Op 2010-06-04 02:02, Dimitri Smits het geskryf: > > Parent and Owner are what they say they are. Owner: the TComponent that > "owns" the TComponent-descendant. In other words, that is responsible > for the lifecycle of that instance. Parent: the control on which the > control is visualised.
I know what they are and what each does. I'm simply saying you don't need to properties for that. A Parent can just as easily manage the lifespan of it's chidren as the Owner can. We have listed many such examples in LCL and VCL already. fpGUI proves this too. > It is not because by default the LCL or VCL don't keep those in sync in > most cases, that it is redundant. I've seen plenty in my 10+ Delphi The most common example normally thrown at me is that docking will not work if Owner and Parent is always the same. Well, they are wrong. A rudementy docking implementation using fpGUI once again works just fine (under Linux and Windows). You simply reparent - which also transfers the ownership (lifespan control) to the new parent/container component. > I then conclude from your case above, Graeme, that fpgui does not work > with containers like TPanel/TGroupbox/... and does not allow to "inject" > extra visual controls on another form? And there you are wrong. fpGUI supports all that. But now this message thread is getting off-topic. My question wasn't about Parent or Owner, it was why doesn't TWriter output the whole hierarchy of components when I give it the top level parent (a Form). I think I got my answer, but that simply raised the point that it's a stupid design (that's how I see it at least). But as with most things I suggest, it will not be changed, even if it is a flawed design. Borland and Embarcadero jumps off the cliff - FPC must now also jump off the cliff. :) Regards, - Graeme - -- fpGUI Toolkit - a cross-platform GUI toolkit using Free Pascal http://opensoft.homeip.net/fpgui/ _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
