Este ejemplo funciona bien aqui:
#include "FiveWin.ch"
function Main()
local cText := "Hello" + CRLF + "world" + CRLF + "FiveWin"
local oDlg
DEFINE DIALOG oDlg RESOURCE "test"
REDEFINE GET cText ID 100 OF oDlg MULTILINE
ACTIVATE DIALOG oDlg CENTERED
return nil
// RESOURCE SCRIPT generated by "Pelles C for Windows, version 7.00".
#include <windows.h>
LANGUAGE LANG_ENGLISH,SUBLANG_ENGLISH_US
test DIALOGEX DISCARDABLE 6, 18, 274, 130
STYLE DS_SHELLFONT|WS_POPUP|DS_MODALFRAME|DS_CONTEXTHELP|DS_3DLOOK|WS_CAPTION|WS_SYSMENU|WS_VISIBLE
CAPTION "Dialog"
FONT 8, "Tahoma"
{
CONTROL "Edit", 100, "Edit", ES_MULTILINE|ES_AUTOHSCROLL|WS_BORDER|WS_TABSTOP, 4, 4, 216, 124
CONTROL "OK", IDOK, "Button", WS_TABSTOP, 224, 4, 45, 15
CONTROL "Cancel", IDCANCEL, "Button", WS_TABSTOP, 224, 20, 45, 15
}