Idle

[Scott Turchin]

I have a program that runs silently (no visible interaction) when a PC is started up.

If I want that application to remove it'self from the taskbar, and just sit idle...how would I do that?

I don't draw a gui and I just want it to sit there and spin..
It is a registered class also..

Scott

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Scott
mailto:[email protected][email protected]</A>

[Semen Matusovski]

Scott --
It's necessary to use %WS_EX_TOOLWINDOW

   #Compile Exe
   #Register None
   #Dim All
   #Include "Win32Api.Inc"
   
   CallBack Function DlgProc
      Static nt As Long
      Select Case CbMsg
         Case %WM_INITDIALOG: SetTimer CbHndl, 1, 2000, ByVal 0
         Case %WM_PAINT: ShowWindow CbHndl, 0
         Case %WM_TIMER: Beep: Incr nt: If nt >= 5 Then _
                         KillTimer CbHndl, 1: Dialog End CbHndl
      End Select
   End Function
   
   Function PbMain
      Local hDlg As Long
      Dialog New 0, "Semen", ,, 50,50, %WS_POPUP, %WS_EX_TOOLWINDOW To hDlg
      Dialog Show Modeless hDlg Call DlgProc
      Local x As Long
      Do
         Dialog DoEvents To x&
         If x& = 0 Then Exit Do
      Loop
      MsgBox "Ok"
   End Function

I used Modeless, because I saw such recommendation.
But at least in some OSes it's not necessary.



[This message has been edited by Semen Matusovski (edited April 08, 2000).]

[Scott Turchin]

OK that might work, but deal is that I will need a signal from Windows ie WM_SHUTDOWN or something like that to indicate the user is eiter logging off or rebooting...
I suppose WM_CLOSE would be the one I am looking for?

Scott



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Scott
mailto:[email protected][email protected]</A>

[Semen Matusovski]

Scott --
You should process %WM_QUERYENDSESSION
But don't forget that exist ExitWindowsEx with EWX_FORCE.

There is one strange monent with %WM_QUERYENDSESSION (or I don't understand win32.hlp ?).
On my PC, Win2000, DDT, to refuse from logoff/shutdown it's necessary
CASE %WM_QUERYENDSESSION: Function = %True: Exit Function
(I expected Function = %False)



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[Scott Turchin]

I have a Windows 2000 server here at home if you want me to do any testing, I built this monster machine just for Windows 2000


Anyway, Not sure on the QUERYENDSESSION except to say that Windows MAY try to process THAT ONE first before it does the EWX_FORCE, which makes sense to me...so it should return a true????


Scott

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Scott
mailto:[email protected][email protected]</A>

[Semen Matusovski]

Scott --
This works on my PC (refuse by %True). Exactly this is stange.

   #Compile Exe
   #Register None
   #Dim All
   #Include "Win32Api.Inc"

   CallBack Function DlgProc
      Select Case CbMsg
         Case %WM_PAINT: ShowWindow CbHndl, 0
         Case %WM_QUERYENDSESSION
              MsgBox "Refuse": Function = %True: Exit Function

      End Select
   End Function

   Function PbMain
      Local hDlg As Long
      Dialog New 0, "Semen", ,, 50,50, %WS_POPUP, %WS_EX_TOOLWINDOW To hDlg
      Dialog Show Modeless hDlg Call DlgProc
      Local x As Long
      Do
         Dialog DoEvents To x&
         If x& = 0 Then Exit Do
      Loop
   End Function

About ExitWindowsEx.
If one app termnates other apps with parameter EWX_FORCE, your app will not receive %WM_QUERYENDSESSION.
Of course, if it will be done manually by Start - Shut down, your app will receive this message.




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[Scott Turchin]

So if I am terminated by another app or the three finger salute, then I would expect to receive %WM_DESTROY, is that a safe assumption???


Thanks for the info too!

Scott


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Scott
mailto:[email protected][email protected]</A>

[Semen Matusovski]

Scott --
As I understand, your "hidden" app never will receive WM_DESTROY:

1) If user will terminate your app by Ctrl-Alt-Del OR 
   "End-Process" using Task-Manager your app receives nothing.
2) The same if another app uses ExitWindowsEx with EWX_FORCE to log off or reboot (this is abnormal way).

3) If user manually clicks Start - Shut Down - Log Off / Shut Down / Restart OR
   another app uses ExitWindowsEx with EWX_LOGOFF/EWX_POWEROFF/WX_REBOOT/EWX_SHUTDOWN your app WILL receive %WM_QUERYENDSESSION and you can agree or disagree.

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