how to create new thread

hemlat

Hi, I need to create new thread if I click on particular button in my MFC application.I have added following code.

AfxBeginThread( CRuntimeClass* pfnThreadProc,LPVOID pParam,
int nPriority = THREAD_PRIORITY_NORMAL,UINT nStackSize = 0,
DWORD dwCreateFlags = 0,LPSECURITY_ATTRIBUTES lpSecurityAttrs = NULL);
UINT CTestcycleDlg::pfnThreadProc(LPVOID pParam )
{
}

I am getting errors one of thoes error is error C2275: 'CRuntimeClass' : illegal use of this type as an expression I have created user interface thread.Is it correct.Where I need to close thread and how to close

Divyang Mithaiwala

Haven't you tried CreateThread[^]. But be careful to terminate thread. For that you can see this[^].

Do not trust a computer... Always check what computer is doing regards, Divyang Mithaiwala Software Engineer

hemlat

I am using MFC.I think I should not use createThread.

Divyang Mithaiwala

hemlat wrote:

UINT CTestcycleDlg::pfnThreadProc(LPVOID pParam )

Your method which will work as thread & belong to class then it must be define static. But is method is not belong to any class then it is no matter to have static.

hemlat wrote:

AfxBeginThread( CRuntimeClass* pfnThreadProc,LPVOID pParam,

When you pass pointer/name of method use CTestcycleDlg::pfnThreadProc. I hope this will work for your code.

Do not trust a computer... Always check what computer is doing regards, Divyang Mithaiwala Software Engineer

Divyang Mithaiwala

You can use createThread method.There is no matter of MFC.

Do not trust a computer... Always check what computer is doing regards, Divyang Mithaiwala Software Engineer

Rajesh R Subramanian

Divyang Mithaiwala wrote:

You can use createThread method.There is no matter of MFC.

Actually, there is. Please read the docs[^]

It is a crappy thing, but it's life -^ Carlo Pallini

Rajesh R Subramanian

You are correct, you should NOT be using the CreateThread()[^] Win API version if you are using MFC (Again, look at the remarks section of CWinThread class to know why). But, if you want that kind of functionality (which you may need with UI threads), you can then create a CMyThread object and then call CMyThread::CreateThread() when you want the thread to start execution. (CMyThread is a CWinThread derivative.)

It is a crappy thing, but it's life -^ Carlo Pallini

Rajesh R Subramanian

Here is an UI thread tutorial: UI threads[^]

It is a crappy thing, but it's life -^ Carlo Pallini

David Crow

hemlat wrote:

AfxBeginThread( CRuntimeClass* pfnThreadProc,LPVOID pParam, int nPriority = THREAD_PRIORITY_NORMAL,UINT nStackSize = 0, DWORD dwCreateFlags = 0,LPSECURITY_ATTRIBUTES lpSecurityAttrs = NULL);

What is this? Are you trying to call AfxBeginThread(), or just duplicate the prototype?

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ThatsAlok

hemlat wrote:

UINT CTestcycleDlg::pfnThreadProc(LPVOID pParam )

i think you forget to make function static

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Never mind - my own stupidity is the source of every "problem" - Mixture

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ThatsAlok

Rajesh R Subramanian wrote:

Actually, there is. Please read the docs[^]

Good reference

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
Never mind - my own stupidity is the source of every "problem" - Mixture

cheers, Alok Gupta VC Forum Q&A :- I/IV Support CRY- Child Relief and You

hemlat

Actually I dont know how to create thread.I have tried with above code.I am seaching the code for thread creation.

Rajesh R Subramanian

hemlat wrote:

I am seaching the code for thread creation. Quote Selected Text

Still?! Are you kidding me? I gave you link to an excellent UI thread tutorial yesterday. Did you read it or not? Why are you "searching" for code, BTW? You're supposed to write code if you are a programmer of any kind.

It is a crappy thing, but it's life -^ Carlo Pallini

hemlat

Thanks for your reply.Just now I have started working.Morning I was busy with some other task.Just I replyed to his message he was asking me what I was doing.I started working on Link which u hv sent.

hemlat

I need to create worker thread.Because I need to put my functionality in thread function. Can you suggest any link which will show how to create worker thread

Rajesh R Subramanian

Bookmark the MVP Tips[^] page. There's plenty of good essays there. Look for "Using Worker Threads" essay for your purpose.

It is a crappy thing, but it's life -^ Carlo Pallini

David Crow

hemlat wrote:

Can you suggest any link which will show how to create worker thread

Did you even bother to read the article that Rajesh provided? If you had, you would have noticied a link to this. :rolleyes:

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

hemlat

thanks for your reply.I have created thread.I got article in Codeproject.Sorry for late reply.