CWinThread消息映射

Question

所以我正在鑽研MFC的世界，特別是定製使用CWinThread來實現工作線程。我已經以其他方式成功實現了工作線程，因此使用CWinThread作爲工作線程的主要動機是使用消息映射。

將來使用我的CWinThread派生成什麼將最終成爲某種形式的超類的。請參見下面的聲明..

class WinThreadBase : public CWinThread 
{ 
    DECLARE_DYNCREATE(WinThreadBase) 

protected: 
    WinThreadBase();   // protected constructor used by dynamic creation 
    DECLARE_MESSAGE_MAP() 

public: 

    BOOL isdone_; 
}; 

這是由以下

聲明擴展和實施

class WinThreadImplementation :public WinThreadBase { 
    DECLARE_DYNCREATE(WinThreadImplementation) 

protected: 
    WinThreadImplementation(); //Declare protected because of dynamic creation 

public: 

//The following CWinThread methods have to be overriden to complete specfic work. 

    virtual BOOL InitInstance(); 
    virtual int Run(); 

private: 

    CDialog* owner_; 
    BOOL isinit_; 

public: 
    virtual ~WinThreadImplementation(); 
    void SetOwner(CDialog* pOwner) { owner_ = pOwner; } 
    BOOL Isinit() const { return isinit_; } 
    DECLARE_MESSAGE_MAP() 

//Message handler declaration 
    void OnMyThreadMessage(WPARAM wParam, LPARAM lParam); 
    void OnQuit(WPARAM wParam, LPARAM lParam); 

}; 

的implemetation

IMPLEMENT_DYNCREATE(WinThreadImplementation, WinThreadBase) 

WinThreadImplementation::WinThreadImplementation() { 
    owner_ = FALSE; 
    isinit_ = FALSE; 
} 


WinThreadImplementation::~WinThreadImplementation() { 
    //........Do some stuff here... // 
} 

BOOL WinThreadImplementation::InitInstance() { 
    //Do some initialisation here.. 
    return TRUE; //returning true allows thread start successfully 
} 

int WinThreadImplementation::Run() { 
    isinit_ = TRUE; 
    while(!isdone_) { 
     //Do some work... 
     //TRACE("Hello from pat's derived CWinThread"); 
     Sleep(1000); //Give other threads a chance to run.. 
    } 

    owner_->PostMessage(WM_QUIT, 0, 0); // Tell our parent thread that this thread has finished work                     
    return 0; 
} 

BEGIN_MESSAGE_MAP(WinThreadImplementation,CWinThread) 
    //Map messages to handler method here... 
    //CWinThread messages must be handles like this.... 
    ON_THREAD_MESSAGE(WM_MYTHREADMESSAGE,OnMyThreadMessage) 
END_MESSAGE_MAP() 

//Put message handlers here...` 
void WinThreadImplementation::OnMyThreadMessage(WPARAM wParam, LPARAM lParam)  { 
    TRACE("Hello from my message handler\n\r"); 
} 

現在對於實際發佈消息

mywinthreadimpl_ = (WinThreadImplementation*) 
     AfxBeginThread(RUNTIME_CLASS(WinThreadImplementation),  THREAD_PRIORITY_NORMAL, 
     0, CREATE_SUSPENDED); 
    mywinthreadimpl_->SetOwner(this); 
    mywinthreadimpl_->ResumeThread(); 

    while(!mywinthreadimpl_->Isinit()); //Make sure that the thread has initialised before attempting to post a message 

    if(PostThreadMessage(mywinthreadimpl_->m_nThreadID, WM_MYTHREADMESSAGE, NULL, NULL)) { 
     TRACE("message was sent correctly\n"); 
    } 

所以這樣做的結果是，它編譯，我的CWinThread派生工作，並進入運行覆寫功能。但是我無法接受PostThreadMessage發佈的消息。

我已閱讀下列

http://support.microsoft.com/kb/142415?wa=wsignin1.0

，並得出結論，因爲我使用VS 2010

任何人都可以提出什麼，我可能已經錯過了，這將是這並不適用於我阻止我的CWinThread實現接收消息？

感謝

Answer 1

不使用AfxPumpMessage或調用基類實現的CWinThread的（__super ::運行），你將永遠不會收到一條消息！

請勿使用isdone_。而是使用PostQuitMessage來終止當前的工作線程。只需使用Run的基本實現來運行該線程並抽取消息即可。

您還可以使用的OnIdle的CWinThread或其他功能，做了一些工作......

只需調用sleep阻止您的線程，而是由一個窗口消息中斷