From 9108ab693f53bc300edbad19912088c683ff17ff Mon Sep 17 00:00:00 2001
From: rkrolib <rkrolib@7f0cb862-5218-0410-a997-914c9d46530a>
Date: Fri, 7 Nov 2003 15:30:59 +0000
Subject: [PATCH] Adopted Eero Pajarre's suggestion of using a do { ... } while
 rather than { ... } for the INVOKE_WCB() macro.  This lets it be used "more
 like a function", in that:

if( ... )
    INVOKE_WCB( ... );
else
    ...

...is now legal.


git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@321 7f0cb862-5218-0410-a997-914c9d46530a
---
 freeglut/freeglut/src/freeglut_internal.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/freeglut/freeglut/src/freeglut_internal.h b/freeglut/freeglut/src/freeglut_internal.h
index f74b71c..ea311b6 100644
--- a/freeglut/freeglut/src/freeglut_internal.h
+++ b/freeglut/freeglut/src/freeglut_internal.h
@@ -389,13 +389,14 @@ struct tagSFG_WindowState
  *
  */
 #define INVOKE_WCB(window,cbname,arg_list)    \
+do                                            \
 {                                             \
     if( FETCH_WCB( window, cbname ) )         \
     {                                         \
         fgSetWindow( &window );               \
         FETCH_WCB( window, cbname ) arg_list; \
     }                                         \
-}
+} while( 0 )
 
 /*
  * The window callbacks the user can supply us with. Should be kept portable.