For 32-bit code, use this: http://www.dlugosz.com/Repertoire/refman/Classics/closure.html#toptop It will create an actual C-like function pointer that can be called by code expecting such. This specifically includes the WinProc and any of the Enum... API functions in Windows. --John From: boost-users-bounces@lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Lloyd Sent: Friday, October 29, 2010 1:42 AM To: boost-users@lists.boost.org Subject: [Boost-users] Windows API callback, using boost::bind hi, We have a class and it has a member function. When this function is called, it calls a Windows API. One of the argument of the windows API is a callback function. Naturally this callback function has to be a *non member* function. Is there any way by which I can pass a *member* function in the place of callback function. I heard about boost::bind, with bind is it possible? Thanks, Lloyd ______________________________________ Scanned and protected by Email scanner TradeStation Group, Inc. is a publicly-traded holding company (NASDAQ GS: TRAD) of three operating subsidiaries, TradeStation Securities, Inc. (Member NYSE, FINRA, SIPC and NFA), TradeStation Technologies, Inc., a trading software and subscription company, and TradeStation Europe Limited, a United Kingdom, FSA-authorized introducing brokerage firm. None of these companies provides trading or investment advice, recommendations or endorsements of any kind. The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from any computer.