to recreate the system tray icon when explorer crashes

[myaman]

How to recreate the system tray icon when explorer crashes ?


My application shows an icon in System tray. But if the explorer.exe crashes and again i start explorer.exe from task manager, the icon fails to show up in the task bar.
Any idea how to recreate the icon ?

Aman

[myaman]

Any idea how to bring the icon again in systray once explorer.exe crashes

[RCFox]

Well... I know that with Win98, if that happens, I close an app and then call it up again. The icon shows again. Don't know if this is helpful in your case.

[myaman]

I also dont want to restart my application,
U might have observer that icons for Yahoo messanger and MSN, and Outlook etc comes by itself in the systray after explorer.exe is started again. I want the same thing for my application.

[NoHero]

look at this code from the msdn:


UINT s_uTaskbarRestart = 0;

s_uTaskbarRestart = RegisterWindowMessage(TEXT("TaskbarCreated"));


the explorer registers this message to notify each window of an taskbar refresh. If the message occures you have to repaint your tray icon:


LRESULT CALLBACK WndProc(HWND hWnd, UINT uMessage, WPARAM wParam,
LPARAM lParam)
{
static UINT s_uTaskbarRestart;

switch(uMessage)
{
case WM_CREATE:
s_uTaskbarRestart = RegisterWindowMessage(TEXT("TaskbarCreated"));
break;

default:
if(uMessage == s_uTaskbarRestart)
AddTaskbarIcons();
break;
}

return DefWindowProc(hWnd, uMessage, wParam, lParam);
}


hope this helps

[myaman]

The DefWindowProc is giving following error
'DefWindowProcA' : no overloaded function takes 4 parameters

[NoHero]

and using ...


::DefWindowProc( /* parameter in here */ );


... ?

its strange beauce the DefWindowProc HAS 4 parameters ... :confused:

[usman999_1]

The DefWindowProc is giving following error
'DefWindowProcA' : no overloaded function takes 4 parameters
The compiler is trying to invoke CWnd::DefWindowProc either do

::DefWindowProc(hWnd, uMessage, wParam, lParam); // Note the :: before the function.

Or do something like

DefWindowProc(uMessage, wParam, lParam);


Hope this helps,
Regards,
Usman.

[NoHero]

The compiler is trying to invoke CWnd::DefWindowProc either do

::DefWindowProc(hWnd, uMessage, wParam, lParam); // Note the :: before the function.

Or do something like

DefWindowProc(uMessage, wParam, lParam);


Hope this helps,
Regards,
Usman.

take a look at my last post ;)

[usman999_1]

Well HERO dont you think if the person knew the difference between the global & instance functions, he wouldn't have asked in the first place. I can only say your last post don't go far enough ;).
Kind Regards,
Usman.

[NoHero]

Well HERO dont you think if the person knew the difference between the global & instance functions, he wouldn't have asked in the first place. I can only say your last post don't go far enough ;).
Kind Regards,
Usman.

Ok, thats right ...

p.s.: NOhero ... I hate compliments about my name, by just remove the "no" ... ;)

[myaman]

Actually i handled WM_CREATE message in OnCreate metfod and used
WM_TASKBARCREATED = ::RegisterWindowMessage(_T("TaskbarCreated"));

then i handled WM_TASKBARCREATED message to add the icon to the task bar.

But this time Shell_NotifyIcon(NIM_ADD, &m_nid); returns false.

I dont know WHY????

I am using a common function to add icon in systray say AddIconSysTray both from OnCreate and TASKBARCREATED handler

Any idea why Shell_NotifyIcon(NIM_ADD, &m_nid); is facing second time.

[NoHero]

Actually i handled WM_CREATE message in OnCreate metfod and used
WM_TASKBARCREATED = ::RegisterWindowMessage(_T("TaskbarCreated"));

then i handled WM_TASKBARCREATED message to add the icon to the task bar.

But this time Shell_NotifyIcon(NIM_ADD, &m_nid); returns false.

I dont know WHY????

I am using a common function to add icon in systray say AddIconSysTray both from OnCreate and TASKBARCREATED handler

Any idea why Shell_NotifyIcon(NIM_ADD, &m_nid); is facing second time.

try incrementing the iID member of the NOTFIYICONDATA structure as long as Shell_NotifyIcon returns false. That helped in my case, but I can give a hint: I wrote a programm severel months ago, using a taskbar icon including refreshing it. Its open source, so if you want it, I give it to you. its using a class to provide Shell Icon handling. Do you want/need it?

[myaman]

Thanks NoHero (see this time NO is removed from ur name :wave: )


Its working now, but still if share the code it can help me in any other way