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concoran wrote: I am not particularly interesting in using Mouse/Keyboard hooks since they may affect over-all computer response. Is there a way to tell MS Windows to wake up a certain CALLBACK if the user doesn't input for a certain period of time?
If you run Windows 2000 or above, you can use GetLastInputInfo() API.
See here[^].
Nobody can give you wiser advice than yourself. - Cicero
.·´¯`·->ßRÅhmmÃ<-·´¯`·.
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I am looking for some help on terminating an application after a certain period of inactivity.
I need to terminate the application if the user does not perform any actviity for certain amount of time.
Any help or direction will be appreciated.
Thanks
Sri Rama
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1) For mouse/keyboard messages pretranslate might do or setup message hooks, whatever works. If other devices are used to interact with the program you have to account for them as well.
2) Upon any of those messages you cancel the previous duration timer and set a new one.
3) If the timer ever expires you exit the application.
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Can you use a timer in your application class - likes of the of fashioned watch dog timer? Than all you have to do is reset it on any user activity or let it timeout and exit the app.
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Sriramak wrote: Any help or direction will be appreciated.
See here.
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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Nice but ... does it defeat the windows very basics?
Would you have to put this API in some kinda of wait loop?
Just wondering.
Vaclav
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Vaclav_Sal wrote: does it defeat the windows very basics?
Not sure what you mean by this.
Vaclav_Sal wrote: Would you have to put this API in some kinda of wait loop?
Most likely using WM_TIMER.
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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I tought you would have to have this GetLastInputInfo()API in a loop to monitor the inactivity.
IMHO that defeats the very essence of an event driven OS unless you "plug it in" into windows message loop of course.
Is't the timer (CTimer) already in this OS loop since it is a "windows" resource ?
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Vaclav_Sal wrote: I tought you would have to have this GetLastInputInfo()API in a loop to monitor the inactivity.
You can call SetTimer(1000), and then respond to the WM_TIMER message.
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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My app shows the dialog box in a modal (topmost) window.
The purpose of the app is to give feedback to the user about the button pressed on the keyboard, however, whenever I press the ESC or Space keys, the IDCANCEL or IDOK buttons are "pressed".
Is it possible to prevent this behavior ?
(I want those buttons only to be used by the user via mouse click to exit the app. The "Default Button" property for the buttons is set to False)
thankyou !
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you need to add a PreTranslateMsg handler and eat the Escape & Space keys.
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I am studying this now. Found a good example here http://www.codeguru.com/forum/archive/index.php/t-203713.html
thanks !!
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abiemann wrote: Is it possible to prevent this behavior ?
Yes. See here.
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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I've added BN_CLICKED handlers:
S2000_CP_DLG::OnExitOK()
S2000_CP_DLG::OnExitCANCEL()
and for good measure I've stubbed-out the base functions: (probably unnecessary)
S2000_CP_DLG::OnOK()
S2000_CP_DLG::OnCancel()
so what happens now is that when I press [Esc] the OnExitCANCEL() is called.
When I press [Enter] or [Space] the OnExitOK() is called.
but since the app has to run through some code when OK and CANCEL are clicked I can't just leave the handlers empty.
Hence, within the handlers I think I need to detect if the keyboard was used to click the button. If no, then proceed with processing and close the dialog. If yes, then exit the handler.
I just don't know how to detect if the keyboard was used to enter OnExitOK and OnExitCANCEL.
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I got it fixed:
I went back to the Dialog Editor, deleted the BN_CLICKED handlers from the IDOK and IDCANCEL buttons. Then I made the default OK and CANCEL buttons invisible and changed their captions to "ignore".
Subsequently I added 2 new buttons: "OK" and "CANCEL" and added the BN_CLICKED handlers to handle the closing of the Dialog.
Now the user can press [Enter], [Esc], and [Space] without any problem what-so-ever and when the user wants exit - the OK and CANCEL buttons will do just that 
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This one has been bugging me all day. I'm trying to fill a consoles screen with null characters using FillConsoleOutputCharacter() passing '\0' as the character. This works flawlessly in a non-unicode build, but after switching to unicode it just doesn't work.
