Perhaps you have a difference base of code between the running app and the
one you are plugging in with. Run-time packages ensures that you are using
consistent code between the modules compiled separately.

Jason Wharton
CPS - Mesa AZ
http://www.ibobjects.com

----- Original Message -----
From: "John Tomaselli" <jrt@...>
To: <IBObjects@yahoogroups.com>
Sent: Monday, June 25, 2001 1:40 PM
Subject: RE: [IBO] Plugins


> Jason,
> I'm not quite sure why creating run-time packages (which I thought was
> mainly for distribution options) will fix the problem. Also I forgot to
> mention that our testing worked fine with a BDE example. The Following IBO
> code is what gets tripped eventhough I test the Dataset as TIB_Dataset
> before I set it. For some reason the typecast occurs here.
>
> function TIB_DataSource.GetDataset: TIB_Dataset;
> begin
> Result := FStatement as TIB_Dataset;
> end;
>
> John
>
>
> -----Original Message-----
> From: Jason Wharton [mailto:jwharton@...]
> Sent: Monday, June 25, 2001 3:36 PM
> To: IBObjects@yahoogroups.com
> Subject: Re: [IBO] Plugins
>
>
> I think the only way this will work is if you are using run-time packages.
> Then, each module is getting and using objects created in the same
context.
>
> Jason Wharton
> CPS - Mesa AZ
> http://www.ibobjects.com
>
>
> ----- Original Message -----
> From: "John Tomaselli" <jrt@...>
> To: <IBObjects@yahoogroups.com>
> Sent: Monday, June 25, 2001 12:37 PM
> Subject: RE: [IBO] Plugins
>
>
> > Hi Jason,
> > We are in the middle of creating a Demo App for smartPlugin from
Athrasoft
> > http://athrasoft.cjb.net/ ). When Finished we will put then demo
project
> on
> > both web sites for this very impressive product and hopefully save lots
of
> > time for the next IBOite who would like to use it.
> > Mostly things have gone very well;
> > Able to share database connections from Host with the Plugins.
> > Able to pass along tib_query and Datasources from Host to Plugin (needed
> for
> > Legacy applications)
> > The problem occurs when I try to use these objects as a datasource.
> > i.e.
> >
> > Params is a variable list passed from Host to Plugin in the following
> line.
> > with Manager.LoadPlugin (True, PinName + '.spi',
> > dm1.ib_query1,dm1.ib_datasource15], @Pin) do
> >
> > The plugin picks them off in the following manner.
> > TObject(Fdataset) := Var2Obj(Params[0]); { Fdataset: TIB_BDataset; }
> > TObject(dsHostPass) := Var2Obj(Params[1]); {dsHostPass:
TIB_DataSource;}
> >
> > The following code works fine when programattically using the dataset.
> > Fdataset.bufferfirst;
> > frmMDI_1.edit3.text :=
> Fdataset.bufferfieldbyname('Description').asstring;
> > // works!
> >
> >
> > I would like to assign a datasource with the passed along object so I
> could
> > have a grid display the results. The following code gives an invalid
> > typecast error. I have tried serveral different methods all with the
same
> > results.
> >
> > IB_DataSource2.dataset:= Fdataset; // blows up
> >
> > Is this possible?
> > TIA
> > John
> >
> >
> >
> >
> >
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> >
> >
>
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>