[Lazarus] fpGUI

[Michael Schnell]

On 01/12/2011 05:14 PM, Henry Vermaak wrote:
>
> I just tested again here, and using postmessage with gtk2 from an 
> external thread (from a library) works perfectly.
As taken from some example code, I just created a user thread with 
TMyThread.create(). It does run and does

   while not Terminated do begin
      sleep(2000);
      PostMessage(Handle,  LM_MY_MESSAGE, 2, 0);
   end;

in TFom1 I have:

     procedure MyThreadMessage(var MyMessage: TMyMessage); 
message(LM_MY_MESSAGE);

and

procedure TForm1.MyThreadMessage(var MyMessage: TMyMessage);
begin
   Memo1.Lines.Add('MyMessage' + InttoStr(MyI));
end;

MyThreadMessage is never called, even though the hread is verified to 
call PostMessage.

What am I doing wrong ?

> Have you built your project with -dusecthreads?

Not really. As I did not find where to set this, I deleted the 
appropriate $ifdef in the project source code. Could this be a problem ? 
(How to define the -dusecthreads in the Lazarus IDE ?)

Thanks for your answers,
-Michael