history.txt

Web VNC samples delphi

									CORBAConnect, InputsEnabled, LockSetting, PollUnderCursor,
									PollForeground, PollFullScreen, OnlyPollConsole,
									OnlyPollOnEvent

	UPDATE ROUTINES FIXED!
	If a client chose to send multiple update requests to the server without waiting for
	the update data, then the server would only consider the last request.  This behaviour
	was incorrect and has now been fixed.  As a result, WinVNC will now work properly with
	the PalmVNC viewer.

	HTTP SERVER FIXED!
	The HTTP server section of WinVNC could end up listening on the wrong port number when
	automatic display number selection was in use.  This is now fixed.

	MEMORY LEAK FIXED!
	A small memory leak in the WinNT side of the vncService::CurrentUser function has been fixed.
	Although the amount lost on each execution was small, the function is called often enough
	for this to cause problems over long periods of use.

	Established that the Ctrl-Alt-Del problem under NT 3.51 is because GetAsyncKeyState for
	ctrl and alt ALWAYS returns zero.  Don't know why...

	Fixed a potential lockup when the Properties dialog is closed by the OS rather than by
	the Ok or Cancel buttons.

Version 3.3.2 (VNC Version 3.3.2, revision 2)
Changes from revision 1:

	CTRL-ALT-DEL IMPROVED!
	Ctrl-Alt-Del will now work both with the Delete key and with the keypad Del key, from
	Unix clients.  Unix clients treat these two keys differently but Windows doesn't, so
	WinVNC now maps both on to VK_DELETE internally.

	MENU UPDATES IMPROVED!
	Extra hook code has been added to the VNCHooks library to catch the messages used to
	update the contents of pop-up menus, etc.  As a result, menus tend to suffer much less
	from the characteristic colour-smear effect.

	Code is now in place to perform automatic locking or logoff of the workstation
	when all remote clients have closed, for security reasons.  Unfortunately, the
	LockWorkstation function doesn't work on pre-NT5 machines, so only the logoff
	functionality is implemented.

	The new ConnectPriority option is available, on a per-machine basis.  The
	HKEY_LOCAL_MACHINE/Software/ORL/WinVNC3/ConnectPriority
	setting can take one of three values:
		0 - new, non-shared incoming connections kick off existing ones.
		1 - all incoming connections are treated as shared, regardless of the -shared viewer option.
		2 - new, non-shared incoming connections will be refused if a current connection exists.

	Automatic display number selection is now available.  This option is set through the WinVNC
	properties dialog.  When this option is used, the display number parameter in the dialog
	is ignored and the display number to use is instead allocated on the fly by WinVNC.

Version 3.3.2 (VNC Version 3.3.2, revision 1)
Changes from base 3.3.2 release:

	PALETTE-BASED CLIENTS SUPPORTED!
	Clients which request 8-bit palette-based data are now supported by WinVNC.
	Palette-based clients will get the best results from 8-bit palette mode
	servers, due to the way in which truecolour is culled into 8-bit palettes.
	svncviewer will now work with 8-bit WinVNC desktops as well as Xvnc ones.

	LOGGING SUPPORTED!
	Run-time logging of all internal debug messages is now supported.  Log data
	may be output to a file or a console window (or the MSVC debugger if the
	program was compiled with debugging active.)
	Two registry keys under HKEY_LOCAL_MACHINE/Software/ORL/WinVNC3 are used:
	DebugMode indicates which logging methods to use.
		[1 = MSVC debugger]
		2 = Output to log file Winvnc.log in the WinVNC directory
		4 = Output to a console window, displayed on-screen
	Any combination of the above values may be used.
	DebugLevel indicates how much debug information to present.  Any positive
	integer is valid.  Zero indicates that no debugging information should be
	produced and is the default.

	Loopback (local-machine) connections to WinVNC will now be allowed if the
	HKEY_LOCAL_MACHINE/Software/ORL/WinVNC3/AllowLoopback registry entry is set
	to 1.  The default is 0.

	Connections may now be made to WinVNC servers without requiring authentication
	if the HKEY_LOCAL_MACHINE/Software/ORL/WinVNC3/AuthRequired registry entry is
	set to 0.  The default is 1.

	Microsoft Developer Studio configurations are included (but not tested) for 
	Alpha NT, to make compilations for this platform more straightforward.

	CopyRect is now handled differently and tends to give better results when
	windows are dragged around the screen.

	All notifications of potential updates to the screen are cached into a vncRegion
	object in the vncDesktop thread and are only flushed to clients immediately
	before TriggerUpdate is called, to improve performance.

