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Function Reference _GUIRegisterMsgEx.au3 Register a user defined function for a known Windows Message ID (WM_MSG) to an individual ctrl using Call Back! Sintax: _GUICtrlMsg_Register( controlID, MsgID, "Function" ) _GUICtrlMsg_UnRegister( hWnd [, MsgID ]) Supports: ; AutoIt GUI controls to register message! Downloads: Version: 0.9b _GUIRegisterMsgEx_(RedirectLink).html Note: The functions have new parameters!, see fixes below! You can use this UDF in controls that consume internally specific Windows Message ID that we could not register with the GUIRegisterMsg function, eg: WM_CHAR, WM_KEYDOWN, WM_KEYUP are consumed by an edit control. Usage example is included! Sample: Fixes: I.e: Func _MyRegisterFunc( $hCtrlID, $iMsgID, $WParam, $LParam ) ;... EndFunc The 4 parameters have the following values: hCtrlID, The control handle in which the message is registered.iMsg, The Windows message ID.wParam, The first message parameter as hex value.lParam, The second message parameter as hex value. (Position. Parameter, Meaning) 0.9.0812.2600b09/09/2012 -> First release!I like to use UDFs, although I think this will not be very useful, I hope someone will find useful! Regards, João Carlos.