How to Terminate a CWinThread

a_du

but for CWinThread, the thread process funtion is a static fucntion. the parameters are passed into thread fucntion by the "LPVOID param" argument. How can i pass a class member attribute into the thread function? Thanx.

a_du

Can you give me a sample of this mechanism. by calling PostThreadMessage( ) how can i implement the CWinThread so that it can catch the message? i have ever tried this way: threadRoute() { GetMessage(.....) } but is not what i want, because i need a loop inside the thread fucntion. it is keep looping until i want to terminate. Thanx!

Cedric Moonen

I suppose you create your thread within a class function ? If yes then pass the this pointer to the function and inside that function, call a public member function of your class. That's it.

Bob Stanneveld

Hello, I think that you have a worker thread problem. Read here[^] about threads. As stated in the article, you can kill your thread by calling ::TerminateThead((HANDLE)_YourWinThreadObject_);, but this is not safe, since your resources will not be cleaned up nicely... Behind every great black man... ... is the police. - Conspiracy brother Blog[^]

ThatsAlok

could you show me your coding of OnInitDialog Function?

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers, Alok Gupta

a_du

en. Thanx. i try it now.

Nilesh K

Simpler way out could be checking a flag in your thread's loop and this flag be changed by your application before exiting.

- Nilesh "Reading made Don Quixote a gentleman. Believing what he read made him mad" -George Bernard Shaw

a_du

Using Pointer really can change access the data have been passed into the thread. thanx a lot. One more question is that is there any potential problem if uing this method. i mean , if the thread loop is reading the status while outside fuction change the status at same time.

Cedric Moonen

Yes, there can be problems so it is better to use a CCriticalSection for both reading and writing to the variable. Take a look at the MSDN doc, it is not really complicated to use. If you have any further questions, don't hesitate to ask.

pierrekande

There is several way to terminate your thread. Let me suppose that you understand about synchronisation. And also to make thing more easier, define a static member variable of type: static BOOL m_endLoop for your dialog class CYourDLG; and also define a static member of type: static CEvent m_EventExit for your dialog class CYourDLG. in the CYourDLG::OnInit() function initialize m_endLoop=0; and call m_EventExit.SetEvent(). And in your function OnCancel and OnOk at before to exit, call WaitForSingleObject(EventExit,INFINITE); and in the first line in those 2 functions set m_endLoop =TRUE; and now in your loop function that terminate the thread, inside the loop insert this code: if(CYourDLG::m_endLoop==TRUE) { // first to some cleaning and close all opened file or whatelse ........... //and call CYourDLG::m_EventExit.SetEvent(); return 0; } ================== BUT when your start the thread insert this line at the begin of the thread function CYourDLG::m_EventExit.ResetEvent(); That is. You will have no access violation. This solution must help. Let me know if you have more questions Perre Kande

David Crow

See here for termination methods.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

David Crow

a_du wrote: Actually i am not sur How can you not know? You call AfxBeginThread() in one of two ways. One way creates a worker (has no message pump) thread. The other creates a UI (has a message pump) thread.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

a_du

:-DThank you very much. I have fixed my problem. I have a question about the GetExitCodeThread function. if AfxEndThread fucntion is called inside my thread, what value i can get use GetExitCodeThread function. dose AfxEndThread function really can deallocate all stack of hold by the thread. Thank you.