From 0764c52f3f9c8d6b59fd8a5d70634f1544c22a6c Mon Sep 17 00:00:00 2001
From: Don Pellegrino <don@coffee.donpellegrino.com>
Date: Mon, 17 Aug 2009 23:38:54 +0000
Subject: Modified to use CTRL modifier for zoom selections as well.

---
diff --git a/src/controller/callbacks/mouse.c b/src/controller/callbacks/mouse.c
index f594c23..f901476 100644
--- a/src/controller/callbacks/mouse.c
+++ b/src/controller/callbacks/mouse.c
@@ -26,7 +26,9 @@ mouse (int button, int state, int x, int y)
       // Deactive a panning event if one was happening.
       S.pan.active = false;
 
-      if (S.selection.active && S.selection.purpose == ZOOM)
+      if (S.selection.active && 
+	  S.selection.purpose == ZOOM &&
+	  glutGetModifiers () == GLUT_ACTIVE_CTRL)
 	{
 	  /*
 	   * NOOP if the mouse was not moved.
--
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