281 lines
9.8 KiB
Plaintext
281 lines
9.8 KiB
Plaintext
CServer
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* must have connection thread in screen info map
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allows disconnect if screen map changes and screen is removed
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* put mutex locks wherever necessary (like accessing m_active)
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server client
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------ ------
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[accept] <-- connect
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challenge --> [encrypt]
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[verify] <-- response (encrypted challenge, client name)
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hangup if invalid
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query info -->
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<-- info (size)
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---
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need config file and parser
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remove hard coded debugging stuff (in server.cpp)
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---
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win32:
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need to support window stations
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login screen on NT is a separate window station
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handle display changes
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provide taskbar icon
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win32 dll:
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should make this as small as possible
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don't use standard libraries
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use custom _DllMainCRTStartup(); just call DllMain() from it.
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use /MERGE linker switch to merge sections
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should use mutex on all public functions
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---
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not handling international characters
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---
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don't allow leaving screen when any key is down
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that includes shift keys and mouse buttons
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caps lock, etc must not be down but can be on
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not distinguishing between caps lock and shift lock
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In Caps Lock mode, the alphabetic keys send their uppercase (shifted) char-
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acter when pressed alone. For Caps Lock mode, pressing and releasing the
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lock key turns on the mode and pressing and releasing the lock key again
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turns off the mode. In Shift Lock mode, all keys on the main keypad send
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their shifted character when pressed alone. For Shift Lock mode, pressing
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and releasing the Lock key turns on the mode, and pressing and releasing
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either the Lock or the Shift key turns off the mode.
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---
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problems with CLIPBOARD and KDE and NEdit
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KDE mail reader (others?) and NEdit never reply to selection request
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perhaps a general Motif problem?
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currently sending all clipboards to all clients
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some clients may not need all clipboards
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add filtering mechanism
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must find app that correctly sets the CLIPBOARD selection for testing
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synergy must note changes to one or both selections
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seems to be having trouble with noting CLIPBOARD after PRIMARY changes
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investigate klipper
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KDE's clipboard manager?
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it crashed once when server did (see below)
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---
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got crash when opening netscape window after trying copy in KDE mail
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BadWindow in ChangeWindowAttributes
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also got it when trying to transfer big clipboard from secondary
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or just after transferring and perhaps trying to set locally
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---
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sometimes not sending correct clipboard
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some kind of race condition i think
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can select text then switch and get empty clipboard
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switching back to owner screen then out gets correct clipboard
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---
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screen resize should report new mouse position
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client could change it to keep mouse on screen
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server will need to know new position
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may need to ignore mouse events sent after resize but before server
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knows about the change.
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not handling screen resizing yet
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---
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not handling screen saver at all yet
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---
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slow leaving primary screen on X
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possibly due to getting primary clipboards
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possibly something else
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could try asynchronously getting primary clipboard
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race condition on secondary wrt pasting
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---
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win32 hook DLL sometimes not unloaded when server is killed?
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will get assertion on restart as if DLL was still loaded.
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can tell because all DLL copies share data segment.
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should prevent multiple copies from loading (or initializing)
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replace asserts with (multithread locked) check of variables
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return 0 if busy
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server must handle failure
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try to figure out why it's not unloading
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---
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test:
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X primary
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ctrl+alt+keypad_add, ctrl+alt_keypad_minus -> eaten by primary X server
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ctrl+alt+backspace probably eaten by primary X server if so configured
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ctrl+alt+delete probably eaten locally
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probably underneath primary X server too
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Win32 desktop -> X laptop
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eaten global hot keys:
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ctrl+alt+delete -> task manager (or logon or reboot)
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alt+[shift+]tab -> cycle through tasks
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alt+[shift+]esc -> cycle windows
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ctrl+esc -> start menu
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windows+R -> run dialog
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windows+M -> minimize all
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windows+shift+M -> undo minimize all
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windows+F1 -> help
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windows+E -> explorer
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windows+F -> find files
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windows+ctrl+F -> find computer
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windows+tab -> cycle through taskbar buttons
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windows+break -> system properties
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not eaten:
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alt+space -> system menu
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shift+F10 -> context menu
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app key -> context menu
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misc:
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accessibility shortcuts: not eaten but dialogs appear anyway
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X laptop -> Win32 desktop
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check:
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shift+tab -> okay
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alt+[shift+]tab -> okay
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alt+[shift+]esc -> okay
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ctrl+esc -> start menu -> okay
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ctrl+esc, esc, shift+F10 -> toolbar context menu -> okay
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F10 -> activate menu in explorer -> okay
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shift+F10 -> context menu -> okay
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alt+space -> context menu -> okay
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alt+hyphen -> MDI window menu -> okay
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alt+letter -> open corresponding menu -> okay
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alt+F6 -> switch between windows in single program -> okay
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shift+insert CD-ROM -> bypass auto-run
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check accessibility shortcuts -> does not work
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check accessibility features
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sticky keys -> no
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filter keys -> no
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toggle keys -> no
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mouse keys -> no
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high contrast -> no
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X desktop -> win32
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check:
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shift+tab
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windows+R -> run dialog
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windows+M -> minimize all
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windows+shift+M -> minimize all
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windows+F1 -> help
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windows+E -> explorer
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windows+F -> find files
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windows+ctrl+F -> find computer
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windows+tab -> cycle through taskbar buttons
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windows+break -> system properties
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app key -> context menu
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Win32 -> Win32
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alt+F6 -> eaten (isabel to audrey, but not audrey to isabel)
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check accessibility shortcuts work on secondary
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check accessibility features work on secondary
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---
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audrey->isabel
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num-lock light on isabel doesn't respond to generated events.
