From 24c7bdc3d7578fad808f2211ad334b163e57983f Mon Sep 17 00:00:00 2001
From: Andrey Kamaev <no@email>
Date: Mon, 16 Apr 2012 18:17:38 +0000
Subject: [PATCH] #1809 include unistd.h required for usleep

---
 modules/highgui/src/window_QT.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/modules/highgui/src/window_QT.cpp b/modules/highgui/src/window_QT.cpp
index d0eb08dd19..30bf97351f 100755
--- a/modules/highgui/src/window_QT.cpp
+++ b/modules/highgui/src/window_QT.cpp
@@ -49,6 +49,8 @@
 
 #ifdef _WIN32
 #include <windows.h>
+#else
+#include <unistd.h>
 #endif
 
 #ifdef HAVE_QT_OPENGL