On 9/22/23 15:26, Mattias Gaertner via lazarus wrote:
The gtk has such default position. It should be possible to support poDefault there.
From a quick look in the Gtk2 widgetset code, the position could be set (or actually, not set for poDefault and poDefaultPosOnly) via SetWindowSizeAndPosition *however* because this is called both during form creation and to make the form visible, somehow it needs to only be done the first time (after creation) since after that the program should be able to change the position programmatically and a call to Hide followed by a call to Show should place the window at the last position set programmatically instead of ignoring the bounds properties (which is what it should do for the first time based on the Position property's value).
I didn't make a thorough search but i couldn't find where the size is set as even commenting out all the code in SetWindowSizeAndPosition as well as setting some random values for the allocation during creation the form still seems to be set at the design-time size. LCL seems to try very hard to ensure the size and position are set :-P.
(actually in general it seems to try hard to override what the window manager does - sometimes i have an issue with Window Maker where Lazarus somehow brings all of its windows above other windows when alt-tabbing away to another program... i haven't figured out why that happens though as it hasn't crossed yet my "too much annoyance" threshold to investigate :-P)
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