How to detect clipboard copy

[kinook]

I created a function DrawClipboard triggered on QM file loaded:

Code:

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;\
function# hWnd message wParam lParam
if(hWnd) goto messages

hWnd=CreateWindowEx(0 +32770 0 0 0 0 0 0 0 0 _hinst 0) ;;this hidden window will receive messages
int+ __drawclip_wndproc=SetWindowLong(hWnd GWL_WNDPROC &DrawClipboard) ;;subclass
MessageLoop ;;retrieve messages; run until PostQuitMessage
ret

;messages
sel message
,case WM_DRAWCLIPBOARD
,out "draw clipboard"
;,mac("Process Clipboard")
,
,case WM_CLOSE if(wParam) DestroyWindow(hWnd)
,
,case WM_DESTROY
,PostQuitMessage 0
,
ret CallWindowProc(__drawclip_wndproc hWnd message wParam lParam)

I don't get any output when copying. Is it running? How do I tell? Thanks.