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CreateWaitableTimer()

Started by NewtonApple Feb 22, 2003 at 10:13 PM 1 reply 1.3k views

Original Post

Feb 22, 2003 at 10:13 PM

Hi there, I''m working on something where I need to create a waitable timer event to be used in conjunction of winsock overlapped i/o. I''m running Windows XP home edition. for some reason when i tried to set it up using CreateWaitableTimer() in VC++ 6.0 (same result in Visual Studio.Net), it complained that there''s no such function: "error C2065: ''CreateWaitableTimer'' : undeclared identifier." The code i use is as follow: Handel waitEvents = CreateWaitableTimer(NULL, TRUE, "WaitableTimer"); I even tried to compile the code from (link below) MSDN and it still won''t work... if someone knows the reason why this is so please let me know. Thanks in advance.. http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dllproc/base/using_waitable_timer_objects.asp

Martee

126

Martee

Feb 22, 2003 at 10:26 PM

Did you define _WIN32_WINNT?

From MSDN:

quote:

To compile an application that uses this function, define the _WIN32_WINNT macro as 0x0400 or later. For more information, see Using the SDK Headers.

NewtonApple

Author

NewtonApple

Feb 23, 2003 at 1:50 AM

Hm.. when i "#define _WIN32_WINNT 0x0501" it seems to block off winsock2.h. this happens when i define it before winsock2.h; it doesn't seem to work if i define it after that... -__- i'm not very familiar with the whole win32 linking mechanism.. all i want is to use a WaitableTimer in my simple console program.. so if anyone care to explain a little.. my ears are all urs.. oh.. im and linking ws2_32.lib..

[edited by - NewtonApple on February 23, 2003 2:57:43 AM]

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