#include <GuiRichEdit.au3>
#include <GUIConstantsEx.au3>
#include <WindowsConstants.au3>

Main()

Func Main()
	Local $hGui, $ai, $lblMsg, $hRichEdit
	$hGui = GUICreate(StringTrimRight(@ScriptName, 4), 420, 350, -1, -1)
	$hRichEdit = _GUICtrlRichEdit_Create($hGui, 'Это тест.', 10, 10, 400, 220, _
			BitOR($ES_MULTILINE, $WS_VSCROLL, $ES_AUTOVSCROLL))
	$lblMsg = GUICtrlCreateLabel("", 10, 235, 300, 60)
	GUISetState()

	_GUICtrlRichEdit_AppendText($hRichEdit, @CR & 'Добавленный текст.')

	$ai = _GUICtrlRichEdit_FindTextinRange($hRichEdit, "тЕст", 20, 3)
	If $ai[0]<>-1 And $ai[1]<>-1 Then
		GUICtrlSetData($lblMsg, '"тЕст" найден между позициями символов ' & $ai[0] & " и " & $ai[1])
		_GUICtrlRichEdit_SetSel($hRichEdit, $ai[0], $ai[1])
	Else
		GUICtrlSetData($lblMsg, 'Не найдено')
	EndIf

	While 1
		Switch GUIGetMsg()
			Case $GUI_EVENT_CLOSE
				_GUICtrlRichEdit_Destroy($hRichEdit)
				GUIDelete()
				Exit
		EndSwitch
	WEnd
EndFunc   ;==>Main