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f5a6d2738a
barrier/notes
crs f5a6d2738a checkpoint
2002-05-27 18:35:14 +00:00

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CServer
* must have connection thread in screen info map
allows disconnect if screen map changes and screen is removed
* put mutex locks wherever necessary (like accessing m_active)
server client
------ ------
[accept] <-- connect
challenge --> [encrypt]
[verify] <-- response (encrypted challenge, client name)
hangup if invalid
query info -->
<-- info (size)
---
use automake
---
need config file and parser
remove hard coded debugging stuff (in server.cpp)
---
win32:
need to support window stations
login screen on NT is a separate window station
provide taskbar icon
win32 dll:
should make this as small as possible
don't use standard libraries
use custom _DllMainCRTStartup(); just call DllMain() from it.
use /MERGE linker switch to merge sections
should use mutex on all public functions
---
not handling international characters
---
not handling screen saver at all yet
---
not distinguishing between caps lock and shift lock
In Caps Lock mode, the alphabetic keys send their uppercase (shifted) char-
acter when pressed alone. For Caps Lock mode, pressing and releasing the
lock key turns on the mode and pressing and releasing the lock key again
turns off the mode. In Shift Lock mode, all keys on the main keypad send
their shifted character when pressed alone. For Shift Lock mode, pressing
and releasing the Lock key turns on the mode, and pressing and releasing
either the Lock or the Shift key turns off the mode.
---
problems with CLIPBOARD and KDE and NEdit
KDE mail reader (others?) and NEdit never reply to selection request
perhaps a general Motif problem?
currently sending all clipboards to all clients
some clients may not need all clipboards
add filtering mechanism
must find app that correctly sets the CLIPBOARD selection for testing
synergy must note changes to one or both selections
seems to be having trouble with noting CLIPBOARD after PRIMARY changes
investigate klipper
KDE's clipboard manager?
it crashed once when server did (see below)
---
blown assertion
between client being added to screen list and sending screen size:
attempt to switch to that screen blows assert
x,y isn't inside screen because screen has zero size
maybe have a "ready" flag for each client
only count ready clients when finding neighbor
or don't add client to screen list until fully ready
---
got crash when opening netscape window after trying copy in KDE mail
BadWindow in ChangeWindowAttributes
also got it when trying to transfer big clipboard from secondary
or just after transferring and perhaps trying to set locally
---
sometimes not sending correct clipboard
some kind of race condition i think
can select text then switch and get empty clipboard
switching back to owner screen then out gets correct clipboard
---
win32 not sending correct clipboard
got 43 bytes sent for a 3 byte selection
remaining bytes were 0
problem persisted; also got 43 bytes for a 2 byte selection
---
slow leaving primary screen on X
possibly due to getting primary clipboards
possibly something else
could try asynchronously getting primary clipboard
race condition on secondary wrt pasting
---
win32 hook DLL sometimes not unloaded when server is killed?
will get assertion on restart as if DLL was still loaded.
can tell because all DLL copies share data segment.
should prevent multiple copies from loading (or initializing)
replace asserts with (multithread locked) check of variables
return 0 if busy
server must handle failure
try to figure out why it's not unloading
---
test:
X primary
ctrl+alt+keypad_add, ctrl+alt_keypad_minus -> eaten by primary X server
ctrl+alt+backspace probably eaten by primary X server if so configured
ctrl+alt+delete probably eaten locally
probably underneath primary X server too
Win32 desktop -> X laptop
eaten global hot keys:
ctrl+alt+delete -> task manager (or logon or reboot)
alt+[shift+]tab -> cycle through tasks
alt+[shift+]esc -> cycle windows
ctrl+esc -> start menu
windows+R -> run dialog
windows+M -> minimize all
windows+shift+M -> undo minimize all
windows+F1 -> help
windows+E -> explorer
windows+F -> find files
windows+ctrl+F -> find computer
windows+tab -> cycle through taskbar buttons
windows+break -> system properties
not eaten:
alt+space -> system menu
shift+F10 -> context menu
app key -> context menu
misc:
accessibility shortcuts: not eaten but dialogs appear anyway
X laptop -> Win32 desktop
check:
shift+tab -> okay
alt+[shift+]tab -> okay
alt+[shift+]esc -> okay
ctrl+esc -> start menu -> okay
ctrl+esc, esc, shift+F10 -> toolbar context menu -> okay
F10 -> activate menu in explorer -> okay
shift+F10 -> context menu -> okay
alt+space -> context menu -> okay
alt+hyphen -> MDI window menu -> okay
alt+letter -> open corresponding menu -> okay
alt+F6 -> switch between windows in single program -> okay
shift+insert CD-ROM -> bypass auto-run
check accessibility shortcuts -> does not work
check accessibility features
sticky keys -> no
filter keys -> no
toggle keys -> no
mouse keys -> no
high contrast -> no
X desktop -> win32
check:
shift+tab
windows+R -> run dialog
windows+M -> minimize all
windows+shift+M -> minimize all
windows+F1 -> help
windows+E -> explorer
windows+F -> find files
windows+ctrl+F -> find computer
windows+tab -> cycle through taskbar buttons
windows+break -> system properties
app key -> context menu
Win32 -> Win32
alt+F6 -> eaten (isabel to audrey, but not audrey to isabel)
check accessibility shortcuts work on secondary
check accessibility features work on secondary
---
audrey->isabel
num-lock light on isabel doesn't respond to generated events.
