From: Diederick Niehorster <dcnieho@gmail.com>
Date: Fri, 1 Mar 2013 07:43:48 +0000 (+0000)
Subject: comment on implementation of window status callback
X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=commitdiff_plain;h=0b246b477db787417d63339648d13e3b7afc35af;p=freeglut

comment on implementation of window status callback


git-svn-id: svn+ssh://svn.code.sf.net/p/freeglut/code/trunk/freeglut/freeglut@1540 7f0cb862-5218-0410-a997-914c9d46530a
---

diff --git a/src/fg_callbacks.c b/src/fg_callbacks.c
index e60ea66..1d89505 100644
--- a/src/fg_callbacks.c
+++ b/src/fg_callbacks.c
@@ -172,6 +172,11 @@ void FGAPIENTRY glutDisplayFunc( FGCBDisplay callback )
  * 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 )
 {