[Freeglut-cvs] SF.net SVN: freeglut:[1540] trunk/freeglut/freeglut/src/fg_callbacks.c

[<dc...@us...>]

Revision: 1540
          http://freeglut.svn.sourceforge.net/freeglut/?rev=1540&view=rev
Author:   dcnieho
Date:     2013-03-01 07:43:48 +0000 (Fri, 01 Mar 2013)
Log Message:
-----------
comment on implementation of window status callback

Modified Paths:
--------------
    trunk/freeglut/freeglut/src/fg_callbacks.c

Modified: trunk/freeglut/freeglut/src/fg_callbacks.c
===================================================================
--- trunk/freeglut/freeglut/src/fg_callbacks.c	2013-03-01 07:41:23 UTC (rev 1539)
+++ trunk/freeglut/freeglut/src/fg_callbacks.c	2013-03-01 07:43:48 UTC (rev 1540)
@@ -172,6 +172,11 @@
  * DEVELOPER NOTE: in the library, only invoke the window status func, this
  * gets automatically translated to the visibility func if thats what the
  * user has set.
+ * window status is kind of anemic on win32 as there are no window messages
+ * to notify us that the window is covered by other windows or not.
+ * Should one want to query this, see
+ * http://stackoverflow.com/questions/5445889/get-which-process-window-is-actually-visible-in-c-sharp
+ * for an implementation outline (but it would be polling based, not push based).
  */
 static void fghVisibility( int status )
 {

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