not sure exactly to what you're referring to here
but I found this in Borland's MS API help after about
5 secs. of searching (entered "repeat" in the Find
tab's search combobox and selected the below topic).
Maybe it's useful to you:
Keystroke Message Flags
The lParam parameter of a keystroke message contains
additional information about the keystroke that
generated the message. This information includes the
repeat count, the scan code, the extended-key flag,
the context code, the previous key-state flag, and the
transition-state flag. The following illustration
shows the locations of these flags and values in the
lParam parameter:
An application can use the following values to
manipulate the keystroke flags:
Value Meaning
KF_ALTDOWN Manipulates the ALT key flag, which
indicated if the ALT key is pressed.
KF_DLGMODE Manipulates the dialog mode flag, which
indicates whether a dialog box is active.
KF_EXTENDED Manipulates the extended key flag.
KF_MENUMODE Manipulates the menu mode flag, which
indicates whether a menu is active.
KF_REPEAT Manipulates the repeat count.
KF_UP Manipulates the transition state flag.
Repeat Count
You can check the repeat count to determine whether a
keystroke message represents more than one keystroke.
The system increments the count when the keyboard
generates WM_KEYDOWN or WM_SYSKEYDOWN messages faster
than an application can process them. This often
occurs when the user holds down a key long enough to
start the keyboard's automatic repeat feature. Instead
of filling the system message queue with the resulting
key-down messages, the system combines the messages
into a single key down message and increments the
repeat count. Releasing a key cannot start the
automatic repeat feature, so the repeat count for
WM_KEYUP and WM_SYSKEYUP messages is always set to 1.
Scan Code
The scan code is the value that the keyboard hardware
generates when the user presses a key. It is a
device-dependent value that identifies the key
pressed, as opposed to the character represented by
the key. An application typically ignores scan codes.
Instead, it uses the device-independent virtual-key
codes to interpret keystroke messages.
Extended-Key Flag
The extended-key flag indicates whether the keystroke
message originated from one of the additional keys on
the enhanced keyboard. The extended keys consist of
the ALT and CTRL keys on the right-hand side of the
keyboard; the INS, DEL, HOME, END, PAGE UP, PAGE DOWN
and arrow keys in the clusters to the left of the
numeric keypad; the NUM LOCK key; the BREAK
(CTRL+PAUSE) key; the PRINT SCRN key; and the divide
(/) and ENTER keys in the numeric keypad. The
extended-key flag is set if the key is an extended
key.
Context Code
The context code indicates whether the ALT key was
down when the keystroke message was generated. The
code is 1 if the ALT key was down and 0 if it was up.
Previous Key-State Flag
The previous key-state flag indicates whether the key
that generated the keystroke message was previously up
or down. It is 1 if the key was previously down and 0
if the key was previously up. You can use this flag to
identify keystroke messages generated by the
keyboard's automatic repeat feature. This flag is set
to 1 for WM_KEYDOWN and WM_SYSKEYDOWN keystroke
messages generated by the automatic repeat feature. It
is always set to 0 for WM_KEYUP and WM_SYSKEYUP
messages.
Transition-State Flag
The transition-state flag indicates whether pressing a
key or releasing a key generated the keystroke
message. This flag is always set to 0 for WM_KEYDOWN
and WM_SYSKEYDOWN messages; it is always set to 1 for
WM_KEYUP and WM_SYSKEYUP messages.
--- Christian Labrie <[EMAIL PROTECTED]>
wrote:
> Anybody knows?
>
> I've searched a lot but now I'm kind of out of
> ideas.
>
> Thanks
>
>
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