[Lazarus] Main form resize events

Mattias Gaertner nc-gaertnma at netcologne.de
Mon Sep 13 18:27:44 CEST 2010

On Mon, 13 Sep 2010 09:54:45 +0000
Mark Morgan Lloyd <markMLl.lazarus at telemetry.co.uk> wrote:

> I've got a form containing main menu, status lines top and bottom, and a 
> couple of grids. I've been doing other things for a few days but I now 
> seem to have a problem where resizing the form (diagonal mouse-drag on 
> bottom-right corner) does not correctly resize/reposition all of the 
> content.
> Running on x86 Linux (Debian) and looking at the app built with 
> different versions of Lazarus, each with its own LCL and preferred FPC 
> version, and for either GTK1 or GTK2:
> With (27343) for GTK, neither status line changes when the form 
> is resized, one of the grids which is left-aligned also stays unchanged 
> with part of the bottom status line visible below it.
> With (27343) for GTK2, performance is erratic. The bottom 
> status line sometimes changes correctly, but the width of the top line 
> and its panes is always unchanged.
> With 0.9.29 (27343) for both GTK and GTK2, attempting to resize the form 
> sometimes results in it "snapping back" to the original size or 
> sometimes to something intermediate; I suspect that this might be a DPI 
> issue since I'm working over VNC and the setting of the two X servers 
> might not be the same. Positioning of the status lines etc. appears to 
> be correct.
> For completeness, (25955) and (27246) appear to behave 
> as 0.9.28. However I think that I've seen all of those working properly 
> in the past, although details such as the resizing of panes within a 
> status line might have been erratic.

The layout algorithm was rewritten in 0.9.29 to support complex layouts.
Please create a bug report with an example.



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