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  4. how to create new thread

how to create new thread

Scheduled Pinned Locked Moved C / C++ / MFC
c++designhelptutorial
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  • H 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

    D Offline
    D Offline
    Divyang Mithaiwala
    wrote on last edited by
    #2

    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

    H 1 Reply Last reply
    0
    • D 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

      H Offline
      H Offline
      hemlat
      wrote on last edited by
      #3

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

      D R 2 Replies Last reply
      0
      • H 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

        D Offline
        D Offline
        Divyang Mithaiwala
        wrote on last edited by
        #4

        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

        1 Reply Last reply
        0
        • H hemlat

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

          D Offline
          D Offline
          Divyang Mithaiwala
          wrote on last edited by
          #5

          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

          R 1 Reply Last reply
          0
          • D 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

            R Offline
            R Offline
            Rajesh R Subramanian
            wrote on last edited by
            #6

            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

            T 1 Reply Last reply
            0
            • H hemlat

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

              R Offline
              R Offline
              Rajesh R Subramanian
              wrote on last edited by
              #7

              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

              1 Reply Last reply
              0
              • H 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

                R Offline
                R Offline
                Rajesh R Subramanian
                wrote on last edited by
                #8

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

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

                1 Reply Last reply
                0
                • H 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

                  D Offline
                  D Offline
                  David Crow
                  wrote on last edited by
                  #9

                  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?

                  "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

                  H 1 Reply Last reply
                  0
                  • H 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

                    T Offline
                    T Offline
                    ThatsAlok
                    wrote on last edited by
                    #10

                    hemlat wrote:

                    UINT CTestcycleDlg::pfnThreadProc(LPVOID pParam )

                    i think you forget to make function static

                    "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

                    1 Reply Last reply
                    0
                    • R 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

                      T Offline
                      T Offline
                      ThatsAlok
                      wrote on last edited by
                      #11

                      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

                      1 Reply Last reply
                      0
                      • D 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?

                        "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

                        H Offline
                        H Offline
                        hemlat
                        wrote on last edited by
                        #12

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

                        R 1 Reply Last reply
                        0
                        • H hemlat

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

                          R Offline
                          R Offline
                          Rajesh R Subramanian
                          wrote on last edited by
                          #13

                          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

                          H 1 Reply Last reply
                          0
                          • R 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

                            H Offline
                            H Offline
                            hemlat
                            wrote on last edited by
                            #14

                            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.

                            H 1 Reply Last reply
                            0
                            • H 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.

                              H Offline
                              H Offline
                              hemlat
                              wrote on last edited by
                              #15

                              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

                              R D 2 Replies Last reply
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                              • H 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

                                R Offline
                                R Offline
                                Rajesh R Subramanian
                                wrote on last edited by
                                #16

                                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

                                H 1 Reply Last reply
                                0
                                • H 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

                                  D Offline
                                  D Offline
                                  David Crow
                                  wrote on last edited by
                                  #17

                                  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

                                  1 Reply Last reply
                                  0
                                  • R 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

                                    H Offline
                                    H Offline
                                    hemlat
                                    wrote on last edited by
                                    #18

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

                                    1 Reply Last reply
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