray. The following code is used to locate this window (routine FindWindow/FindWindowEx stuff) :-

HWND FindTrayToolbarWindow()
{
    HWND hWnd = ::FindWindow(_T("Shell_TrayWnd"), NULL);
    if(hWnd)
    {
        hWnd = ::FindWindowEx(hWnd,NULL,_T("TrayNotifyWnd"), NULL);
        if(hWnd)
        {
            hWnd = ::FindWindowEx(hWnd,NULL,_T("SysPager"), NULL);
            if(hWnd)
            {                
                hWnd = ::FindWindowEx(hWnd, NULL,_T("ToolbarWindow32"), NULL);
            }
        }
    }
    return hWnd;
}

Now I retrieve the count of tray icons :-

int count = (int)::SendMessage(m_hTrayWnd, TB_BUTTONCOUNT, 0, 0);

The number won't match the number of visible icons because of some hidden icons inserted by Explorer + the Hide Inactive Icons setting may be enabled.

BTW to retrieve toolbar info for each button, I use my CProcessData class. [CProcessData is a template class that makes it easy to use data allocated in a different process, and is useful when making inter-process SendMessage/PostMessage calls]

The dwData member of each TBBUTTON structure of the toolbar points to an undocumented structure. The first few bytes of the structure are as follows (on XP anyway) :-

struct TRAYDATA
{
    HWND hwnd;                
    UINT uID;                
    UINT uCallbackMessage;    
    DWORD Reserved[2];        
    HICON hIcon;                
};

There's more info, but I am not sure what the rest of it means. Reserved[0] has something to do with the visibility state of an icon when the Hide Inactive Icons setting is enabled, but it's behavior was too sporadic for me to give it a proper meaning and since I didn't really want that info, I didn't bother too much. All my Google searches on this undocumented structure resulted in nothing. It's times like this when you wish Windows provided full source code :-(

Anyway here's the code I use to retrieve the rest of the information I require.

CProcessData<TBBUTTON> data(dwTrayPid);
TBBUTTON tb = {0};
TRAYDATA tray = {0};
TrayItemInfo tifo = {0};

for(int i=0; i<count; i++)
{        
    ::SendMessage(m_hTrayWnd, TB_GETBUTTON, i, (LPARAM)data.GetData());        
    data.ReadData(&tb);            
    data.ReadData<TRAYDATA>(&tray,(LPCVOID)tb.dwData);

    DWORD dwProcessId = 0;
    GetWindowThreadProcessId(tray.hwnd,&dwProcessId);

    tifo.sProcessPath = GetFilenameFromPid(dwProcessId);        

    wchar_t TipChar;
    wchar_t sTip[1024] = {0};
    wchar_t* pTip = (wchar_t*)tb.iString;        

    if(!(tb.fsState&TBSTATE_HIDDEN))
    {            
        int x = 0;
        do 
        {    
            if(x == 1023)
            {
                wcscpy(sTip,L"[ToolTip was either too long or not set]");    
                break;
            }
            data.ReadData<wchar_t>(&TipChar, (LPCVOID)pTip++); 
        }while(sTip[x++] = TipChar);
    }
    else
        wcscpy(sTip,L"[Hidden Icon]");                

    USES_CONVERSION;
    tifo.sTip = W2T(sTip);

    tifo.hwnd = tray.hwnd;
    tifo.uCallbackMessage = tray.uCallbackMessage;
    tifo.uID = tray.uID;

    tifo.bVisible = !(tb.fsState & TBSTATE_HIDDEN);

    int iconindex = 0;
    ICONINFO  iinfo;
    if(GetIconInfo(tray.hIcon,&iinfo) != 0)
    {            
        iconindex = m_Image16List.Add(tray.hIcon);
    }

For the rest of the code, see the included source code zip.

Thanks

History

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GeneralWrong code and method Pin
kilt		1:18 14 Sep '09  
GeneralVista 32 and Vista 64 Pin
Chris Havelick		4:25 10 Apr '09  
QuestionWhy right click menu are sometime sticky? Pin
lerognon		10:26 21 Feb '09  
AnswerRe: Why right click menu are sometime sticky? Pin
Andreone		4:49 19 Aug '09  
GeneralCan we hide a particular icon in the system tray? [modified] Pin
Kishore_Vuppala		18:54 4 Feb '09  
Newsabout "GetIconInfo" Pin
oneg661		6:26 5 Jan '09  
Generalnotes Pin
jo0ls		2:50 16 Dec '08  
Questionclass Pin
gq_the_fallen_angel		7:49 16 Jun '08  
Questionhide a single tray icon from system tray Pin
Jayapal Chandran		1:27 15 Mar '08  
GeneralSome icons' handle of tray buttions are invalid Pin
gshine610		21:06 12 Aug '07  
GeneralWorks on Vista Pin
Thomassen		1:31 16 Jun '07  
QuestionAnyone know of a similar program that just lists the systray icons? Pin
badbob001		7:36 11 May '07  
AnswerRe: Anyone know of a similar program that just lists the systray icons? Pin
lerognon		10:23 21 Feb '09  
GeneralJust what I needed! Pin
Hans Dietrich		2:14 9 Apr '07  
GeneralRe: Just what I needed! Pin
Nishant Sivakumar		2:54 9 Apr '07  
GeneralRe: Just what I needed! Pin
Hans Dietrich		3:00 9 Apr '07  
GeneralHowto make ShellTrayInfo work automatically at boot? Pin
5h17h34d		18:19 13 Feb '07  
GeneralRe: Howto make ShellTrayInfo work automatically at boot? Pin
S.H.Bouwhuis		14:14 18 Jun '07  
GeneralCompiling Error Help Pin
swarup		1:28 9 Dec '06  
Generalhow to make Static Executeable/portable executeable Pin
murtazadhari		4:19 11 Nov '06  
Generali want to refer code written by MFC(Visual C++6.0) about "Programmable Calculator" Pin
amatuer_vn03		17:52 15 Sep '06  
GeneralDid you ever find out why some icons dont appear? Pin
plehxp		2:20 6 Sep '06  
QuestionNon-MFC Pin
spamna		7:21 19 Aug '06  
AnswerRe: Non-MFC Pin
Nishant Sivakumar		7:28 19 Aug '06  
GeneralRe: Non-MFC Pin
spamna		11:39 19 Aug '06  
Last Visit: 10:11 22 Nov '09     Last Update: 10:11 22 Nov '09 12 Next »


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