RE: [Dev-C++] Static members for callbacks

[Ioannis V. <no...@ho...>]

> -----Original Message-----
> From: Abhijit Shylanath [mailto:mu...@gm...] 
> Sent: Monday, July 29, 2002 9:50 AM
> To: Ioannis Vranos
> Cc: Dev-C++ Mailing List
> Subject: Re: [Dev-C++] Static members for callbacks
> 
> 
> > > You can't use non-static methods for windows callbacks (like in
> > > CreateThread(), SetWindowsHookEx()) which need you to suppply
> > > a call-back
> > > function.
> >
> >
> > This is too Win32 to me. What do you mean by call-back 
> function. Can you
> > provide a small concrete example?
> 
> 
> Basically, typedef function_pointer call_back;
> 
> For example, in CreateThread(), the args are:
> 
> HANDLE CreateThread(
>     LPSECURITY_ATTRIBUTES  lpThreadAttributes, // address of 
> thread security
> attributes
>     DWORD  dwStackSize, // initial thread stack size, in bytes
>     LPTHREAD_START_ROUTINE  lpStartAddress, // address of 
> thread function
>     LPVOID  lpParameter, // argument for new thread
>     DWORD  dwCreationFlags, // creation flags
>     LPDWORD  lpThreadId  // address of returned thread identifier
>    );
> 
> Here, LPTHREAD_START_ROUTINE should be a function pointer to a 32-bit
> returning (void *) accepting function, as in
> 
>     DWORD my_thread_proc(void *some_arg);
> 
> where DWORD is, on Win32, unsigned long.



Ok then you can use a regular function to call the appropriate member
function. This regular function will accept also your object as a
parameter.



Ioannis

* Ioannis Vranos
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