v1 → v2 for OnMessage

[kdaube]

Dear experts
When converting a short script to v2 I struggle with "Invalid callback function":
V1 version:

Code: Select all

; Listen to the Windows power event "WM_POWERBROADCAST" (ID: 0x218):
OnMessage(0x218, "WM_POWERBROADCAST")
Return

WM_POWERBROADCAST(wParam, lParam) {
  FormatTime, now, , ddd yyyy-MM-dd HH:mm:ss
  FileAppend `n%now%%A_TAB%WM_POWERBROADCAST wParam = %wParam%, D:\System_ddd\logs\_system_log.txt
  Return
}

v2 version

Code: Select all

#Requires AutoHotkey v2.0
OnMessage(0x218, WM_POWERBROADCAST)  ; ← Invalid callback function.
Return

WM_POWERBROADCAST(wParam, lParam) {
  now := FormatTime(, "ddd yyyy-MM-dd HH:mm:ss")
  FileAppend("`n" now  A_TAB "WM_POWERBROADCAST wParam = " wParam, "D:\System_ddd\logs\_system_log.txt")
  Return
}

How can I define this correctly?

[mikeyww]

Code: Select all

#Requires AutoHotkey v2.0
Persistent
OnMessage 0x218, WM_POWERBROADCAST

WM_POWERBROADCAST(wParam, lParam, msg, hwnd) {
 MsgBox 123
}

Explained: OnMessage

[teadrinker]

Or WM_POWERBROADCAST(wParam, lParam, *)

[flyingDman]

If you only need wParam you can do this:

Code: Select all

OnMessage(0x218, WM_POWERBROADCAST)
Return

WM_POWERBROADCAST(wParam, *) {
if wParam = 10
	msgbox "Power status has changed"
}

(which works when I unplug my laptop)

[kdaube]

Thank you, mikeyww - it works now.