On 10/19/15, Martin Grajcar <[email protected]> wrote: > On Mon, Aug 24, 2015 at 4:43 PM, Mattias Gaertner > <[email protected] >> wrote: > >> On Mon, 24 Aug 2015 16:29:49 +0200 >> Martin Grajcar <[email protected]> wrote: >> >> > In code I'm working on, I've found a pattern like >> > >> > PROCEDURE HideIt; >> > BEGIN >> > SomeComponent.Visible := FALSE; >> > SomeComponent.Parent := SELF; >> > SomeComponent.Visible := TRUE; >> > END; >> > >> > PROCEDURE ShowIt(NewParent: TForm); >> > BEGIN >> > SomeComponent.Visible := FALSE; >> > SomeComponent.Parent := NewParent; >> > ...some more stuff... >> > SomeComponent.Visible := TRUE; >> > ...some more stuff... >> > END; >> > >> > I can't really see what it's good for. I guess, the idea was to >> > preserve >> > the widget, but the widget seems to get freed immediately in the first >> > line. It comes from D7 or older. Does it make sense on Lazarus 1.4 >> > using >> > GTK+? >> >> No. >> Simply do "SomeComponent.Parent := NewParent;". >> > > Thank you for the information! Simplifying helped to get rid of a crash on > Linux > http://bugs.freepascal.org/view.php?id=28840 > but there's still an event-related problem on Mac. Could someone tell me > more about what problem may get solved by using the more complicated stuff? > > Martin. >
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