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No, it is the PROPERTY, so it does not "return" anything.
You can however check if it is set.
doc.Name = "something";
if( doc.Name != "something" )
{
// property set was not succesful
}
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "ozzyapeman" <zoopfree@xxxxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Wednesday, May 20, 2009 10:54 PM
Subject: [amibroker] Re: How to pass variables from AFL to embedded JScript?
> and since Dingo resurrected the topic, I also have a follow-up question...
>
> If I change doc.name to junk that does not exist, like "xyqst", I do not get an error message. Shouldn't something like this
> generate an error? Otherwise if I make a typo, I'll never know if the actual doc was used for the operation.
>
>
> --- In amibroker@xxxxxxxxxxxxxxx, dingo <waledingo@xxx> wrote:
>>
>> BUT, why didn't his use of AB.ActiveDocument.Name work? Isn't it supposed
>> to according to how OLE object names are constructed?
>>
>>
>> d
>>
>>
>> On Wed, May 13, 2009 at 7:19 PM, Tomasz Janeczko <groups@xxx>wrote:
>>
>> >
>> >
>> > AB = CreateObject("Broker.Application");
>> > doc = AB.ActiveDocument;
>> > doc.Name = "EURUSD";
>> >
>> > Best regards,
>> > Tomasz Janeczko
>> > amibroker.com
>> >
>> > ----- Original Message -----
>> > *From:* ozzyapeman <zoopfree@xxx>
>> > *To:* amibroker@xxxxxxxxxxxxxxx
>> > *Sent:* Thursday, May 14, 2009 12:36 AM
>> > *Subject:* [amibroker] Re: How to pass variables from AFL to embedded
>> > JScript?
>> >
>> > Bumping thread.
>> >
>> > Can anyone point out why the ActiveDocument switch in the simple two lines
>> > below, generates a syntax error? I've used it many times before in JScript.
>> > But now that I am staying within AFL for OLE, that switch no longer works.
>> >
>> > I can't find anything in the manual that says the below should be any
>> > different.
>> >
>> >
>> > AB = CreateObject("Broker.Application");
>> >
>> > AB.ActiveDocument.Name <http://ab.activedocument.name/> = "EURUSD";
>> >
>> >
>> >
>> >
>> >
>> >
>> > --- In amibroker@xxxxxxxxxxxxxxx, "ozzyapeman" <zoopfree@> wrote:
>> > >
>> > > I've eliminated JScript and am instead calling objects from within AFL.
>> > > But now I am running into a syntax error on what used to be a routine
>> > > call in JScript: ActiveDocument.Name
>> > >
>> > > I get a non specific syntax error when trying to set
>> > > ActiveDocument.Name, as below. Anyone know why? Is that object treated
>> > > differently in AFL compared to JScript? I can set it fine in JScript
>> > > with the same code below, just switching the AB object to an ActiveX.
>> > >
>> > >
>> > > Database = "F:\\AB Databases\\MyDB";
>> > >
>> > > AB = CreateObject("Broker.Application");
>> > >
>> > > AA = AB.Analysis;
>> > >
>> > > AB.LoadDatabase( Database );
>> > >
>> > > AB.ActiveDocument.Name <http://ab.activedocument.name/> = "EURUSD";
>> > >
>> > >
>> > >
>> > >
>> > > --- In amibroker@xxxxxxxxxxxxxxx, "ozzyapeman" zoopfree@ wrote:
>> > > >
>> > > > Thanks for the detailed explanations Tomasz. I will rethink my
>> > > approach on this.
>> > > >
>> > > > Herman - Bruce beat me to it. I indeed use his code to check status of
>> > > the WF engine. It has proven very useful.
>> > > >
>> > > >
>> > > > --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" groups@ wrote:
>> > > > >
>> > > > > Yes I agree, of course there are always few things that make scripts
>> > > handy, and
>> > > > > my approach is to leave doors open in the application, however, I
>> > > always
>> > > > > verbally discourage certain techniques, unless someone is very well
>> > > aware of consequences
>> > > > > and issues behind them.
>> > > > >
>> > > > > Best regards,
>> > > > > Tomasz Janeczko
>> > > > > amibroker.com
>> > > > > ----- Original Message -----
>> > > > > From: bruce1r
>> > > > > To: amibroker@xxxxxxxxxxxxxxx
>> > > > > Sent: Tuesday, May 12, 2009 3:10 PM
>> > > > > Subject: [amibroker] Re: How to pass variables from AFL to
>> > > embedded JScript?
