Ubuntu 11.10 Problems
lazarus / 32-Linux

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LA.Center · 2011-10-16 18:02

Lazarus and any Laz created app does not work with Ubuntu 11.10, the
problem is, the mouse seems not be able to click on forms, editor,
edit, memo etc to set focus.

The only way currently you can use Laz and Laz created apps without
any problems on Ubuntu 11.10 is

1. Remove Taskbar Menu
http://www.addictivetips.com/ubuntu-linux-tips/how-to-disable-global-
menu-in-ubuntu-11-10-tip/

2. Remove new scrollbar
http://www.addictivetips.com/ubuntu-linux-tips/how-to-get-classic-
scrollbar-back-in-ubuntu-11-04-tip/

I will have a look at the source and maybe we can come up with a fix
asap.

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cpalx · 2011-10-23 16:02

thanks a lot... you save my life :p

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LA.Center · 2011-10-24 10:35

cheers man, they should make Taskbar Menu and Scrollbar thingy
optional during default installation if you ask me.

I looked at the source and the menu handle is attaching to a timer of
ubuntu that looks for where the mouse is, I guess they are tracing the
mouse to show/hide the menu, but the problem is once the laz/lazapp
menu handle gets hooked to this menu handle, itself does not receive
mouse interrupts anymore.

I am guessing we can fix that very easily by simply adding a Capture
interrupt to the TMouse class, or even create a fake handle so that
ubuntu can not hook to your app.

I am kind a bit lost in the code, but we'll get there

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yuriy_sydorov · 2011-10-28 10:11

Any thoughts how to force to use old scrollbars from the app code?
I know about the LIBOVERLAY_SCROLLBAR=0 workaround, but it is needed
to force users to do something.

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motaz · 2012-04-28 04:33

No solution yet for this problem? expect by removing scroll bars.
This problem will hurt most of Lazarus-Linux applications

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zeljko · 2012-04-28 15:34

Solution for liboverlay is already commited in trunk (few days ago by
Mattias).
There's still problem with mouse capture inside TCustomControl (it can
lock whole application, but I think that Mattias maded workaround for
that too). You should svn  update to trunk and then test.

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motaz · 2012-04-29 07:26

SVN for version 0.99 or version 1

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BigChimp · 2012-04-29 07:41

Trunk means the newest version.
http://svn.freepascal.org/svn/lazarus/trunk

The version for 1.0 has already been branched off this... and is only
getting fixes backported.

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motaz · 2012-05-01 05:35

Ok, thanks very much, I'll check it

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Ocye · 2012-05-06 11:53

It's still an issue with 12.4.

Lazarus 1.1 r35591 FPC 2.6.0 x86_64-linux-qt