From eb3fcca0e708986e988a03c240409ace2b5eeb56 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Peter=20K=C3=BCmmel?= <syntheticpp@gmx.net>
Date: Tue, 22 Dec 2009 10:42:34 +0000
Subject: [PATCH] also build with older Qt versions

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@32612 a592a061-630c-0410-9148-cb99ea01b6c8
---
 src/frontends/qt4/GuiView.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/frontends/qt4/GuiView.cpp b/src/frontends/qt4/GuiView.cpp
index 9e51f708ae..862870c7f9 100644
--- a/src/frontends/qt4/GuiView.cpp
+++ b/src/frontends/qt4/GuiView.cpp
@@ -107,6 +107,7 @@
 
 #define EXPORT_in_THREAD 1
 
+
 // QtConcurrent was introduced in Qt 4.4
 #if (QT_VERSION >= 0x040400)
 #include <QFuture>
@@ -270,6 +271,7 @@ struct GuiView::GuiViewPrivate
 		return tabWorkArea(0);
 	}
 
+#if (QT_VERSION >= 0x040400)
 	void setPreviewFuture(QFuture<docstring> const & f)
 	{
 		if (preview_watcher_.isRunning())
@@ -278,6 +280,7 @@ struct GuiView::GuiViewPrivate
 		connect(&preview_watcher_, SIGNAL(finished()), gv_,
 			SLOT(threadFinished()));
 	}
+#endif
 
 public:
 	GuiView * gv_;
@@ -320,6 +323,9 @@ public:
 	///
 	QFutureWatcher<docstring> autosave_watcher_;
 	QFutureWatcher<docstring> preview_watcher_;
+#else
+	struct DummyWatcher { bool isRunning(){return false;} }; 
+	DummyWatcher preview_watcher_;
 #endif
 };
 
-- 
2.39.2