>> > > > >
>> > > > >
>> > > > >
>> > > > >
>> > > > > Tomasz -
>> > > > >
>> > > > > Just to make note of the some exceptions to your note about lack
>> > > of reasons to run JScript/VBScript, there are still a few non-mainstream
>> > > things that it makes possible. Just to list a few -
>> > > > >
>> > > > > 1.. Manipulation of COM arrays that allows a very fast way to
>> > > get AFL arrays into and out of Excel.
>> > > > >
>> > > > > 2.. Detecting the closing of a COM server via the On Error logic
>> > > in VBScript. Users have a bad habit of closing them and it can't be
>> > > detected and handled in AFL.
>> > > > > 3.. Getting lists of files and directories.
>> > > > > 4.. Sorting CSV lists in JScript.
>> > > > > etc....
>> > > > >
>> > > > > I don't like script much either, but I'm glad that you originally
>> > > did it. There are other ways of doing these and other tasks that I
>> > > usually prefer (DLL, COM DLL, etc.). But it is kind of like having a
>> > > carpenter having a hand plane in his toolbox. Power tools are better,
>> > > but on the rare occasion when a hand plane can be used, you are glad
>> > > that it is handy and that you have it.
>> > > > >
>> > > > > -- BruceR
>> > > > >
>> > > > >
>> > > > > --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@>
>> > > wrote:
>> > > > > >
>> > > > > > I should add that embedding JScript/VBScript in formula is old
>> > > technology and was intended
>> > > > > > as a way to support looping in very old and dark ages when there
>> > > was no native looping in
>> > > > > > AFL. Now AFL allows everything that JScript/VBScript and more
>> > > plus it is 10x faster
>> > > > > > and there is absolutely NO reason to use JScript/VBScript
>> > > anymore. It is left here ONLY
>> > > > > > to allow run legacy formulas.
>> > > > > > No new code should use JScript/VBScript.
>> > > > > >
>> > > > > > Second thing is that OLE AUTOMATION is intended to be used only
>> > > FROM OUTSIDE
>> > > > > > of AmiBroker. Using it within formulas from inside AB, may
>> > > inevitably lead to "chicken and egg" (circular reference) problem
>> > > > > > and is not supported.
>> > > > > > It is important that OLE automation was always thought by
>> > > Microsoft as a method of controlling ONE application
>> > > > > > from ANOTHER application.
>> > > > > >
>> > > > > > Best regards,
>> > > > > > Tomasz Janeczko
>> > > > > > amibroker.com
>> > > > > > ----- Original Message -----
>> > > > > > From: Tomasz Janeczko
>> > > > > > To: amibroker@xxxxxxxxxxxxxxx
>> > > > > > Sent: Tuesday, May 12, 2009 9:41 AM
>> > > > > > Subject: Re: [amibroker] Re: How to pass variables from AFL to
>> > > embedded JScript?
>> > > > > >
>> > > > > >
>> > > > > >
>> > > > > >
>> > > > > >
>> > > > > > Hello,
>> > > > > >
>> > > > > > No you are not allowed to run scripting host code within
>> > > conditional expression.
>> > > > > >
>> > > > > > The Microsoft SCRIPTING host is INDEPENDENT, i.e. it executes on
>> > > its own,
>> > > > > > in parallel and its "global" parts are simply extracted from the
>> > > formula and run unconditionally
>> > > > > > before actual AFL execution.
>> > > > > >
>> > > > > > If you need to call something in script conditionally you have
>> > > two choices:
>> > > > > > a) either write condition in JScript/VBScript
>> > > > > > OR
>> > > > > > b) write a FUNCTION in JScript/VBScript and call that function
>> > > conditionally from AFL level
>> > > > > > as shown below:
>> > > > > >
>> > > > > >
>> > > > > > EnableScript( "jscript" );
>> > > > > > <%
>> > > > > > // NO global code, only function definition
>> > > > > >
>> > > > > > function DoTheJob()
>> > > > > > {
>> > > > > > AB = new ActiveXObject( "Broker.Application" );
>> > > > > > AA = AB.Analysis;
>> > > > > > }
>> > > > > >
>> > > > > > %>
>> > > > > >
>> > > > > > Test = 4;
>> > > > > > if( Test == 4 )
>> > > > > > {
>> > > > > > scr = GetScriptObject();
>> > > > > > scr.DoTheJob();
>> > > > > > }
>> > > > > >
>> > > > > > Best regards,
>> > > > > > Tomasz Janeczko
>> > > > > > amibroker.com
>> > > > > > ----- Original Message -----
>> > > > > > From: ozzyapeman
>> > > > > > To: amibroker@xxxxxxxxxxxxxxx
>> > > > > > Sent: Tuesday, May 12, 2009 7:36 AM
>> > > > > > Subject: [amibroker] Re: How to pass variables from AFL to
>> > > embedded JScript?
