David Millington

4 bytes does fit into a register in both and is okay. It is params of 5, 6, 7, and 8 bytes in size that prompted this work: that is, params that may or may not fit into a register depending on if the register is 4 bytes or 8 bytes in size. I updated to make that clearer. Glad you find it interesting! For VC compatibility: for cdecl and stdcall, possibly. We had a very comprehensive review of all calling conventions on all platforms. Other compatibility areas with VC can be very different areas, things like object file format or RTL or...

We made some changes to the low-level method call ABI in 10.3, which affects both Delphi and C++. This is likely to be invisible to you unless you do something very low-level. It's more visible to you if you use C++, because now an entire class of bugs has been fixed in one go. IMO, whether you use C++ or not, it's very interesting! Info here: https://community.idera.com/developer-tools/b/blog/posts/abi-changes-in-rad-studio-10-3

Hi @swierzbicki, Did you install with the ISO installer, or the GetIt installer? I'm not certain from the name "swierzbicki" who's behind the account :) Were you on the beta and did you install any beta builds on this same machine? Cheers, David

More info here: http://community.idera.com/developer-tools/b/blog/posts/new-in-rad-studio-10-3-options-dialog-improvements

For the DFM editor, you're looking for the module's current active editor (have a look at IOTAModule) and from that you can tell what it is, eg the DFM, and should be able to tell if it's a form or form-as-text editor.

This one should be fixed in 10.3. In terms of theme breaking - that bug isn't seen in 10.3, but it's the first time I've heard of it in 10.2.3 either. Is there a bug report?

@Attila Kovacs I look after the IDE, so it is "my work" in that sense, but credit really needs to go to our very hard-working developer, and the UX designer I worked with to create the new look. @Lars Fosdal + vs > is a stylistic choice, since > seems to be more common today.

We use it internally, daily, and so it's had a lot of revision over time as we made changes. While nothing is ever perfect, I can tell you I love using it much more than 10.2.3 - it's is just nicer. The animated videos on the blog should give you an idea of what using it is like, I hope. If you have requests about other areas, let me know. There are two more blog posts in the UX series planned, on other areas in the IDE.