Lazaru 4.0: Docked Form Editor problem with frames
lazarus / 10-Designer

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luca · 2025-05-12 12:03

Hi,
I'm trying the new version of Lazarus.
I enabled form docking; I opened a project that uses a lot of TFrame.
If I open a Unit file of a TFrame the Form view doesn't show the
component into the frame: just an empty rectangle appears.
The Anchors tab includes all the components as  the object inspector
tree.

Best regards
Luca

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luca · 2025-05-12 15:19

Hi,
by checking the lfm file, I found the property  DesignLeft and
DesignTop with some negative values.

I found it depends by the position of the designer of the form in a
multi monitor situation.
Using undocking IDE if I move the form (during design phase) on the
monitor on the left the value is negative. So I think in the docking
form IDE this two values must be not considered.

Luca

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Martin_fr · 2025-05-12 15:30

Then it is probably the same as the known issue with TForm Left/Top =>
if they are negative then the docked form editor does not work
(positive value are ok).

There is an issue report about it. But fixing it won't be simple. It
likely needs changes deep in the LCL or even Widgetsets...

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n7800 · 2025-05-13 03:37

Quote from: Martin_fr on May 12, 2025, 05:30:38 pmThere is an issue
report about it.

https://gitlab.com/freepascal.org/lazarus/lazarus/-/issues/40491

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Hansvb · 2025-06-05 10:03

Ah.. i missed that. Thanks.