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Date Posted: 21:37:56 06/08/00 Thu
Author: Michel
Subject: Re: Envision Components
In reply to: Homer 's message, "Re: Envision Components" on 00:20:20 06/07/00 Wed

I will consider creating "wrapper" components to get the best of "both" worlds. From my experience I really prefer creating non-visual components are run-time and not in forms. By dropping things on a form, it not only consumes more memory, but also increased the size of the EXE, and increases the time it takes to load forms.

I am working on a large Delphi project (more than 500000 lines of code) and have migrated from Delphi 1 to 4. With DFM files there can be problems across delphi versions, especially if you need to go back to a version. When components are created at run time, the migration is much smoother, as there are not any design time dependencies.

Best regards,

> I agree with your memory conservation philosophy,
> however components don't really assure a memory
> thrifty program. After all, one can .Create virually
> any component at runtime. The availability of
> components make it easier for prototyping. Not only
> that, they help programmers who are unfamiliar with a
> complex topic (like imaging) to become familiar. Look
> at the plethora of components available to VB
> programmers, then look at their numbers, and the
> popularity of VB. I for one, vote for components if
> for no other reason than it might bring us a few more
> Delphi users which helps assure the life of the
> product we all love.
> >
> > Hi Shane,
> >
> > As Bill mentionned there is only one component. This
> > is on purpose. I may later add components which will
> > wrap the functionality of the objects, such as
> > TDibGraphicPrinter, TScanner, and the transform
> > classes.
> >
> > I think that creating objects when you need them and
> > deleting them when they are no longer in use,
> > encourages good programming. There is a section in
> the
> > help file called "RAD Abuse ?" which explains my
> > thoughts on this.
> >
> > Best regards,
> >
> > Michel
> >
> >
> >
> > > I have gotten the Envision package installed into C
> > > Builder 5! Where are all the components for the
> > > package? All I see is ImageScrollBox. Where are all
> > > the other components (Scanning / Printing /
> > > manipulation)?? I was figuring there would be
> > > TEnvisionImage component at least.
> > >
> > > Thanks,
> > >
> > > Shane

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