Path: utzoo!mnetor!uunet!husc6!think!ames!pasteur!ucbvax!CORY.BERKELEY.EDU!dillon
From: dillon@CORY.BERKELEY.EDU (Matt Dillon)
Newsgroups: comp.sys.amiga
Subject: Re: help: window IDCMP flags
Message-ID: <8802212219.AA06548@cory.Berkeley.EDU>
Date: 21 Feb 88 22:19:16 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Lines: 42


:
:Howdy howdy.
:
:I have a few questions pertaining to windows, IDCMP flags and gadgets.
:All the following questions pertain to SMART_REFRESH windows.
:
:1 - I thought I once saw a way to set the flags so that you only get
:    REFRESHWINDOW events when the window is enlarged (ie not smaller)
:    but I can't figure it out so I filter them myself.
:
:2 - It looks like doing a RefreshGadgets() causes a REFRESHWINDOW event
:    (if that flag is set in the IDCMP). Is that really so??

	SMART_REFRESH windows get REFRESHWINDOW events.  Usually, I
just add NOCAREREFRESH to NewWindow.Flags.  If you do not, you *must*
handle the event.

	Use the NEWSIZE IDCMP to handle being informed when the window
is resized.

:
:3 - I have a window with several custom gadgets (scroll bars)
:    as well as the system close, drag, depth and resize gadgets.
:    My IDCMP flags are: CLOSEWINDOW | GADGETUP | GADGETDOWN
:			| NEWSIZE | ACTIVEWINDOW
:...
:    window or in the screen/backdrop window] causes my window's
:    gadgets to be refreshed by the system (which it didn't cause prior
:    to the resizing).
:    Any ideas on what is causing this nuisance??
:
:Thanks in advance,
:Jan Sven

	Because you are not handling the refresh message, and they stack
up.  It doesn't matter that you do not specify it in the IDCMP.

Solution:	Set NOCAREREFRESH in your window's flags (i.e. in the 
		NewWindow structure).

				-Matt