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seems to be linked to something lower-level. however, keytest
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does report num-lock keyboard state is being toggled.
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other toggle lights don't always respond immediately
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usually go on/off when active window changes though
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---
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avoid fullscreen transparent window
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using CBT hook to discard activation/focus messages
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but it's not being called when we lose keyboard input
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also, we sometimes don't get the keyboard input to start with
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---
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keyboard hook problems
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now passing keyboard events through in most cases
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this fixes problem on isabel where toggle lights don't toggle
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and num-lock behaved incorrectly (generated wrong keys).
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seems the DefWindowProc() needed to process the keys
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unfortunately, keys sometimes leak into wrong app. seems related
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to times when we don't get the keyboard input. key events are
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not delivered to app on primary until cursor returns to primary.
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no idea how that's possible.
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current have some code to check active window and reset it in
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keyboard hook. that code doesn't work.
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seem to be having problems with windows key now, too. looks like
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a down is sent but not the corresponding up so secondary system
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thinks the key is always down.
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---
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try to determine keyboard quirks automatically
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in particular, set the half-duplex flags
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maybe KBD extension will help determine this
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---
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blown assert:
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client crashed and primary jumped to primary
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left over queued motion events then processed
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caused call to CServer::onMouseMoveSecondary
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m_protocol is NULL because we're on primary screen
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must flush queued events when jumping to primary
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check for other things to do when jumping to primary
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---
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sending same clipboard repeatedly from win32 server
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can we detect no change?
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---
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key events sent to console on win me (95/98?) are very slow
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1/4 to 1/2 second delay before key up is processed
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key up log message is also delayed
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console causing a system-wide delay?
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---
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adjust thread priorities on win32
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maybe remove changes altogether
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currently isabel starts single-stepping mouse when dragging window
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sometimes it goes normal speed but it's mostly very slow
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even a very high priority doesn't seem to help
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haven't tried real-time priority
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a very high priority on client fixes delay when typeing into console
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is it the output console causing the slowness?
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---
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Accessibility Shortcuts
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Key Result
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-------------------------------------------------------------------
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Tap SHIFT 5 times Toggles StickyKeys on and off.
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Press down and hold the right Toggles FilterKeys on and off.
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SHIFT key for 8 seconds
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Press down and hold the NUM LOCK Toggles ToggleKeys on and off.
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key for 5 seconds
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Left ALT+left SHIFT+NUM LOCK Toggles MouseKeys on and off.
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Left ALT+left SHIFT+PRINT SCREEN Toggles High Contrast on and off.
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---
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disable ctrl+alt+del info:
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SystemParametersInfo(SPI_SETSCREENSAVERRUNNING, TRUE, &dummy, 0)
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fools system into thinking screen saver is running
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that disables ctrl+alt+del, alt+tab, ctrl+esc
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dunno if keystrokes are queued
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may be limited to win 95/98/me
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win nt sp 3 and above:
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low-level keyboard hook is called before ctrl+esc, alt+tab, alt+esc
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use that to capture and disable
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seems that low-level hook is notified of ctrl+alt+del but can't stop it
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win nt sp 2 and below
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ctrl+esc can be disabled by replacing task manager (dunno how)
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RegisterHotKey() can be used to catch alt+tab and alt+esc
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only while app is running, of course
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win nt
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keyboard filter driver can capture keys (see win NT DDK)
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http://216.239.51.100/search?q=cache:q-f03UHhFMMC:www.thescarms.com/VBasic/StopReBoot.asp+alt%2Btab+disable&hl=en
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some info on changing keyboard scan code mapping
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can be used to disable keys but looks like reboot is required
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---
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Q179905
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suggestion for bypassing hook code when called by debugger.
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may prevent system from getting locked up when debugging.
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