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CreateWaitableTimer is not creating Joe Moldovan18-Oct-01 21:27 Joe Moldovan 18-Oct-01 21:27  I run VS6(SP5) on Win2000(SR2). I have a one line program which will not compile. #include windows.h int APIENTRY WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance,LPSTR lpCmdLine, int nCmdShow ) { CreateWaitableTimer( NULL, TRUE, "JOE" ); return 0; } c:\develop\test\test.cpp(8) : error C2065: 'CreateWaitableTimer' : undeclared identifier To clarify the situation, I have no precompiled headers. The call definition is seen by VS because a mouse hover over the source shows the call prototype correctly. If I change windows.h to afxwin.h I get a good compile. QUESTION: Why can't I compile with windows.h? What has a Win32 API call got to do with MFC - or rather what does afxwin.h do that I don't? Thanks for any advice ! Re: CreateWaitableTimer is not creating Joe Moldovan18-Oct-01 21:30 Joe Moldovan 18-Oct-01 21:30  Forgot to mention: The MSDN example fails to compile also. Re: CreateWaitableTimer is not creating Michael Dunn18-Oct-01 22:19 Michael Dunn 18-Oct-01 22:19  Your question is answered in the VC forum FAQ. --Mike-- http://home.inreach.com/mdunn/ "....." -- Silent Bob your with and Re: CreateWaitableTimer is not creating Joe Moldovan18-Oct-01 23:14 Joe Moldovan 18-Oct-01 23:14  Thanks Michael!!! Saved me again as usual. I also found the answer in MSDN Q184796 together with an example. Are there any web sites about "AI"? Maer72718-Oct-01 21:24 Maer727 18-Oct-01 21:24  Are there any web sites about "AI(Artificial Intelligence)"? Thanks, Maer Re: Are there any web sites about "AI"? Nish Nishant18-Oct-01 23:55 Nish Nishant 18-Oct-01 23:55  try searching on google Nish Re: Are there any web sites about "AI"? 19-Oct-01 2:25 19-Oct-01 2:25  You might take a look at www.gamedev.net regards Re: Are there any web sites about "AI"? Carlos Antollini19-Oct-01 12:42 Carlos Antollini 19-Oct-01 12:42  http://cs.felk.cvut.cz/~xobitko/ga/ Enjoy it.... Nice weekend Carlos Antollini. Today is Friday.... SSShhh Bob!!! Re: Are there any web sites about "AI"? Maer72720-Oct-01 3:24 Maer727 20-Oct-01 3:24  Hi, Antollini! It is a nice site! Regards, Maer about Dll loading order Maer72718-Oct-01 21:19 Maer727 18-Oct-01 21:19  What means "dependency loops in the DLL load order"? (from MSDN "DllMain") Can you show me an example? Thanks, Maer About "CEdit" Maer72718-Oct-01 21:11 Maer727 18-Oct-01 21:11  How to precisely create a CEdit that contains 6 rows with 10 characters in a row? (the font and size of the characters are not certain, so we must get the width and height of the font, but I do not know how to do that) Can you show me an example? Thanks, Maer Re: About "CEdit" Christian Graus18-Oct-01 22:28 Christian Graus 18-Oct-01 22:28  You need to make the CEdit multiline, you need to get the size of the font, and then you need to call MoveWindow or SetWindowPos to size the CEdit accordingly. You probably have to take into account the edge of the CEdit also. Christian As I learn the innermost secrets of the around me, they reward me in many ways to keep quiet. Men with pierced ears are better prepared for marriage. They've experienced pain and bought Jewellery. Re: About "CEdit" Maer72720-Oct-01 3:12 Maer727 20-Oct-01 3:12  Thanks pal! Your answer is the one I am looking for. Have a nice day! Maer a thread local storage (TLS) index Maer72718-Oct-01 21:00 Maer727 18-Oct-01 21:00  What is the function of "a thread local storage (TLS) index"? What is the difference between it and an ordinary parameter? Can you help? Thanks, Maer Re: a thread local storage (TLS) index Steen Krogsgaard18-Oct-01 22:48 Steen Krogsgaard 18-Oct-01 22:48  The thread local storage (TLS) is a place provided by Win32 where you can put thread-specific data. Imagine you have a multi-threaded program, and you have some piece of data in each thread which is specific for that thread. Win32 gives you the TLS to store this kind of thread data. The index-part is because you can allocate many TLS "slots". To answer what's the difference between a TLS index and an ordinary parameter I'd have to know your context. Cheers Steen. "To claim that computer games influence children is rediculous. If Pacman had influenced children born in the 80'ies we would see a lot of youngsters running around in dark rooms eating pills while listening to monotonous music" Re: a thread local storage (TLS) index Maer72720-Oct-01 3:29 Maer727 20-Oct-01 3:29  Hi, Steen! Thanks for your reply! It really helps me a lot. From MSDN, I learned that the DLL have something to do with the TLS. For example, the DLL uses TlsAlloc to allocate a TLS index. But I do not know how they work? Why Dll should do that? Can you help? Regards, Maer Re: a thread local storage (TLS) index Steen Krogsgaard21-Oct-01 22:56 Steen Krogsgaard 21-Oct-01 22:56  Well, the DLL can be attached