seems to be linked to something lower-level. however, keytest
does report num-lock keyboard state is being toggled.
other toggle lights don't always respond immediately
usually go on/off when active window changes though
---
avoid fullscreen transparent window on win32
using CBT hook to discard activation/focus messages
but it's not being called when we lose keyboard input
also, we sometimes don't get the keyboard input to start with
---
keyboard hook problems (win32)
now passing keyboard events through in most cases
this fixes problem on isabel where toggle lights don't toggle
and num-lock behaved incorrectly (generated wrong keys).
seems the DefWindowProc() needed to process the keys
unfortunately, keys sometimes leak into wrong app. seems related
to times when we don't get the keyboard input. key events are
not delivered to app on primary until cursor returns to primary.
no idea how that's possible.
current have some code to check active window and reset it in
keyboard hook. that code doesn't work.
seem to be having problems with windows key now, too. looks like
a down is sent but not the corresponding up so secondary system
thinks the key is always down.
---
try to determine keyboard quirks automatically
in particular, set the half-duplex flags
maybe KBD extension will help determine this
---
blown assert:
client crashed and primary jumped to primary
left over queued motion events then processed
caused call to CServer::onMouseMoveSecondary
m_protocol is NULL because we're on primary screen
must flush queued events when jumping to primary
check for other things to do when jumping to primary
---
key events sent to console on win me (95/98?) are very slow
1/4 to 1/2 second delay before key up is processed
key up log message is also delayed
console causing a system-wide delay?
---
adjust thread priorities on win32
maybe remove changes altogether
currently isabel starts single-stepping mouse when dragging window
sometimes it goes normal speed but it's mostly very slow
even a very high priority doesn't seem to help
haven't tried real-time priority
a very high priority on client fixes delay when typeing into console
is it the output console causing the slowness?
---
Accessibility Shortcuts
Key Result
-------------------------------------------------------------------
Tap SHIFT 5 times Toggles StickyKeys on and off.
Press down and hold the right Toggles FilterKeys on and off.
SHIFT key for 8 seconds
Press down and hold the NUM LOCK Toggles ToggleKeys on and off.
key for 5 seconds
Left ALT+left SHIFT+NUM LOCK Toggles MouseKeys on and off.
Left ALT+left SHIFT+PRINT SCREEN Toggles High Contrast on and off.
---
disable ctrl+alt+del info:
SystemParametersInfo(SPI_SETSCREENSAVERRUNNING, TRUE, &dummy, 0)
fools system into thinking screen saver is running
that disables ctrl+alt+del, alt+tab, ctrl+esc
dunno if keystrokes are queued
may be limited to win 95/98/me
win nt sp 3 and above:
low-level keyboard hook is called before ctrl+esc, alt+tab, alt+esc
use that to capture and disable
seems that low-level hook is notified of ctrl+alt+del but can't stop it
win nt sp 2 and below
ctrl+esc can be disabled by replacing task manager (dunno how)
RegisterHotKey() can be used to catch alt+tab and alt+esc
only while app is running, of course
win nt
keyboard filter driver can capture keys (see win NT DDK)
http://216.239.51.100/search?q=cache:q-f03UHhFMMC:www.thescarms.com/VBasic/StopReBoot.asp+alt%2Btab+disable&hl=en
some info on changing keyboard scan code mapping
can be used to disable keys but looks like reboot is required
---
Q179905
suggestion for bypassing hook code when called by debugger.
may prevent system from getting locked up when debugging.
---
config file format:
section screens
<screen>:
# args in any order
# not sure if any args
end
section links
<screen>:
# args in any order
[left=<screen>]
[right=<screen>]
[up=<screen>]
[down=<screen>]
end
---
will have to redo clipboard stuff on win32
need timeout on CReply objects
should flush replies that are too old
assumption is that requestor is broken
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