On Fri, 11 May 2007 11:03:16 -0600 "Seth Grover" <[EMAIL PROTECTED]> wrote:
> A month ago I reported a LCL bug causing a crash in GTK. > > http://freepascal.org/mantis/view.php?id=8610 > > Since it hadn't been looked at by any of the developers yet, I wanted > to try to see if I could figure out if there was some obvious problem. > > I can tell the bug is in SendSizeNotificationToLCL from the stack > trace, but I don't know how to actually debug down into the lcl code. > The last place the debugger lets me debug down to is the > gtk_notebook_insert_page_menu call in TGtkWSCustomNotebook.AddPage. > > Can anyone with more experience coding the LCL tell me how to actually > be able to debug down into the code I need to look at, or (even > better), take a look at fixing this bug? I tested the example given in the bug report. With gtk2 I get a different error: (project1:28153): Gtk-CRITICAL **: gtk_widget_realize: assertion `GTK_WIDGET_ANCHORED (widget) || GTK_IS_INVISIBLE (widget)' failed ERROR in LCL: TGtkWidgetSet.CreateDCForWidget: Unable to realize GdkWindow and a long stack trace. The reason is, that TOvcVirtualListBox is trying to get the Canvas.TextHeight during creation, before the widget is associated with a screen - before the LCL has added the notebook page handle to the notebook handle. Possible solution: a) Improve TNoteBook to create/add the page handle in one step. b) Change TOvcVirtualListBox to init later. Mattias _________________________________________________________________ To unsubscribe: mail [EMAIL PROTECTED] with "unsubscribe" as the Subject archives at http://www.lazarus.freepascal.org/mailarchives
