On Wed, 2 Feb 2011, Mattias Gaertner wrote:
[email protected] hat am 2. Februar 2011 um 11:49 geschrieben:
On Wed, 2 Feb 2011, Paul Ishenin wrote:
Hello, Lazarus mailing list.
I've changed the behavior of TCustomForm.Create constructor. Now it raises
an
exception if your TCustomForm descendant has no resource.
The behavior is controlled by a global variable *RequireDerivedFormResource*
which is set to True for all new applications created by the IDE and is set
to False by default. If you for some reason want the old behavior just
remove
"RequireDerivedFormResource := True" line from .lpr file of your new
application.
I think you should do the opposite: The default should be 'True', and users
should disable this explicitly.
This would break existing projects without need.
I did some tests. For a TDatamodule descendant, TMyDataModule.Create(Nil)
gives an error if there is no resource. For a form, the form remains empty.
I knew about the former, and had assumed the form would react the same as
TDataModule.
It does not, apparently.
That would also be Delphi compatible.
That's why it is enabled for new projects. Don't forget this is just a warning
that something might be missing. It is not a necessary bug fix.
Indeed.
There is one caveat: The TForm class itself should not search for a resource,
only TForm Descendants should do this.
Huh?
That was always so.
I was just remarking on the possibility, in case it was missed.
Michael.
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