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KEYSEND()
Simulates CA-Clipper keyboard buffer input
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Syntax
KEYSEND(<cKeyValue>,[<lAdditiveMode>]) --> lPassed
Arguments
<cKeyValue> Designates one or more sequences that are placed in the
keyboard buffer.
<lAdditiveMode> Designates an optional parameter. If this
parameter is .T., then the key codes passed are added to the contents of
the keyboard buffer. If the parmeter is .F. or if no parameter is
passed, the contents of the keyboard buffer are overwritten.
Returns
When the string has been placed successfully in the CA-Clipper keyboard
buffer, the function returns a value of .T.. If an error occurs, the
return value is .F..
Description
KEYSEND() works similarly to the CA-Clipper KEYBOARD command. However,
it allows you to use other codes for the characters that are stuffed.
Symbolic constants for these key codes can be found in the CTSCAN.CH
include file and in Appendix A. By using this unique coding for
characters in the keyboard buffer, KEYSEND() allows you to place keys in
the buffer that CA-Clipper's KEYBOARD command does not permit, such as
codes smaller than 0 or greater than 255 (e.g. all function keys and
most Alt combinations). This unique coding is also helpful for two keys
that have the same INKEY() value and cannot be differentiated with the
KEYBOARD command.
If you want to place normal characters like letters and numbers in the
keyboard buffer, it is better to use the CA-Clipper KEYBOARD command.
Using CA-Clipper Tools functions for normal characters provides no real
advantage. If, on the other hand, you want to simulate other keyboard
input, like function or control keys, then KEYSEND() is best to use
because function and control keys can be clearly differentiated.
As with the CA-Clipper KEYBOARD command, the entire contents of the
keyboard buffer are cleared as soon as KEYSEND() passes a new character.
If <lAdditiveMode> is .T., the function adds the key codes to the
current buffer contents.
Notes
. Key codes in CA-Clipper Tools have been extended, but the old
codes are still valid (see include file CTSCAN.CH).
. The maximum length of the string to be saved is now calculated
as follows:
maximum allocatable memory / 2
Example
Simulate the function key Alt-F10:
KEYSEND(KS_ALT_F10)
See Also:
KEYREAD()
DSETTYPE()
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