http://www.autohotkey.com/docs/misc/SendMessageList .htm pomocou Google:

http://www.google.sk/search?hl=sk&client=firefox-a& rls=org.mozilla%3Ask%3Aofficial&q=windows+messages & btnG=H%C4%BEada%C5%A5&meta=

Edit: Aký je rozdiel medzi prvými a poslednými správami (majú rovnaké čísla)?

WM_MOUSEFIRST = 0x200
WM_MOUSEMOVE = 0x200
WM_LBUTTONDOWN = 0x201
WM_LBUTTONUP = 0x202
WM_LBUTTONDBLCLK = 0x203
WM_RBUTTONDOWN = 0x204
WM_RBUTTONUP = 0x205
WM_RBUTTONDBLCLK = 0x206
WM_MBUTTONDOWN = 0x207
WM_MBUTTONUP = 0x208
WM_MBUTTONDBLCLK = 0x209
WM_MOUSELAST = 0x20A
WM_MOUSEWHEEL = 0x20A