selc - select-copy

  selc [-i] [-k] [-u] [-v]

Windows X11-PRIMARY analogue: selecting text copies it. A drag,
double-click, shift+click, or shift+arrow selection is copied to
the clipboard. No tray, no window, one process, a mouse hook that
only snapshots points.

	selc        run (no-op if already running)
	selc -i     write HKCU Run (start at logon) and run
	selc -u     remove HKCU Run and stop
	selc -k     stop the running instance
	selc -v     run with a console; print copy method


Build

	make
	make install
	make boot

boot is install plus selc -i. The binary is a Windows subsystem
image; launching it from Explorer or Run does not open a console.
as(1) and ld(1) must be the MinGW ones; config.mk prepends
MINGWBIN to PATH.

Default install path: %USERPROFILE%\.local\bin
Override: make PREFIX=... install


How

A WH_MOUSE_LL hook (and optionally WH_KEYBOARD_LL) records the
gesture on the hook thread and posts to a message-only window.
The window waits COPYWAIT ms so the target app can finish the
selection, then:

	1. ignore non-client hits (caption, scrollbars, resize)
	2. ignore password Edit controls
	3. WM_COPY to the focused child (SendMessageTimeout)

No keys are injected. Apps that do not handle WM_COPY (most
GPU terminals and editors) are left alone; they will not see
Ctrl+C or a stray 'c'.

Logon autostart is HKCU\...\Run\selc, so it starts with the
interactive session. That is the right time; a clipboard helper
cannot run in session 0.


Remarks

UIPI: an unelevated selc cannot copy from an elevated window.
Run it at the same integrity level as the programs you use.

Edit config.h (copied from config.def.h) for thresholds.
Recompile.