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Index > Windows > Inactivity time system wide

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MACi



Joined: 04 Sep 2004
Posts: 12
Location: Hungary
MACi
Please can you help me with a document url or would you write down how to
make a very simple systemwide user idle timeout, the same that Windows use to start screensaver: which API I must call and what are the parameters?
Question
Exactly, I want to display a little text, when I don't touch the keyboard and mouse for 5 minutes. Thanks in advance!
Confused

I tried google with 10 variations of keywords and 10 pages of every results and nothing... Sad


Last edited by MACi on 05 Sep 2004, 21:09; edited 1 time in total
Post 04 Sep 2004, 19:49
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Foamplast



Joined: 07 May 2004
Posts: 36
Location: Saratov, Russia
Foamplast
I advice you to use mouse and keyboard hooks. So then, everytime you receive a message from keyboard or mouse you may set a timer for 5 minutes, killing previous timer if there is one. If the user works, you are frequently killing your timer. If the user doesn't touch keybord and mouse, your timer will start a screensaver.
Post 04 Sep 2004, 22:05
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MACi



Joined: 04 Sep 2004
Posts: 12
Location: Hungary
MACi
Okay... but I was doing serious asm coding in DOS era last time...
Can you help me with some code snippets, how to do, please?
Post 05 Sep 2004, 17:08
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DEMON



Joined: 01 Aug 2004
Posts: 26
Location: Republic of Belarus
DEMON
Read ICZELION's tutorials Very Happy
There you can find information about hook's
Post 05 Sep 2004, 21:15
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MACi



Joined: 04 Sep 2004
Posts: 12
Location: Hungary
MACi
I've downloaded and searched through many tutorials (also Iczelion's), but didn't found hooks+systemwidetimers examples... Sad
Post 05 Sep 2004, 21:43
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Foamplast



Joined: 07 May 2004
Posts: 36
Location: Saratov, Russia
Foamplast
Well, I always wonder why do people study someone's tutorials, not official documents. If you are going to program Window's applications you should know what method of communication this OS provides. This doesn't depend on language: asm, C, Pascal or something else. ICZELION's tutorials are good enough to understand principles of Windows assembly programming, but he can not re-tell all MSDN.

I advice you to study MSDN articles about hooks.
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/winui/windowsuserinterface/windowing/hooks.asp
Post 06 Sep 2004, 22:12
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MACi



Joined: 04 Sep 2004
Posts: 12
Location: Hungary
MACi
Thanks!
So I find useful this msdn source and also I've found hooks example in Iczelion's tutorial #24, but win32 is yet strange for me (and I don't have enough free time to play much with masm32 code written for another purpose), so can anybody help with some code snippets, how to do it in a real world example, and also with some timer code snippets (you know, just simple to display a little text, when I don't touch the keyboard and mouse for some minutes), please? Confused

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MACi
Post 07 Sep 2004, 06:22
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f0dder



Joined: 19 Feb 2004
Posts: 3170
Location: Denmark
f0dder
There's a couple of ways to handle this - I'm assuming you're using a hook (although there's probably other ways - hooks should be avoided if you can, as they take system resources and can cause instability if not written properly).

Anyway, each time your hook gets fired and you detect a keypress, note current time in some variable (use GetLocalTime, GetSystemTime, or GetTickCount to get time). Either use WM_TIMER or a separate Thread to fire periodically - try to make it sleep as long as possible while not causing timing problems (with five minutes a one-minute sleep would be fine, and not take too much system resources).

Anyway, when checking timer/thread is fired, you get system time again, compare the difference between current system time and last hook-fire time - if larger than your period, act Smile
Post 09 Sep 2004, 00:00
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MACi



Joined: 04 Sep 2004
Posts: 12
Location: Hungary
MACi
Thanks, that was closer, but... there are some unclear areas, how to do...
...this doesn't work, it even cannot get to hookproc:

Code:
include '%fasminc%\win32ax.inc'

.code
 start:

 invoke SetWindowsHookEx, WH_KEYBOARD, hookproc, 0, 0
 invoke ExitProcess, 0

.end start

proc hookproc, hwnd, uMsg, idEvent, dwTime
 invoke SetTimer, 0, 1, 1000, timerproc 
 invoke MessageBox, HWND_DESKTOP, "hook installed", "hook", MB_OK
 return
endp 

proc timerproc, hwnd, uMsg, idEvent, dwTime
 invoke KillTimer, 0, 1
 invoke MessageBox, HWND_DESKTOP, "timer finished", "timer", MB_OK
 return
endp
    


...and for the mouse also the same hook with WH_MOUSE to the same hookproc?