to several threads within a process, and you could imagine that each attachment would need some data that was global to the DLL but specific to each thread (e.g. the state information that MFC uses). DllMain can use TlsAlloc in response to a DLL_THREAD_ATTACH to allocate room for this data, and a TlsFree to deallocate it in response to a DLL_THREAD_DETACH. If you want to know how TlsAlloc/TlsFree works just look it up in MSDN. If you want to know more about multithreading then I warmly suggest that you read Richter's "Advanced Windows". Cheers Steen. "To claim that computer games influence children is rediculous. If Pacman had influenced children born in the 80'ies we would see a lot of youngsters running around in dark rooms eating pills while listening to monotonous music" Re: a thread local storage (TLS) index Steen Krogsgaard18-Oct-01 22:52 Steen Krogsgaard 18-Oct-01 22:52  Why does you mail bounce? Please provide a valid mail address (out of courtesy). Cheers Steen. "To claim that computer games influence children is rediculous. If Pacman had influenced children born in the 80'ies we would see a lot of youngsters running around in dark rooms eating pills while listening to monotonous music" Re: a thread local storage (TLS) index Maer72720-Oct-01 3:34 Maer727 20-Oct-01 3:34  Hi, Steen! I am sorry if I have got you into trouble. My mail address provided on www.codeproject.com(maer727@sohu.com. ) is a valid mail address. I use the mail address every day in my Lab. I hope you can help. Best regards, Maer Get Edit control text in dll PJ Arends18-Oct-01 19:31 PJ Arends 18-Oct-01 19:31  How can I, from a dll, get the text in an edit control on my main app. In the dll I have the HWND of the edit control. I tried ::GetWindowText(hWndEdit, buffer, _MAX_PATH); didn't work so I tried ::SendMessage(hWndEdit, WM_GETTEXT, _MAX_PATH, (LPARAM)buffer); still no luck There must be a way to do this, but I can't seem to find it. --- Blessed are those who can laugh at themselves, for they shall never cease to be amused Transmit simple data through DLL Mr.Freeze18-Oct-01 14:58 Mr.Freeze 18-Oct-01 14:58  Hi, I would like to transmit very simple data (like two integers) between two applications through a dll. I use a shared data segment to store the data. One application writes the data and the other reads it. The problem is the following: The application which reads the data has to do some sort of polling to check if new data has arrived and this is too slow. Isn't there a simple way to install a callback mechanism (please as simple as possible... I'm not a programming guru (and "memory mapped file" makes me afraid )) Thanks for your help Re: Transmit simple data through DLL Steen Krogsgaard18-Oct-01 22:51 Steen Krogsgaard 18-Oct-01 22:51  I would use a registered windows message to relay the sync info. Register a message in each of your applications (a GUID is a very good name to use for the message). After one app updates the shared info it broadcasts the registrered message (PostMessage with NULL HWND). In the recieving app your respond to the registered message and read the shared data. Cheers Steen. "To claim that computer games influence children is rediculous. If Pacman had influenced children born in the 80'ies we would see a lot of youngsters running around in dark rooms eating pills while listening to monotonous music" Thanks... Mr.Freeze19-Oct-01 1:04 Mr.Freeze 19-Oct-01 1:04  ...hope that is as easy at it sounds remove a message in a hook function? PJ Arends18-Oct-01 14:40 PJ Arends 18-Oct-01 14:40  This should be a simple question. I have set up a global hook using the WH_GETMESSAGE flag (no problem there). After I have processed the message in my hook function, how do I remove it from the message queue so that it not processed by the application (The message is a WM_KEYDOWN message trapping the VK_UP and VK_DOWN keys). --- Blessed are those who can laugh at themselves, for they shall never cease to be amused Re: remove a message in a hook function? Tim Deveaux19-Oct-01 10:35 Tim Deveaux 19-Oct-01 10:35  I think you might need to use WH_KEYBOARD. From "INFO: Importance of Calling DefHookProc()" in the MSDN: <snip> "Only a keyboard hook (WH_KEYBOARD) can suppress a keyboard event by not calling DefHookProc() and returning a 1. When the system gets a value of 1 from a keyboard hook callback function, it discards the message. " </snip> oops - wrong snip! - the above was for win 3.0 "For Win32, mouse and keyboard hooks can suppress messages by return value and do not have to call CallNextHookEx(), unless they want to pass the message on. Other hooks, like WH_CALLWNDPROC, don't need to call CallNextHookEx(), because it will be called by the system. However, all hooks should call CallNextHookEx() immediately if nCode<0." Someday I hope to be able to get a post right on the first attempt!

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