JuuS wrote:
Excellent research, I see you've tracked this issue for a long time.
Not so much that, but my colleagues and I have a fairly wide range of OS versions etc. and there are one or two programs that I really do want to run on just about anything (e.g. one that handles cut-and-paste over the LAN).
I've also written a very small amount of stuff that potentially I want to be able to send to anybody with confidence that any version of Lazarus will be able to read the forms and any version of FPC will be able to compile it. In most cases that's doable, provided that one's careful about exactly what gets put into svn.
In addition to form (.lfm etc.) compatibility, there's a couple of "gotchas" that's deserve comment. The first is that TNotebook (and related components) got a major workover somewhere around Lazarus 1.0, in general problems can be sorted by RTTI etc. It's worth noting as a related issue that the introduction of frames required a compiler facility that for a long time was only in a development version: if you put frames in a notebook, you'll have problems supporting really old versions.
The second is that SynEdit got some internal changes, and if you want to do anything that involves reaching below the surface I think you have to use compile-time conditionals rather than RTTI. That's one reason that I did the work to find out what compiler versions worked with which LCLs, expect problems around 0.9.28.
-- Mark Morgan Lloyd markMLl .AT. telemetry.co .DOT. uk [Opinions above are the author's, not those of his employers or colleagues] -- _______________________________________________ Lazarus mailing list [email protected] http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
