Thanks! Since I don't need the class anymore I don't need to use bind, but I'll keep this in mind for the future. Thanks again, Tim -----Original Message----- From: boost-bounces@lists.boost.org [mailto:boost-bounces@lists.boost.org] On Behalf Of Cory Nelson Sent: Monday, November 22, 2004 5:58 PM To: boost@lists.boost.org Subject: Re: [boost] boost.thread : Can one create a thread with an objectmember function? Yup! boost::thread(boost::bind(&classname::method, boost::ref(thisptr))); On Mon, 22 Nov 2004 10:50:17 -0500, Tim Laplaca <tlaplaca@voiceglo.com> wrote:

I am very new to boost, I apologize if this has been asked before. I searched the mailing list archive but could not find an answer to my question.

I was successful creating threads with functions that are not members of objects, but when I try to create threads with a pointer to an object member I get compilation errors (MS Visual Studio .NET).

Examples:

class objclass;

typedef void (objclass::*pmf)(); // ptr to member func

class objclass

{

public:

objclass() : thread_id (0) { p=&objclass::dowork; }

inline setthreadid(int x) {thread_id = x;}

inline setvaltwo(std::string str) {valtwo = str;}

void dowork();

pmf p; // pointer to dowork member function

int getthreadid() {return thread_id;}

std::string getvaltwo() {return valtwo;}

private:

int thread_id;

std::string valtwo;

};

void objclass::dowork()

{

}

(In the main...)

boost::thread_group thrds;

objclass * objthread;

objthread = new objclass;

thrds.create_thread( (objthread->p) );

I get the following error:

c:\Boost\include\boost-1_31\boost\function\function_template.hpp(427): error C2664: 'void

boost::function0<R>::assign_to<Functor>(FunctionPtr,boost::detail::funct

ion::function_ptr_tag)' : cannot convert parameter 2 from 'boost::detail::function::member_ptr_tag' to 'boost::detail::function::function_ptr_tag'

with

[

R=void,

Functor=pmf,

FunctionPtr=pmf

]

Is there a way around this problem, or is it simply not possible to make threads from object members with boost?

Thanks,

Tim

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