CODEWITHSUNDEEP
c++multithreadingmfc
user5255862
user5255862

Reputation:

PostThreadMessage C++ (CWinThread)


i'm using MFC C++ and I'm trying to send message to CWinThread using PostThreadMessage from Dlg Class and the message isn't handled on the thread class

.H file of the thread:

   #define Message_Test_Id WM_USER + 1

   class CTestMsg : public CWinThread
   {
       DECLARE_DYNCREATE(CTestMsg)

       protected:
       CTestMsg();           // protected constructor used by dynamic        creation
       virtual ~CTestMsg();

   public:
       virtual BOOL InitInstance();
       virtual int ExitInstance();

   protected:
       afx_msg void OnTestMsg(WPARAM wParam, LPARAM lParam);//The Message
       DECLARE_MESSAGE_MAP()

};

.cpp of the thread:

   BEGIN_MESSAGE_MAP(CTestMsg, CWinThread)
       ON_THREAD_MESSAGE(Message_Test_Id,OnTestMsg)
   END_MESSAGE_MAP()

   ....
   void CTestMsg::OnTestMsg(WPARAM wParam, LPARAM lParam)
   {
     ...
   }

And I'm trying to send the message in the Dlg class:

   CTestMsg *m_testMsg = (CTestMsg*)AfxBeginThread(RUNTIME_CLASS(CTestMsg),THREAD_PRIORITY_NORMAL, 10000, CREATE_SUSPENDED, NULL);

       m_testMsg->PostThreadMessageW(Message_Test_Id, 0, 0);

why the message isn't handled? thanks! (sorry on my bad Engllish)

Upvotes: 3

Views: 1156

Answers (1)

marcinj
marcinj

Reputation: 49976

You are creating your thread with CREATE_SUSPENDED flag, to make it actually run you must resume it with:

m_testMsg->ResumeThread();

Upvotes: 2

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