Hello Harald,

On May 23 03:28 95, Harald Kipp of 2:2448/404 wrote:

 HK> I am trying to set up a 2nd thread to do some

a thread is a function, not a class.

 HK> class ServiceThread : public IThread, public IUserHandler
 HK> {
 HK> public :
 HK> ServiceThread(IStaticText* static1);
 HK> ~ServiceThread();
 HK> void run();
 HK> IObjectWindow *myObjectWindow;

 HK> protected :
 HK> Boolean user(IEvent &evt); // see below
 HK> };

i really cant understand why this is derived from IThread. As i said, a
thread is a function, NOT a class. 

 HK> AMainWindow :: AMainWindow()
 HK> :IFrameWindow("Main Window", ID_WINDOW_1)
 HK> ,servThread(&any_param)

ok, so now ServiceThread is a MessageHandler for the main thread! (and of
course it runs in the main thread!!!). 

 HK> I start the thread with

 HK> servThread.start(new IThreadMemberFn
 HK> (servThread,ServiceThread::run), true);

you are Starting the member function RUN as a thread. but i can't see any
reference to 'run' in the following posted code from you.

 HK> servThread.myObjectWindow->handle().postEvent(WM_USER,
 HK> IEventParameter1(0), IEventParameter2(0));

the message will be catched by the UserHandler.

BTW: VERY BAD Naming conventions!!! why is youre class called IUserHandler?
IBM's classes are called I*. call your classes HKUserHandler.

 HK> class IUserHandler : public IHandler

correct definition for a message Handler.

 HK> IEvent userevt(evt);
 HK> result = user(userevt);

there is a RESULT returned in event. you should set evt.setresult(userevt.result());

 HK> Boolean ServiceThread :: user(IEvent &evt)

remember : this runs in main thread! only RUN is a thread function.

 HK> Are you still with me? The problem is, that a DosSleep
 HK> (to fake lengthy processing) inserted after either

 HK> case WM_USER:
 HK> or
 HK> case ID_ANY

 HK> will block PM. I'm using IBM C/C++ Tools Version 2.01

of course.

 HK> If anybody please give me a hint how to implement a
 HK> single servicethread processing different events via
 HK> PM messages.

you should start the thread from the mainThread and IN the run function you
should install your IUserHandler. create a ServiceThread alike object
(which is NOT derived from IThread and which does not start a run member
anymore) in the 2ns thread. THEN message processing happens in the 2nd
thread.

class MyMainClass
{
 public :
   MyMainClass() {}
   virtual ~MyMainClass() {}

   void start();
   void stop();
   void MyThreadFunc();
 private:
   IThread Thread;
};

void MyMainClass::start()
{
 Thread.start(new IThreadMemberFn (*this,
                  MyMainClass::MyThreadFunc));
}

// ...

PS: for simple inter thread communication with ICLUI see:

\IBMCPP\WKFRAMES\UILINES\*.cpp

 WARPED!, Mario

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