	Added a delay when the -kill option is used, to give the running copy time to quit.

	Fixed a CopyRect-related bug which caused windows to scroll oddly when dragged
	partially off the left or top of the screen.

Version 3.3.2 (VNC Version 3.3.2)
Release version.

Version 3.3.1 (VNC Version 3.3, revision 20a)
Changes from revision 19:

	WinVNC now returns explanatory message text to the viewer when an incoming
	connection is refused because of an empty Password field or a local-loopback
	connection.

	Mouse movements are now pre-processed by the Desktop handler and only passed to
	the Client handlers immediately before an update is triggered, resulting in less
	overhead and therefore lower latency.

	If a client requests the CopyRect encoding in the list of encodings it supports
	then WinVNC will now use the CopyRect primitive when doing simple tasks like
	dragging windows.  This still has some flaws in it but generally improves performance.

	Updated the Java classes exported by WinVNC to include the Send-Ctrl-Alt-Del button.

	Added a "-about" option, which will cause an _already running_ copy of WinVNC to
	display its About box, making it easier to check that you have the latest version!

	Added version information to the VNCHooks Dynamic Link Library.  This can be viewed
	selecting the properties dialog for the vnchooks.dll file.

Version 3.3.1 (VNC Version 3.3, revision 19)
Changes from revision 17:

	A bug in the new region culling routine was fixed.

Version 3.3.1 (VNC Version 3.3, revision 17)
Changes from revision 16:

	WIN-NT & WIN-95:

	MS-DOS applications can now by typed into!  Thanks to Gur Stavi for pointing
	out that WinVNC didn't previously generate keyboard scancodes for key events.
	This means that the COMMAND.COM and EDIT programs, for example, may now be
	used through VNC.

	Lookup-table based colour translations are now incorporated into WinVNC.
	This means an increase in memory usage but delivers a noticable performance
	boost on most screen formats.

	1, 4 and 8 bit palette-based local displays are now handled directly by
	WinVNC, resulting in a significant performance boost, although there are
	currently problems with the palette layout being confused in places.

	More intelligent culling of unchanged regions of the screen from the list of
	rectangles to be sent has been implemented.  Generally, this isn't noticable
	but over low-bandwidth links, it should have a significant effect.

	WM_ENDSESSION is handled properly for full system shutdown.

	WM_DISPLAYCHANGE is now handled, so that when the display resolution changes,
	all remote VNC users are disconnected, to prevent corrupt display updates.

	The mouse cursor rendered to VNC clients is now correct most of the time.

	When installing WinVNC as a service, quotes are now placed around the
	executable's name, to avoid problems if there are whitespace characters
	in the path.  (Common because of installing to "program files\orl\vnc")

	The command-line options available have changed slightly:
	-run			Causes WinVNC to run normally & ignore rest of command-line.
	-install		Installs the WinVNC service and continues reading the command-line.
	-remove			Removes the WinVNC service and continues reading the command-line.
	-settings		Tells a running copy of WinVNC to show its Properties box.
	-kill			Kills a running copy of WinVNC.
	If no options are given then WinVNC runs normally.
	Multiple option may be given, so, for example, to upgrade from a running copy
	if WinVNC to a new one, you could use:
		WinVNC_new -remove -install
	which will stop & remove the old copy & install the new one, or
		WinVNC_new -kill -run
	which will stop the running copy & run the new version normally.

	The Java viewer class files have been updated.  The new classes are slightly more
	compatible with borderline Java VMs.

	Deferred update messages are no longer removed from the application's message queue
	behind it's back, hopefully resulting in more reliable behaviour & fewer lock-ups.

	The screen-saver is now not disabled when WinVNC is running in service mode and a
	connection is made, to avoid a potential race condition.  This will be handled better
	in a future revision.

	WIN-NT ONLY:

	When running as a system service, WinVNC no longer disconnects all remote
	VNC connections whenever the current desktop changes.

	Corrected some problems with shift-key release code confusing Windows NT.

	WIN-95 ONLY:

	WM_USERCHANGED is handled, so that when no user is logged in, the
	machine-local password is used, otherwise the user's own VNC password and
	settings are used.
	(This assumes that Windows 95 is set to Multiple User Profile mode)

	Under Windows 95, WinVNC running in service mode no longer crashes when
	told to stop by the -kill or -remove options.

	The main text area of the Windows 95 console will now be polled by WinVNC
	properly when the Poll Console Windows Only option is set.

