#include <GUIConstantsEx.au3>
#include <WindowsConstants.au3>
#include <GUIEdit.au3>
Global $hBrush = _WinAPI_CreateSolidBrush(0xFFFFFF)
$hGUI = GUICreate('Edit', 200, 200)
$hEdit = _GUICtrlEdit_Create($hGUI, 'First string' & @CRLF & 'Second string', 20, 20, 160, 160)
GUIRegisterMsg($WM_CTLCOLOREDIT, '_WM_CTLCOLOREDIT')
GUISetState()
While 1
Switch GUIGetMsg()
Case $GUI_EVENT_CLOSE
_WinAPI_DeleteObject($hBrush)
Exit
EndSwitch
WEnd
Func _WM_CTLCOLOREDIT($hWnd, $iMsg, $iWParam, $iLParam)
If $iLParam = $hEdit Then
_WinAPI_SetBkColor($iWParam, 0x00FF00)
Return $hBrush
EndIf
Return $GUI_RUNDEFMSG
EndFunc ;==>_WM_CTLCOLOREDIT