* Implemented BDragger::{Show|Hide}AllDraggers() and its backend in the app_server.

This fixes bug #242. The value is currently stored in a separate file.
* Removed some unused codes from ServerProtocol.h.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20188 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/interface/DraggerPrivate.h

@@ -0,0 +1,23 @@
+/*
+ * Copyright 2007, Haiku, Inc. All Rights Reserved.
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef _DRAGGER_PRIVATE_H
+#define _DRAGGER_PRIVATE_H
+
+
+#include <Dragger.h>
+
+
+class BDragger::Private {
+	public:
+		Private(BDragger* dragger) : fDragger(dragger) {}
+
+		static void UpdateShowAllDraggers(bool visible)
+			{ BDragger::_UpdateShowAllDraggers(visible); }
+
+	private:
+		BDragger*	fDragger;
+};
+
+#endif	// _DRAGGER_PRIVATE_H