Version 3.3.1 (VNC Version 3.3, revision 16)
Changes from revision 15:

	The Revision 15 build was broken due to file timestamp corruption.
	Revision 16 is a complete re-build.

Version 3.3.1 (VNC Version 3.3, revision 15)
Changes from revision 13:

	WIN-NT & WIN-95:

	WinVNC will now run as a service on both Windows NT and Windows 95.
	Running WinVNC with the -install command-line option will install it into the system
	service control manager and set it to auto-run on bootup.  The -remove option will stop
	the service if necessary and will then remove it.
	WIN-95 : winvnc -install will cause the service to run immediately.
	WIN-NT : winvnc -install will install the service into the manager but not start it.

	To allow the per-machine settings for WinVNC to be changed even when WinVNC is running as
	a service, the "-settings" option will cause the service to pop-up the properties dialog.

	A bug which often caused the entire screen to be transmitted twice to a connecting
	client is now fixed.

	The general Shift, Alt and Control-related bugs, affecting non-UK/US keyboard layouts in
	particular, are now corrected, with one important exception, mentioned in the NOTES
	section below.

	WIN-NT ONLY:

	Ctrl-Alt-Del can be simulated by WinVNC if a client sends it, allowing users to log on
	and off and to lock the workstation remotely.

	WIN-95 ONLY:

	Shift, Alt and Control were broken in Revision 13, since Windows 95 cannot distinguish
	left and right shift keys at all.  This is now fixed.

	NOTES:

	When typing into an application set to use keyboard layout A, using WinVNC run with
	keyboard layout B, problems may be experienced because of WinVNC setting the wrong Shift
	key states to generate particular characters.  As long as only one keyboard layout is used
	consistently across all applications, this shouldn't be a problem.

Version 3.3.1 (VNC Version 3.3, revision 13)
Changes from revision 12:

	The Caps-Lock, Num-Lock and Scroll-Lock keys are now correctly disabled whenever a new
	client connects, if that client has keyboard input enabled.

	Left and right versions of the Shift, Alt and Control keys can now be distinguished.

	The right and middle mouse buttons can now be set to trigger updates, although by default
	these options are not used.

Version 3.3.1 (VNC Version 3.3, revision 12)
Changes from revision 10:

	It is now no longer possible to accept unauthenticated incoming connections.

	If WinVNC fails to access the local root window then any remote connection will be refused.

Version 3.3.1 (VNC Version 3.3, revision 10)
Changes from revision 9:

	Black-background initial update bug is now fixed.

	Border redrawing bug is now fixed.

Version 3.3.1 (VNC Version 3.3, revision 9)
Changes from revision 8:

	Local connections to WinVNC servers are now filtered out.

	The OMNIthread package is now included as part of the WinVNC source distribution.

	The VTypes header file is now included in the WinVNC source distribution.

	WM_NCPAINT messages are hooked, resulting in better updates of window borders.

Version 3.3.1 (VNC Version 3.3, revision 8)
Changes from revision 5:

	The resource leak while rendering the mouse pointer has been fixed.

	The WinVNC tray icon changes colour when there is a remote connection.

	An Apply button has been added to the Properties dialog so that it can be used as the main
	WinVNC window on Windows NT 3.51 (or any other system without a system tray.)

	The Non-CORBA installer now generates an uninstall option properly.

	WinVNC may now be run in a view-only mode, in which remote users have no control.

Version 3.3.1 (VNC Version 3.3, revision 5)
Changes from revision 4:

	The machine name is now converted to lowercase to get the desktop name.

	The CORBA control object is properly removed from the Naming Service on exit.

Version 3.3.1 (VNC Version 3.3, revision 4)
Changes from revision 1:

	WinVNC now warns if no password has been set for the current user.

Version 3.3.1 (VNC Version 3.3, revision 1)
Changes from version 3.05:

	WinVNC now listens on a socket for incoming HTTP connections and produces HTML accordingly.
	This allows the server to be connected to from any web browser that supports Java, without
	any plug-ins or other software having to be installed on the client system.

	The server now copes gracefully with the absence of a valid CORBA setup and warns the user.

	Any previous, running instance of WinVNC is detected, to prevent further instances from
	running.

	The new, DES-based authentication scheme is used. This results in incompatibility with VNC
	clients using version 3.2 or lower of the protocol. To avoid this problem, connect via the
	HTTP interface, which provides the correct version of the Java viewer. Version 3.3+ based
	clients will handle the new scheme correctly.

	Shared VNC client connections are now fully supported.

James "Wez" Weatherall
7 November 1997