Reverted task bar code to 1.0.15 version. That used a window in

its own thread for handling messages.  It seems to fix most of
the task bar bugs but there's still an hourglass cursor on NT
when using the popup menu.

lib/arch/CArchTaskBarWindows.h

@@ -18,6 +18,7 @@
 #define WIN32_LEAN_AND_MEAN
 
 #include "IArchTaskBar.h"
+#include "IArchMultithread.h"
 #include "stdmap.h"
 #include "stdvector.h"
 #include <windows.h>
@@ -77,13 +78,21 @@ private:
 	LRESULT				wndProc(HWND, UINT, WPARAM, LPARAM);
 	static LRESULT CALLBACK
 						staticWndProc(HWND, UINT, WPARAM, LPARAM);
+	void				threadMainLoop();
+	static void*		threadEntry(void*);
 
 private:
 	static CArchTaskBarWindows*	s_instance;
 	static HINSTANCE	s_appInstance;
 
+	// multithread data
+	CArchMutex			m_mutex;
+	CArchCond			m_condVar;
+	bool				m_ready;
+	int					m_result;
+	CArchThread			m_thread;
+
 	// child thread data
-	ATOM				m_windowClass;
 	HWND				m_hwnd;
 	UINT				m_taskBarRestart;