[Lazarus] Sciter for Lazarus: VCL Handle vs. LCL Handle

Marcos Douglas B. Santos md at delfire.net
Wed Jun 14 12:43:38 CEST 2023

On Wed, Jun 14, 2023 at 6:47 AM Michael Van Canneyt via lazarus
<lazarus at lists.lazarus-ide.org> wrote:
> On Tue, 13 Jun 2023, Marcos Douglas B. Santos via lazarus wrote:
> > Hi,
> > I'm trying to run Sciter.TIS https://sciter.com/download/ on Lazarus, which could be an open source project in the future — yes,
> > not the newer version (named Sciter.JS) as I don't need these new features.
> >
> > I've started looking into https://github.com/da-baranov/SciDe (~8 years ago). Then, I discovered a fork
> > https://github.com/Mikanoshi/SciDe (~5 years old) and forked from it because it is "newer".
> >
> > The da-baranov's original repository already tried to run on Lazarus, but they have an issue which couldn't be solved:
> > https://github.com/da-baranov/SciDe/issues/3#issuecomment-87698772
> If you look at the issue, you see there is a commit that claims to solve
> this issue. Did you test if that commit is incorporated in your code ?

Yes, it is incorporated. First I checked it, but later forked the
repository from the author of this commit (mr. Mikanoshi), which is
But it didn't work.

> > I have the same issue, even using the newer version...
> > When it calls API.SciterWindowAttachEventHandler() here
> > https://github.com/Mikanoshi/SciDe/blob/master/source/Sciter.pas#L1439-L1440, the result is always SCDOM_INVALID_HWND.
> >
> > Why am I asking this here? Well, the project claims that it works from Delphi 7 to newer; they could compile on Lazarus; I also
> > could compile (creating a package, a component, etc) on Lazarus; but it do not work because something looks like different about
> > how a Handle works on VCL comparing to LCL.
> On windows, the handle should work the same. If you're working on another
> platform, then it works very different, and then you'll need to see what sciter
> actually expects.

I would like it to work on Windows, Linux and MacOS, but for now I
will be glad that it only works on Windows.

Marcos Douglas

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