[Lazarus] animated splash screen for lengthy operation, works with windows, doesn't with linux

[Luca Olivetti]

El 27/3/23 a les 10:34, Luca Olivetti via lazarus ha escrit:
> El 27/3/23 a les 10:13, Jean SUZINEAU via lazarus ha escrit:
>>
>> Le 27/03/2023 à 09:46, Luca Olivetti via lazarus a écrit :
>>> procedure TUpdateThread.Execute;
>>> begin
>>>   while not Terminated do
>>>   begin
>>>     FWaitForm.ShowProgress;
>>>     Sleep(30);
>>>   end;
>>> end;
>>
>> Usually I use TThread.Synchronize to ensure that the graphic code is 
>> run by the main thread.
>>
>> But it won't work if your main thread is blocking.
> 
> Exactly
> 
>>
>> May be you should do the inverse move the lengthy operation to a 
>> separate thread and keep the main thread for the splash screen ?
> 
> Yes, I usually do that, but in this case it's not possible (the lengthy 
> operation is just a  TSQLQuery.open that I cannot delegate to a 
> different thread).

Sorry, in this project I'm using zeos, so it's TZQuery.open.


Bye
-- 
Luca Olivetti
Wetron Automation Technology http://www.wetron.es/
Tel. +34 93 5883004 (Ext.3010)  Fax +34 93 5883007