>> > > > > >
>> > > > > >
>> > > > > > Okay, this is bizarre. I am testing out some embedded JScript
>> > > for a related application to what I posted earlier. This one is not
>> > > happening within the AA, but is nonetheless still inside an AFL.
>> > > > > >
>> > > > > > The following simple code is fine, and does not generate a
>> > > syntax error:
>> > > > > >
>> > > > > > //Test = 4;
>> > > > > >
>> > > > > > //if ( Test == 4 )
>> > > > > > //{
>> > > > > >
>> > > > > > EnableScript( "jscript" );
>> > > > > > <%
>> > > > > >
>> > > > > > AB = new ActiveXObject( "Broker.Application" );
>> > > > > > AA = AB.Analysis;
>> > > > > >
>> > > > > > %>
>> > > > > >
>> > > > > > //}
>> > > > > >
>> > > > > >
>> > > > > > However, if I uncomment all the "//" I get a syntax error.
>> > > > > >
>> > > > > > Are we not allowed to call a JScript inside an IF block? If not,
>> > > why the heck not? And if we are allowed, why would it be generating a
>> > > syntax error in this simple case?
>> > > > > >
>> > > > > > The error I get is on the "<%" --> probably missing semi colon
>> > > on previous line.
>> > > > > >
>> > > > > > But the semi colon is clearly there.
>> > > > > >
>> > > > > > Anyone's two cents appreciated.
>> > > > > >
>> > > > > >
>> > > > > >
>> > > > > > --- In amibroker@xxxxxxxxxxxxxxx, "ozzyapeman" zoopfree@ wrote:
>> > > > > > >
>> > > > > > > Thanks for that tip.
>> > > > > > >
>> > > > > > > Guess I will have to write a WF type routine in JScript and
>> > > call each optimize individually, from outside AA.
>> > > > > > >
>> > > > > > >
>> > > > > > > --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" groups@
>> > > wrote:
>> > > > > > > >
>> > > > > > > > During any AA operation in progress, you must not
>> > > > > > > > use Analysis object to start another AA operation
>> > > > > > > > (because it is infinite nesting)
>> > > > > > > >
>> > > > > > > > Analysis object may only be used from OUTSIDE
>> > > > > > > > of AA.
>> > > > > > > >
>> > > > > > > > To run "suboptimization" use THE ONLY supported
>> > > > > > > > way, i.e. Optimizer API (see optimizer.html file in the ADK
>> > > subfolder).
>> > > > > > > >
>> > > > > > > > Best regards,
>> > > > > > > > Tomasz Janeczko
>> > > > > > > > amibroker.com
>> > > > > > > > ----- Original Message -----
>> > > > > > > > From: "ozzyapeman" zoopfree@
>> > > > > > > > To: amibroker@xxxxxxxxxxxxxxx
>> > > > > > > > Sent: Tuesday, May 12, 2009 3:11 AM
>> > > > > > > > Subject: [amibroker] Re: How to pass variables from AFL to
>> > > embedded JScript?
>> > > > > > > >
>> > > > > > > >
>> > > > > > > > > And if there is no way to pass variables directly from AFL
>> > > to JScript,
>> > > > > > > > > can I first fput the AFL vars to some kind of log file,
>> > > and then is
>> > > > > > > > > there a command in JScript that can pull those vars to use
>> > > for the
>> > > > > > > > > Dates?
>> > > > > > > > >
>> > > > > > > > > I can also use VBscript, if that makes any difference. I'm
>> > > just not all
>> > > > > > > > > that knowledgeable about either J or VB scripts.
>> > > > > > > > >
>> > > > > > > > >
>> > > > > > > > >
>> > > > > > > > > --- In amibroker@xxxxxxxxxxxxxxx, "ozzyapeman" <zoopfree@>
>> > > wrote:
>> > > > > > > > >>
>> > > > > > > > >> Hello, hoping someone can help out here. During a
>> > > Walk-Forward test, I
>> > > > > > > > >> am trying to pass From and To dates from the WF engine
>> > > into an
>> > > > > > > > > embedded
>> > > > > > > > >> JScript. I essentially want to do a "sub-optimization" as
>> > > part of the
>> > > > > > > > >> backtest portion of the WF test. However, it seems that I
>> > > cannot pass
>> > > > > > > > >> variables from the AFL to the JScript.
