Starting a thread which runs a member function

[daniel]

Hello ,

I have the following code :

//...additional includes cut off
class MyThread{

public:
DWORD WINAPI ThreadProc( LPVOID lpParameter );
void run();
};

DWORD WINAPI MyThread::ThreadProc(LPVOID lpParameter){

cout<<"Thread called\n";
return 0;
}

void MyThread::run(){

CreateThread(NULL, 0, MyThread::ThreadProc, NULL, 0, NULL); //<---
LINE
}

void main(void){


MyThread p;
p.run();

}

When i compile this ( with MSVS 2005 ) i get the following compile
error:

LINE: error C3867: 'MyThread::ThreadProc': function call missing
argument list; use '&MyThread::ThreadProc' to create a pointer to
member.

Then I add &MyThread:ThreadProc instead of MyThread::ThreadProc and i
get another compile error:

LINE: error C2664: 'CreateThread' : cannot convert parameter 3 from
'DWORD (__stdcall MyThread::* )(LPVOID)' to 'LPTHREAD_START_ROUTINE'

Any logic explanation?

Thank-you ,

Daniel

 

[AnonMail2005]

Hello ,

I have the following code :

//...additional includes cut off
class MyThread{

public:
        DWORD WINAPI ThreadProc(  LPVOID lpParameter );
        void run();

};

DWORD WINAPI MyThread::ThreadProc(LPVOID lpParameter){

        cout<<"Thread called\n";
        return 0;

}

void MyThread::run(){

        CreateThread(NULL, 0, MyThread::ThreadProc, NULL, 0, NULL); //<---
LINE

}

void main(void){

        MyThread p;
        p.run();

}

When i compile this ( with MSVS 2005 ) i get the following compile
error:

LINE: error C3867: 'MyThread::ThreadProc': function call missing
argument list; use '&MyThread::ThreadProc' to create a pointer to
member.

Then I add &MyThread:ThreadProc instead of MyThread::ThreadProc and i
get another compile error:

LINE: error C2664: 'CreateThread' : cannot convert parameter 3 from
'DWORD (__stdcall MyThread::* )(LPVOID)' to 'LPTHREAD_START_ROUTINE'

Any logic explanation?

Thank-you ,

Daniel

It expects a free standing function not a member function. The bad
news is that you will have to provide that function. The good news is
that you can pass anything you want to that function so it's pretty
easy to pass an address of some object that you can use.

HTH