Default cursor for control doesn't work
lazarus / 32-Linux

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Ocye · 2012-05-02 08:35

I have a panel with a small side area of 3px where the cursor is
changed to crSizeNW/SW etc. (it's a resizeable panel). On the panel is
a control, ie. listbox or glcontext. The embedded control has
crDefault property. When I move the cursor with the right speed it
isn't changed to default pointer sometimes. I tried with OnMouseLeave
code for the panel but that didn't help. When I replace the cursor of
the embedded control with something else like crCross it runs
perfectly. What can I do?
The problem does not occur under Windows.

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zeljko · 2012-05-02 10:16

Qt or gtk2 ?

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Ocye · 2012-05-02 11:01

Gtk2. I'll check Qt this evening.

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Ocye · 2012-05-02 17:08

No problem with Qt. Openglcontext not tested since it isn't supported.

PS: I put some controls together and it is an issue with Qt too. To
reproduce place a panel on a form and change cursor to crHourGlass.
Add a listview to the panel and make it alClient. The cursor will
change when moving over the bevel but stays an hourglass at the
listview which cursor property is crDefault.

PPS: Arch Linux, KDE 4.8.2

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zeljko · 2012-05-03 05:43

That's because qt changes cursor for parent (TPanel) and then to all
of it's children all the time.

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Ocye · 2012-05-03 11:05

Is it good to link cursor to parent? I don't think so but I should
blame Qt for that. Or XOrg?

The question remains: How do I use the proper default cursor for
embedded controls?