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MACi
Post 09 Sep 2004, 07:23
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MACi



Joined: 04 Sep 2004
Posts: 12
Location: Hungary
MACi
nobody can help???
Post 21 Sep 2004, 08:32
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omega_red



Joined: 13 Mar 2004
Posts: 19
Location: Poland
omega_red
Check what SetWindowsHook returns. Check GetLastError. Because you're setting global hook, HookProc has to be in DLL.
Post 21 Sep 2004, 09:58
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MACi



Joined: 04 Sep 2004
Posts: 12
Location: Hungary
MACi
I don't know how to code dll, but this is the smaller problem, if there are exact example source codes (and I saw those for dll), the biggest problem is win32asm is not transparent for me, this is 1000 miles away from DOS ASM, and when I don't see the source code then I cannot learn swirls and catches, how to code...

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MACi
Post 21 Sep 2004, 20:32
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Foamplast



Joined: 07 May 2004
Posts: 36
Location: Saratov, Russia
Foamplast
Hello!

The attached is an example of keyboard hooking. It is a simple keylogger that writes keystrokes pressed to the file named "C:\kbd.log". This program is written in NASM, but the syntax is very close to FASM.

You can easily port this to NASM and enjoy. Feel free to ask me any questions you may have.


Description:
Download
Filename: projectx.zip
Filesize: 7.48 KB
Downloaded: 201 Time(s)

Post 21 Sep 2004, 20:53
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MACi



Joined: 04 Sep 2004
Posts: 12
Location: Hungary
MACi
Thanks, I'll examine this

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MACi
Post 23 Sep 2004, 21:25
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MACi



Joined: 04 Sep 2004
Posts: 12
Location: Hungary
MACi
I stucked on this Sad
I think I'll give a try to iczelion's tutor#24 combined with my own code above... it'll be hard for a dos coder... Confused

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MACi
Post 01 Oct 2004, 17:48
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MACi



Joined: 04 Sep 2004
Posts: 12
Location: Hungary
MACi
doesn't work! Crying or Very sad Mad
Code:
include '%fasminc%\win32ax.inc'

.data

hookflag dd FALSE
hook dd ?

.code
start:

.if   [hookflag],e,FALSE
 invoke   SetWindowsHookEx, WH_MOUSE, hookproc, 0, 0
 mov      [hook],eax
 .if      eax,ne,0
  mov       [hookflag],TRUE
 .endif
 invoke   Sleep, 30000
 invoke ExitProcess, 0
.else
 invoke      UnhookWindowsHookEx,[hook]
 invoke   ExitProcess, 0
.endif

.end start

proc hookproc, nCode, wParam, lParam
 invoke       CallNextHookEx,[hook],[nCode],[wParam],[lParam]
 invoke      SetTimer, 0, 1, 1000, timerproc
 invoke      MessageBox, HWND_DESKTOP, "hook started", "hook", MB_OK
 return
endp

proc timerproc, hWnd, uMsg, idEvent, dwTime
 invoke    KillTimer, 0, 1
 invoke      MessageBox, HWND_DESKTOP, "timer finished", "timer", MB_OK
 invoke       UnhookWindowsHookEx,[hook]
 return
endp
    

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MACi
Post 12 Nov 2004, 13:29
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MACi



Joined: 04 Sep 2004
Posts: 12
Location: Hungary
MACi
HELP PLEASE!

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MACi
Post 16 Nov 2004, 09:06
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MACi



Joined: 04 Sep 2004
Posts: 12
Location: Hungary
MACi
After many sleepless nights with writing and modifying and rewriting code... I've made it!

Can I think about myself, I'm the best asm coder in this area, because only I can do this and nobody could effectively help? Wink Moreover because this code is only one 2k exe and no dlls? Wink
Not bad from a win32 newbie, eh? Wink

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MACi
Post 17 Nov 2004, 11:54
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