text editor

hi..i m making an app with 3 containers n 3 views n 3 tabs....in first view i want a text editor..in which i an write text n store it to a file
at particular location. i have already added resource or text editor...the resorces r as

RESOURCE EDWIN r_plaintexteditor_editor
{
width = KWidth;
lines = KLines;
maxlength = KMaxLength;
flags = EEikEdwinWidthInPixels;
avkon_flags = EAknEditorFlagNoT9;
default_case = EAknEditorLowerCase;
allowed_case_modes = EAknEditorUpperCase |
EAknEditorLowerCase;
numeric_keymap = EAknEditorPlainNumberModeKeymap;
allowed_input_modes = EAknEditorTextInputMode |
EAknEditorNumericInputMode;
default_input_mode = EAknEditorTextInputMode;
special_character_table = R_AVKON_SPECIAL_CHARACTER_TABLE_DIALOG;
}

then i called contructL in container.cpp
void CMultiViewsContainer1::ConstructL(const TRect& aRect)
{
CreateWindowL();



iEditor = new (ELeave) CEikEdwin;
iEditor->SetContainerWindowL(*this);
TResourceReader reader;
iCoeEnv->CreateResourceReaderLC(reader, R_PLAINTEXTEDITOR_EDITOR);
iEditor->ConstructFromResourceL(reader);
CleanupStack::PopAndDestroy(); // reader
iEditor->SetFocus(ETrue);

SetRect(aRect);
ActivateL();
}included all headers n libs..but still getting a error
"undefined identifier R_PLAINTEXTEDITOR_EDITOR in container.cpp"
plzzz help me thanx in advance m a debutante in symbian