OpenEuphoria

Re: popSelf( ) wont fly

• Posted by Derek Parnell <dparnell at BIGPOND.NET.AU> Sep 13, 2000
• 441 views

Hi Al,
getSelf() is global. I don't know what version of win32lib you are using,
but its been global for awhile now, I believe.
----- Original Message -----
From: "Al Getz" <xaxo at AOL.COM>
To: <EUPHORIA at LISTSERV.MUOHIO.EDU>
Sent: Wednesday, September 13, 2000 5:00 PM
Subject: Re: popSelf( ) wont fly


> Hi Derek,
>
>   Matt suggested using getSelf() to return the id but since its not
>   global it cant be used by an external program.
>
>   Returning the id of the control is important for at least these reasons:
>
>   1.  User created message map to handle control functions not handled
>       by Win32Lib (what i need now).  This is what the original intent
>       of onEvent() was (somewhat).
>
>   2.  Enumerated controls: for messageing a large number of controls
>       of the same type, such as a calculator keypad. Makes the processing
>       code neat and compact if you can decode which of your controls
>       is being serviced.  This is especially true when the controls
>       are very much the same (such as an alpha keypad).
>
>   3.  A large number of C functions require the hwnd of the control
>       in order to call the function.  Here's just one example:
>
>     hTarget=c_func(xSendMessage,{hwndFrom,TVM_HITTEST,0,lphti})
>
>     This is just one of many possible function calls and even
>     the wrapped version still requires the id of the control.
>     So how else would one use "sendMessage()" without knowing the id?
>     Having the id also allows getting the hwnd if desired.
>     Using sendmessage() in either form is an important part of the
>     windows API, and thats only one example.  A lot more functions
>     require the hwnd of the control, so im surprised no one else
>     said anything yet.  Is anyone using it that much?
>
>
>   The only way around the above that i can see is to add code to winlib
>   which then makes it somewhat specialized.  It would be better to
>   allow the user to create his own message map if needed.  This allows
>   for more flexibility also.  To do this, the id has to be known.
>
>   Since getSelf() achieves all these goals, why not just make it a global?
>
>   --Al