I'm in the middle of adding a shared clipboard to a text editor based on (Lazarus's) SynEdit. This is a simple stopgap based on a backend database, but also allows me to exercise PostgreSQL's listen/notify and hopefully also the Firebird equivalent both of which I want for something else.

What I've got works fine if I use a menu entry to do copy or cut, but is there a simple way to hook SynEdit's reaction to ^C and ^X so that I can transfer stuff to the backend automatically?

OnProcessCommand

(if not that then OnProcessUserCommand commands are splitted into build in and user. ecCopy ecCut ecPaste should be build in)

The above only works if lynedit handles the keyboard.

If you call SynEdit.CopyToClipboard (TAction might do that?) then the above does not trigger

use

     property OnCutCopy: TSynCopyPasteEvent read FOnCutCopy write
FOnCutCopy;
     property OnPaste: TSynCopyPasteEvent read FOnPaste write FOnPaste;

which should always trigger

Thanks Martin, noted. As an interim measure I ended up detecting ^C etc. in the key-up event, which /might/ be safer since I'm already filtering keys to implement an APL-style keyboard and /might/ be the only way to handle e.g. a non-standard clipboard-swap operation. However I'll revisit "the proper way" when some of the dust has settled, one particular thing that I'll want to check is what happens when one runs with e.g. a Sun keyboard which has explicit cut/copy keys.

this is during keyboard processing too.

SynEdit will have translated it int ecCopy

IIRC SynEdit handles ctrl-c in keydown

You can prevent SynEdit from handling the keystroke, by removing it from SynEdit,KeyStrokes (or similar)