>> > > > > > > > >>
>> > > > > > > > >> Is there any way to pass the From and To dates into the
>> > > JScript? Below
>> > > > > > > > >> is what I have. It generates an 'undefined source' error
>> > > for these
>> > > > > > > > >> lines:
>> > > > > > > > >>
>> > > > > > > > >>
>> > > > > > > > >> AA.RangeFromDate = FromDateStr;
>> > > > > > > > >> AA.RangeToDate = ToDateStr;
>> > > > > > > > >>
>> > > > > > > > >>
>> > > > > > > > >> Here is the AFL with embedded JScript:
>> > > > > > > > >>
>> > > > > > > > >> FromDateNum = Status( "rangefromdate" );
>> > > > > > > > >> ToDateNum = Status( "rangetodate" );
>> > > > > > > > >>
>> > > > > > > > >> FromDate = DateTimeConvert( 2, FromDateNum );
>> > > > > > > > >> ToDate = DateTimeConvert( 2, ToDateNum );
>> > > > > > > > >>
>> > > > > > > > >> FromDateStr = DateTimeToStr( FromDate );
>> > > > > > > > >> ToDateStr = DateTimeToStr( ToDate );
>> > > > > > > > >>
>> > > > > > > > >>
>> > > > > > > > >> EnableScript( "jscript" );
>> > > > > > > > >> <%
>> > > > > > > > >>
>> > > > > > > > >> Formula = "F:\\SomeFormula.afl";
>> > > > > > > > >> Database = "F:\\AB Databases\\MyIB";
>> > > > > > > > >> Settings = "F:\\Some Settings.ABS";
>> > > > > > > > >>
>> > > > > > > > >> AB = new ActiveXObject( "Broker.Application" );
>> > > > > > > > >> AA = AB.Analysis;
>> > > > > > > > >>
>> > > > > > > > >> AB.LoadDatabase( Database );
>> > > > > > > > >> AB.ActiveDocument.Name <http://ab.activedocument.name/> =
>> > "EURUSD";
>> > > > > > > > >> AA.LoadFormula( Formula );
>> > > > > > > > >> AA.LoadSettings( Settings);
>> > > > > > > > >> AA.ApplyTo = 1;
>> > > > > > > > >> AA.RangeMode = 3;
>> > > > > > > > >> AA.RangeFromDate = FromDateStr; // * ERROR *
>> > > > > > > > >> AA.RangeToDate = ToDateStr;
>> > > > > > > > >> AA.Optimize( 0 );
>> > > > > > > > >>
>> > > > > > > > >> AA.Export ( "F:\\TestReport1.html" );
>> > > > > > > > >>
>> > > > > > > > >> %>
>> > > > > > > > >>
>> > > > > > > > >
>> > > > > > > > >
>> > > > > > > > >
>> > > > > > > > >
>> > > > > > > > > ------------------------------------
>> > > > > > > > >
>> > > > > > > > > **** IMPORTANT PLEASE READ ****
>> > > > > > > > > This group is for the discussion between users only.
>> > > > > > > > > This is *NOT* technical support channel.
>> > > > > > > > >
>> > > > > > > > > TO GET TECHNICAL SUPPORT send an e-mail directly to
>> > > > > > > > > SUPPORT {at} amibroker.com
>> > > > > > > > >
>> > > > > > > > > TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
>> > > > > > > > > http://www.amibroker.com/feedback/
>> > > > > > > > > (submissions sent via other channels won't be considered)
>> > > > > > > > >
>> > > > > > > > > For NEW RELEASE ANNOUNCEMENTS and other news always check
>> > > DEVLOG:
>> > > > > > > > > http://www.amibroker.com/devlog/
>> > > > > > > > >
>> > > > > > > > > Yahoo! Groups Links
>> > > > > > > > >
>> > > > > > > > >
>> > > > > > > > >
>> > > > > > > >
>> > > > > > >
>> > > > > >
>> > > > >
>> > > >
>> > >
>> >
>> >
>> >
>> >
>> >
>>
>
>
>
>
> ------------------------------------
>
> **** IMPORTANT PLEASE READ ****
> This group is for the discussion between users only.
> This is *NOT* technical support channel.
>
> TO GET TECHNICAL SUPPORT send an e-mail directly to
> SUPPORT {at} amibroker.com
>
> TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
> http://www.amibroker.com/feedback/
> (submissions sent via other channels won't be considered)
>
> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> http://www.amibroker.com/devlog/
>
> Yahoo! Groups Links
>
>
>
------------------------------------
**** IMPORTANT PLEASE READ ****
This group is for the discussion between users only.
This is *NOT* technical support channel.
TO GET TECHNICAL SUPPORT send an e-mail directly to
SUPPORT {at} amibroker.com
TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
http://www.amibroker.com/feedback/
(submissions sent via other channels won't be considered)
For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
http://www.amibroker.com/devlog/
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