OpenEuphoria

Re: What does WinMain do?

• Posted by Patrick Barnes <mrtrick at gmail.com> Nov 16, 2004
• 471 views

On Fri, 12 Nov 2004 23:56:24 -0800, Derek Parnell
<guest at rapideuphoria.com> wrote:

Hi Derek,

In your code below, it listens for a WM_QUIT message... how could a
program send that? And how would it send it to itself?


 
> }}}
<eucode>
> include dll.e
> include machine.e
> 
> constant SIZEOF_MSG = 28
> constant user32 = open_dll("user32.dll")
> constant GetMessage         = define_c_func(user32, "GetMessageA",
> {C_POINTER,C_POINTER,C_UINT,C_UINT}, C_INT)
> constant TranslateMessage   = define_c_proc(user32, "TranslateMessage",
> {C_INT})
> constant DispatchMessage    = define_c_proc(user32, "DispatchMessageA",
> {C_POINTER})
> 
> procedure eventLoop()
>     atom msg
>     atom getRC
> 
>     -- Allocate a message buffer
>     msg = allocate(SIZEOF_MSG)
>     while 1 do
>     -- message loop
>         getRC = c_func( GetMessage, { msg, 0, 0, 0 } )
>         if  getRC = 0
>          or getRC = -1 then
>             exit -- User has sent a WM_QUIT message
>         end if
> 
>         c_proc( TranslateMessage, { msg } )
>         c_proc( DispatchMessage, { msg } )
>     end while
> 
>     free(msg)
> 
> end procedure
> </eucode>
{{{

> 
> 
> --
> Derek Parnell
> Melbourne, Australia
> 
> 
> 
> 


-- 
MrTrick