I use the code post here sometimes ago but it stop on compiling at the red line saying "Duplicate frmhandleevent":
Why and how can I fix it? 
Thank you very much
{$r FirstDA.rsrc}
{$code DAcc,DA01,code,1000}
// DA01 est le CreatorID
Program FirstDA;
{$i PalmAPI.pas}
Const
FORM1=1000;
function FrmHandleEvent(formP:FormPtr;var event:EventType):boolean;inline(SYSTRAP,$A17A);
procedure EvtAddEventToQueue(const event:EventType);inline(SYSTRAP,$A11B);
function HandleEvent(var evt:EventType):boolean;
var
frmP : FormPtr;
begin
frmP:=FrmGetActiveForm;
HandleEvent:=false;
case evt.eType of
appStopEvent:
begin
EvtAddEventToQueue(evt);
HandleEvent:=true;
end;
ctlSelectEvent:
begin
WinDrawChars('Hello World !',13,20,20);
end;
penDownEvent:
begin
if (evt.ScreenX<1) or (evt.ScreenX>100) or (evt.ScreenY<1) or (evt.ScreenY>80) then HandleEvent:=true;
end;
end;
end;
procedure AppEventLoop;
var
evt : EventType;
done : boolean;
begin
repeat
EvtGetEvent(evt,evtWaitForever);
if not SysHandleEvent(evt) then
if not FrmHandleEvent(FrmGetActiveForm,evt) then
done:=HandleEvent(evt);
until (evt.eType=appStopEvent) or (done=true);
end;
Var
form:FormPtr;
evt : EventType;
begin
form := FrmInitForm(FORM1);
FrmSetActiveForm(form);
FrmDrawForm(form);
AppEventLoop;
FrmEraseForm(form);
FrmDeleteForm(form);
end.
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