[Lazarus] Gtk3 high resolution issues on Linux

[Juha Manninen]

On Mon, Dec 9, 2019 at 7:48 PM Ryan Joseph via lazarus
<lazarus at lists.lazarus-ide.org> wrote:
> no problems on gtk2. Is this a known issue on gtk3? I'm just starting from a basic application
> with a form and single button. The window size and the button size is wrong.

LCL-GTK3 is still alpha. I guess it is just not implemented yet.
LCL-GTK2 can be studied for inspiration but direct copy-paste may not
work and it is a bad idea anyways. The code has left-overs from the
original GTK1 history.
LCL-GTK3 is a new clean implementation with some new design principals.
Sorry I cannot help you more. The author Zeljko should be able to
answer detailed questions.

Juha