[Lazarus] RE : Forms in DLL

[Juan Sánchez]

I have tried it. From main program, one button call a procedure in a DLL
with a form. Inside this procedure I code this:

Application.Initialize;
Application.CreateForm(TForm2, Form2);
Form2.ShowModal();
Is this Ok?

What I can see is that main window in programa never is blocked so I can
access both modal and main window. If I click twice button to get two modal
windows from DLL, both are modal and now I can access last window created
and main window.


2011/8/8 Ludo Brands <ludo.brands at free.fr>

> **
>
>
> I know that some people asked about this before. But it isn't clear enough
> for me :-) So. Is it possible to include forms or other lcl graphic
> component in a DLL so, for example, a DLL function can create or modify a
> form?
> If it is not possible... There any initiative or way to try to participate
> and code it to get it?
>
>
> Generally speaking, no. The LCL in the dll comes with it's own messagepump
> and you can have only one per process. What works for me: a modal form
> created in a dll. Modal forms are kind of "exclusive" for the process and
> having 2 message pumps isn't a problem. There is an issue when the dll is
> called from MFC. Details and workaround here:
> http://bugs.freepascal.org/view.php?id=19327.
> OSX requires the patch attached to
> http://bugs.freepascal.org/view.php?id=19253.
>
> Ludo
>
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