After reading the buffer it becomes apparant that the screen was filled with spaces 0x0020. Thinking it was a problem with the null character I then tried '0x0A' and '0x000A' both of which fill the buffer with '0x25D9'.
Do I need to do anything special before trying to fill with a unicode null character, or does the function just not work in a unicode build?
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The unicode implementation is FillConsoleOutputCharacterW().
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And the ANSI implementation is FillConsoleOutputCharacterA(), both of which are mapped accordingly depending if UNICODE is defined. So how does this relate to my question?
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Brain fart, my apologies. 
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Hello 2 everyone interested!
I have installed Visual Studio 2005 8 in D:\Program Files\ and WM SDK 5.0 in C:\Program Files\.
The WM5 SDK comes with a few samples, and I've chosen the bluetooth one, named BTSeach (I've seen it between codeproject's articles, too). I've launched it from the default directory:
C:\Program Files\Windows CE Tools\wce500\Windows Mobile 5.0 Pocket PC SDK\Samples\CPP\Win32\Bluetooth
When I compile it i get 2 errors, and I didn`t modify anything (anyway it's an linking error, so I guess the filepaths aren't correctly set). The output is:
------ Build started: Project: btsearch, Configuration: Debug Windows Mobile 5.0 Pocket PC SDK (ARMV4I) ------
Linking...
btsearch.obj : error LNK2001: unresolved external symbol __GSHandlerCheck
Windows Mobile 5.0 Pocket PC SDK (ARMV4I)\Debug/btsearch.exe : fatal error LNK1120: 1 unresolved externals
Build log was saved at "file://c:\Program Files\Windows CE Tools\wce500\Windows Mobile 5.0 Pocket PC SDK\Samples\CPP\Win32\Bluetooth\btsearch\Windows Mobile 5.0 Pocket PC SDK (ARMV4I)\Debug\BuildLog.htm"
btsearch - 2 error(s), 0 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
Does any of you know where I should write the paths for files which should resolve this linking issues?
Thank you a lot!
Shpid3r
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Did you add the SDK path to Visual Studio?
Tools > Options > Projects and Solutions > VC++ Directories
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br />
Peter Weyzen<br />
Staff Engineer<br />
<A HREF="http://www.soonr.com">SoonR Inc -- PC Power delivered to your phone</A>
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I`re solved this problem, and I`d like to post here, to help one who gets stuck in the same spot.
The problem seems to be the Service Pack 1 update. This is a known issue, and on microsoft site ( http://support.microsoft.com/kb/928957/ ) it`s posted this:
Error LNK2019: unresolved external symbol __GSHandlerCheck
Samples in both the Windows Mobile 5.0 SDK for Pocket PC and the Windows Mobile 5.0 SDK for Smartphone are affected by this issue.
Visual Studio 2005 SP1 updates the Visual Studio compilers with the /GS support that is already available in Windows CE 6.0 compilers. Link errors will occur in native C++ Smart Device projects that do not explicitly link to "libcmt.lib" or that have turned off /GS, and that are running on pre-Windows Embedded CE 6.0 platforms.
To resolve this issue:
1. Explicitly include "libcmt.lib" in the list of additional libraries to link against.
2. Turn off the linker warning (/nowarn:4099)
I didn`t actually manage to do this, but I've done something else. I`ve basically searched my WM5 SDK for 'libcmt.lib' (found around 7 results) and picked the one addressing the platform I was writing code for (that is AVRM4I). And simply added it to my project (add file to project > existing file). The warn doesn`t bother me.
---------
To more projects to u all
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Can you help me.
Help to be going to create Virtual IP using "iphlp" libarary raise just there is example code using c++
wait for your advice.
thank you.
ps : thanks is add "iphlp" library fils(iphlp.h , iphlp.dll ...)
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It is been quite a while. I have a task to identify a calling Windows' batch script's name and its location. Basically, the batch script calls/spawns my C++ executable as a parent process and I failed to identify the parent. I can identify a number of different calling processes using NtQueryInformationProcess(), but failed to do so to the batch script. The main reason is that the batch process is shown as cmd.exe not a real script name.
Thanks a lot for the help.
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Hi,
I'm trying to print the name of the function I'm in for a trace routine that displays the name of the source file and perhaps the function name.
Is there a built in MACRO that already does that?
Thanks.
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