[Lazarus] Order of events: TEdit / TListBox

[zeljko]

On 05/23/2017 03:27 PM, kapibara via Lazarus wrote:
> On 05/23/2017 09:18 AM, zeljko wrote:
>> It's normal. If you click onto listbox (OnMouseDown of listbox
>> triggers), TEdit looses focus and triggers OnExit()
>>
>
> Thanks for the reply.
>
> Yes, on Windows, Lazarus and Delphi 7 behave the same. Except that
> Delphi 7 doesn't have the ListBox.SelectionChange event:
>
> Lazarus Win platform: Edit.Exit always fires before ListBox.OnClick (and
> OnSelectionChange), no matter if the ListBox item is selected or not.
> Good. Though I would not expect SelectionChange to fired since there is
> no change in selection?
>
> Problem is with Lazarus Linux GTK2. Events behave the *opposite* to
> Windows Lazarus and Delphi 7:
>
> 1) SelectionChange does not fire when clicking an already selected item.
> I might be wrong, but thats good I think and the windows implementation
> bad?
> 2) Edit.Exit fires BEFORE ListBox.OnClick if selecting and already
> selected ListBox item. Good.
> 3) Edit.Exit fires AFTER ListBox.SelectionChange and ListBox.OnClick if
> selecting a different ListBox item than the currently selected one. Bad.
>
> So the behaviour is inconsistent between platforms, and also
> inconsistent within the same control (TListBox) depending on what item
> is selected.


Please open an issue about it and I'll take a look on it.

zeljko